97results about How to "Reduce transfer resistance" patented technology

The invention relates to a low-resistance and high-strength ion exchange membrane for the chlor-alkali industry and a preparation method of the low-resistance and high-strength ion exchange membrane. The low-resistance and high-strength ion exchange membrane is a multi-layer composite membrane comprising a perfluorosulfonic ion exchange resin layer, a perfluoropropionate ion exchange resin layer, reinforced screen cloth and gas release coatings, wherein the perfluorosulfonic ion exchange resin layer with the thickness of 80-150 micrometers and the perfluoropropionate ion exchange resin layer with the thickness of 8-12 micrometers form a perfluorosulfonic ion exchange resin base membrane, the gas release coatings with 3-12 micrometers are arranged on two outer side surfaces of the base membrane, the reinforced screen cloth is arranged in the perfluorosulfonic ion exchange resin layer, and the perfluorosulfonic ion exchange resin layer is also internally provided with a nano pore and a nano cavity. The low-resistance and high-strength ion exchange membrane can be prepared through a melt co-extruding or multi-layer hot-pressing compounding process, can be used in an ion exchange membrane in the chlor-alkali industry, and has good mechanical property and electrochemical performance.

The invention relates to a granular anti-hardening acid-base dual-purpose ternary micro-electrolysis filler and a preparation method thereof. The grain size of the filler ranges from 1mm to 5mm, and iron powder, aluminium powder and graphite powder are mixed in a mass ratio of (2-6):(2-6):1 to perform granulation and then are sintered by being isolated from air, thus obtaining the filler. The micro-electrolysis filler is applicable to micro electronic treatment on acid sewage or base sewage. According to the invention, the efficiency of micro electrolysis on the sewage is high, a filling areais not easy to harden, and the period of back flushing is long. When the ternary micro-electrolysis filler is used for treating the sewage, CODcr (chemical oxygen demand) of the sewage can be reducedefficiently in a short time, and the biochemistry of the sewage can be improved. According to the invention, the raw materials are easy to obtain, the preparation process is simple, the problem of filler hardening of the conventional micro-electrolysis technology is solved, and the filler is applicable to treatment on the base sewage.

The invention relates to a fiber-reinforced perfluorinated ion exchange membrane containing a non-continuous nano-pore canal and a preparation method thereof. A basic membrane of the membrane comprises a perfluorosulfonic acid ion exchange resin layer and a perfluorocarboxylic acid ion exchange resin layer, reinforcing fiber mesh cloth is arranged in the perfluorosulfonic acid resin layer, and gas release coatings are sprayed on the surfaces on the two outer sides of the basic membrane; and the fiber-reinforced perfluorinated ion exchange membrane is characterized in that the non-continuous nano-pore canal is further contained in the perfluorosulfonic acid resin layer. The membrane is prepared through a melting co-extrusion or multi-layer hot-pressing compounding process. The membrane is used for the ion exchange membrane in the chlor-alkali industry and has better mechanical properties and electrochemical properties.

The invention relates to the technical field of lithium ion batteries, in particular to lithium ion battery electrolyte and a lithium ion battery using same; the electrolyte is prepared from lithium salt, a non-aqueous organic solvent and an additive, wherein the additive is prepared from fluoroethylene carbonate, nitrile compounds and a compound with a structure as shown in formula I; R1, R2, R3, R4 and R5 in the formula I are separately selected from hydrogen, an amide group and alkyl or alkoxy with a carbon number being 1-3; R1, R2, R3, R4 and R5 at least contain one amide group. Compared with the prior art, the lithium ion battery electrolyte is excellent in wetting effect and excellent in fast charge performance under a high-voltage condition by virtue of a synergistic effect generated by the fluoroethylene carbonate, the nitrile compounds and an amide pyridine compound with a structure as shown in formula I; moreover, the lithium ion battery electrolyte has the comprehensive performance of a long cycle life and a low high-temperature storage expansion rate.

The invention discloses a coal gas methanation catalyst and a preparation method thereof, wherein the catalyst comprises the following compositions in percentage by weight: 12-25 percent of NiO, 0-9 percent of La2O3 and the balance of Al2O3, wherein the NiO and the La2O3 are carried on gama-Al2O3 carriers in dual-mesoporous distribution. The invention has the following advantages: the catalyst carriers in dual-mesoporous distribution can reduce transfer resistance and be beneficial to dispersion of reactants and products, and is not easy to generate accumulated carbon. In the invention, the catalyst is added with assistant La, thus being capable of restricting the generation of nickel aluminium spinel NiAl2O4, leading the size of nickel crystal grains to be refined, increasing the dispersion degree of Ni and being beneficial to improvement of activity and stability of the catalyst. The catalyst is applicable to operation at high air speed, thus having higher material handling capability.

The invention provides preparation of a graphene polyaniline modified carbon cloth electrode material, and a method for accelerating the acclimation of a bio-anode, and relates to electrode preparation and bio-anode acclimation. A purpose of the present invention is to solve the technical problem of poor electron transfer efficiency of existing bioelectrochemical anode. The graphene polyaniline modified carbon cloth electrode material preparation method comprises: loading graphene oxide onto a carbon cloth, immersing into a sodium borohydride solution, reducing, immersing into an aniline monomer solution, adding a curing agent solution in a dropwise manner, and polymerizing to obtain the graphene polyaniline modified carbon cloth electrode material. According to the present invention, with the application of the graphene polyaniline modified carbon cloth electrode material as the anode in the bioelectrochemical system reactor, the operation is performed after the starting until the output potential is stable so as to complete the acclimation; and the graphene polyaniline modified carbon cloth electrode material can be used in wastewater treatment.

The invention relates to a preparation method of nano LiFel-xMxPO4 / C lithium phosphate composite positive pole material. Lithium dihydrogen phosphate, iron powder, an M element source and an organic carbon source are uniformly mixed in a solvent medium, are treated for 2 to 7h through a high-energy ball mill, have chemical reaction under mechanical activation, and a uniformly dispersed precursor is prepared. The precursor is thermally treated for 2 to 10h at 600 to 800 DEG C under atmosphere protection and cooled to be room temperature, and the nano LiFel-xMxPO4 / C lithium phosphate composite positive pole material is prepared. The preparation method has simple and high-efficiency process and the whole process does not produce ammonia, wastewater and other polluting substances, and is applicable to industrial production. The primary particles of the prepared material are nano particles which are uniformly distributed, and the material is characterized by high specific capacity and good rate cycle performance.

Grounding finger for shielding at an electrical connection between a plug connector and a mating plug connector of an electrical line, having a sleeve-like support element which has a first outer edge and a second outer edge, axial connecting webs being provided between the outer edges, and having a plurality of spring limbs which act radially outward and, at least at one end, are connected to one of the edges in order to generate a spring-loaded contact force to the outer plug connector, with some of the connecting webs being interrupted and being formed in each case with at least one contact lug which faces radially inward.

The present invention relates to an energy store device, comprising a plurality of cooling channels (130), which are disposed in a plane spaced apart from each other substantially parallel to each other and designed for a cooling fluid to flow through them, at least one collection box (110, 120), which is disposed in the plane with and substantially perpendicular to the plurality of cooling channels (130) and is connected thereto to take up the cooling fluid therefrom or release it therein, and with a stack composed of a plurality of electrochemical energy store units (310), which are disposed such that between two adjacent cooling channels (130) of the plurality of cooling channels (130) at least one energy store unit (310) from the plurality of electrochemical energy store units (310) is disposed, respectively.

The invention relates to a method of effectively producing 1, 3-propylene glycol by changing the membrane permeability, which adds nonionics to change the membrane permeability, effectively promotes the cell growth, and increases the concentration of 1, 3-propylene glycol which is the finished product of fermentation. The utility model has the technical process that as follows: adding the second-class germ culture into the fermentation culture; adding nonionics which can improve the membrane permeability to the fermentation culture; the nonionics reduce the resistance of the oxygen and nutrient substance from entering the cell, promote the cell growth, enhance the secreting of metabolite to the extra-cellular area, reduce the accumulation of metabolite in cell, and facilitate the elimination of inhibition of product and sub product, in particular the inhibition of cell growth and cell catalytic activity by 1, 3-propylene glycol. The concentration of the fermentation product--1, 3-propylene glycol is increased by 10 to 70 percent. With simple technical process and low production cost, the invention is easy to be industrially applied.

The invention provides a catalyst stuffing and stuffing bed for a seawater desulfurization process. The surface of the catalyst stuffing is coated with a catalyst, and the catalyst stuffing is composed of a three-layered cellular ring structure which comprises (a) a middle cellular ring (100), (b) an upper cellular ring (200) and a lower cellular ring (300) as well as (c) a supporting structure (400) connected with the upper cellular ring (200), the middle cellular ring (100) and the lower cellular ring (300). The catalyst stuffing has a good contacting surface, a relatively low pressure dropand an effect of catalytic oxidation, and can catalytically oxidize the SO2 absorbed in seawater into stable sulfate ions. Sulfite ions are further stabilized into the sulfate ions on the basis of improving the desulfurization efficiency; the oxidation quantity in the later stage of the seawater desulfurization process is reduced, so that an aeration basin and the aeration quantity can be reduced.

The invention discloses a purification method for oilfield reinjection water. According to the method, at least one level of membrane filtration treatment is carried out on oilfield produced water through a cellular carrier type inorganic carbon membrane component so as to prepare the reinjection water suitable for low permeability and extra-low permeability oil reservoirs, wherein the filter precision of the membrane component for membrane filtration treatment is 0.001-100mu m. The purification method has high filtration accuracy, the membrane flux of the compound carbon membrane carrier is large, the capacity of the membrane in resisting oil contamination is strong, the integration level of the structure of the membrane core is high, the quality of the prepared reinjection water is stable, and fine filtrated oilfield reinjection water meets the requirement of the reinjection water for the oil reservoirs in low permeability and extra-low permeability block, and meets the A-grade standard of 'recommended index and analysis method for quality of oil reservoir injection water of clastic rock' (SY / T 5329-94).

The invention discloses a preparing method for a MoS2-CNT multi-level nano-structure electrolysis water hydrogen production material. The method comprises the following steps that firstly, a multi-walled carbon nanotube is subjected to functionalization, the carbon nanotube is subjected to acid oxidation treatment, and the functionalization carbon nanotube is obtained; secondly, MoS2-CNT preparing is conducted, after an alcohol-water mixing solvent and the functionalization carbon nanotube are mixed and dispersed, ammonium molybdate and thiourea are then added for the reaction, and a product is obtained after separating and washing. Through coordinated regulation and control of a multi-level three-dimensional structure and interphase interaction, reasonable construction and comprehensive optimization of a MoS2-CNT electrocatalyst structure are achieved, efficient electro-catalysis hydrogen evolution reaction performance with commercialization prospects is obtained, and a new thought is provided for improving catalytic activity of different kinds of electrocatalysts through the multi-level structure and interphase connection regulation and control strategy.

A biologic method to drying life garbage, it is about a kind of technology to decrease the water of life garbage and biologic stable disposal. Firstly, after sieving out the big block from the life garbage, to stack it into groove-shape compost reactor, then to cover tying straw pad and compound heat insulating coiled material, to bonds the opening rubber tail gas gathering tube with the cooling tube under the coiled material. The cooling tube is connected with gas-liquid separator, centrifugal blast blower B, gas separation unit and centrifugal blast blower A sequentially, and the centrifugal A is connected with the bottom of the reactor. Secondly, to vent the air fitfully and circularly with firm discharge, to turn one time on the second day and the fourth day respectively, to complete drying in six days, offgas enters gas separation unit after liquor condensate is eliminated by the cooling tube and gas-liquid separator, after discharging part of offgas into off-odor unit, to supply equivalent clean air, then to put the offgas into the centrifugal A for garbage venting. The quantity of offgas off odor and running cost of this invention is low, the water-content coefficient of the garbage is smaller than 40% after disposal, and it can be used for drying the life garbage with water-content coefficient 60%.

The invention discloses a phosphorus-containing compound, and a preparation method and an application thereof, and belongs to the fields of material science and technology and chemistry. The phosphorus-containing compound is prepared from cheap raw materials through the simple method; the method is essentially characterized in that the compound is prepared from metal ions and a phosphorus source under the illumination condition of a photoactive material; and the temperature in the prior art is more than 100 DEG C, and the method in the invention is a normal temperature synthesis process, so the obtained compound has a weak crystallization degree. The phosphorus-containing compound has a high photocatalytic activity as a conventional catalyst and a photocatalytic reaction cocatalyst, and achieves a high hydrogen production rate for a photocatalytic hydrogen production reaction. The method and the phosphorus-containing compound can be used for producing an electrode and producing a battery, so the production cost of the electrode and the battery is reduced, the preparation method is simplified, and the obtained electrode is a non-noble metal catalyst, and has the advantages of low cost, low overpotential, high stability and certain industrial application values.

The invention discloses a preparation method for a novel composite positive electrode based on sludge nitrogen-doped charcoal and porous volcanic, and a microbial fuel cell, and belongs to the technical field of resource utilization of new materials, new energy and waste water. Active sludge is subjected to a nitrogen high-temperature pyrolysis baking method to be made into porous nitrogen-doped charcoal; then an acidifying method is adopted to remove minerals from the surface to improve the electric conductivity of the charcoal; finally, by taking volcanic granules as a carrier, surface charcoal loading is performed to prepare and form the nitrogen-doped charcoal granules on the volcanic surface; the novel granules are high in porosity, high in electrical conductivity, large in specific surface area and capable of fully satisfying performance requirement of the positive electrode material of the microbial fuel cell; by virtue of the novel nitrogen-doped porous charcoal positive electrode, the positive electrode electrochemically active microorganisms and loading capacity of microorganisms of the microbial fuel cell can be improved; conversion rate of biomass energy in waste water can be improved; by virtue of low-resistance characteristic, the electron transfer efficiency is also improved; and finally, the power improvement of the microbial fuel cell, resource processing of the waste water, and efficient biological power generation are realized at the same time.

The invention discloses a purifying method of condensed water. The purifying method comprises the steps of adopting a honeycomb-shaped carrier type inorganic carbon membrane assembly to carry out at least one stage of membrane filtering treatment on high-temperature condensed water, wherein the filtering accuracy of the membrane assembly treated by membrane filtering is 0.001-100mum, and preparing the boiler supplementing water suitable for recycling. The purifying method disclosed by the invention has the advantages that the filtering accuracy is high, the membrane flux of a honeycomb-shaped carrier type membrane core is large, the impact resistance of incoming water is strong, the resistance to oil pollution is strong, the integration level of the membrane core structure is high, the preparation method is simple, a complex online discrimination system is not needed, and the prepared condensed water is stable in quality and high in temperature, meets the requirement on water quality of the boiler supplementing water and saves a great amount of heat.

The invention relates to a high-throughput forward-osmosis membrane containing a-C3N4 / Ag3PO4 composite material and a preparation method thereof. In the invention, a base film containing carbon nanotube (CNT) is used as a substrate, so that through the interfacial polymerization of polyamine and poly(acyl chloride), the a-C3N4 / Ag3PO4 composite material is successfully implanted into a polyamide layer generated by a reaction of m-phenylenediamine and trimesoyl chloride, thereby preparing the novel TFC film. Compared with a conventional TFC film, because the CNT can reduce the transfer path of water molecules and water transfer resistance is reduced, the transport of the water molecules is accelerated. In addition, the a-C3N4 in the a-C3N4 / Ag3PO4 composite material can supply extra nano-channels, so that water permeation rate of the forward-osmosis membrane is increased, and the separation performance of the forward-osmosis membrane is significantly enhanced. The composite is rich in negative charges, so that electronegativity of the surface of the membrane is improved; therefore, the surface of the membrane is not liable to attract pollutants and the antifouling performance is significantly improved.

The invention discloses a preparation method of a Co-MOF-GO film for microbial fuel cell and MFCs constructed by the preparation method, and belongs to the technical field of microbial fuel cells. Theinvention aims at solving the problems that an existing MFC anode is high in potential, low in power, short in period and the like. The preparation method comprises the following steps: 1, adding GOto water, performing uniform mixing, sequentially adding cobaltous nitrate hexahydrate and dimethyl imidazole, performing magnetic stirring, performing centrifuging, performing cleaning, and carryingout vacuum drying to obtain nanoparticles; 2, carrying out heat preservation heating under inert gas, and performing cooling to room temperature; 3, adding isopropyl alcohol and Nafion solution, and enabling the solution to uniformly disperse; 4, coating two sides of the carbon cloth with the mixture, and naturally drying the mixture. The constructed microbial electrolytic cell is an H-type double-chamber MECs. The maximum voltage of the MFCs is 0.56 V, the period is long, the COD removal rate reaches 79.195% + / -3.4766%, the coulombic efficiency reaches 9.3151% + / -0.5416%, and the maximum power density is 2303mV / m<2>.

The present invention discloses a solar energy self-produced fresh water planting device capable of using seawater for direct irrigation and belongs to the technical fields of solar energy concentration utilization and new agricultural facilities. The planting device is composed of a concentration reflector, a seawater tank, a condensation cavity, planting cavities, etc.; the planting cavities areprovided with water absorbing materials and soil; sunlight enters the device from a transparent cover plate on the upper part of the device, and is reflected by the reflector inside the device and directly projected into the seawater tank through a lower light-transmitting plate; seawater in the seawater tank absorbs the sunlight and thus temperature of the seawater is improved to finally realizea seawater evaporation process; steam condenses into fresh water on the inner surface of the condensation cavity; the fresh water is transported to the bottom parts of the planting cavities; the planting cavities are provided with the water absorbing materials; the water absorbing materials absorb water by capillary functions; and water is transported to the planting soil in the upper part for crop growth. The device integrates a seawater desalination system and a plant planting system into a whole structure and can be spliced in large quantities to achieve large-scale seawater desalination or crop planting by using the seawater.

The invention provides a method for increasing the concentration of 1, 3-propanediol in biological fermentation production, particularly relating to a method for adding an antibiotic, reducing transfer resistance when nutrition and metabolites enter or exit a cell, effectively promoting cell growth and increasing the concentration of the 1, 3-propanediol in the biological fermentation production. The technical process includes the steps that: a secondary seed culture solution is fed into a fermentation culture solution, meanwhile, the antibiotic which can improve cell permeability is added into the fermentation liquor, and the antibiotic is added to change the cell permeability so as to reduce the transfer resistance when the nutrition and the metabolites enter or exit the cell, thus improving the growth capability and the productivity of the thalli and increasing the concentration of the product, 1, 3-propanediol; furthermore, microbes are impelled to excrete the metabolites outside the cells, which decreases the accumulation of the metabolites in the cells, is favorable to eliminate the inhibition of products and by-products, especially reduces the inhibition of the 1, 3-propanediol to cell growth and cell catalytic activity, and at last, the concentration of the fermentation product, 1, 3-propanedio, is improved by 10 percent to 70 percent. The technical process is easy and simple, with low production cost.

Grounding finger for shielding at an electrical connection between a plug connector and a mating plug connector of an electrical line, having a sleeve-like support element which has a first outer edge and a second outer edge, axial connecting webs being provided between the outer edges, and having a plurality of spring limbs which act radially outward and, at least at one end, are connected to one of the edges in order to generate a spring-loaded contact force to the outer plug connector, with some of the connecting webs being interrupted and being formed in each case with at least one contact lug which faces radially inward.

The present invention provides a method of driving liquid flow at or near a free surface using self-assembled structures composed of magnetic particles subjected to an external AC magnetic field. A plurality of magnetic particles are supported at or near a free surface of liquid by surface tension or buoyancy force. An AC magnetic field traverses the free surface and dipole-dipole interaction between particles produces in self-assembled snake structures which oscillate at the frequency of the traverse AC magnetic field. The snake structures independently move across the free surface and may merge with other snake structures or break up and coalesce into additional snake structures experiencing independent movement across the liquid surface. During this process, the snake structures produce asymmetric flow vortices across substantially the entirety of the free surface, effectuating liquid flow across the free surface.

The invention discloses an air electrode, a preparation method of the air electrode and an electrochemical-chargeable zinc-air battery comprising the air electrode. The air electrode increases the contact site density of three-phase reaction of oxygen, an alkaline electrolyte and a solid catalyst in an electrode reaction area, provides a charge transfer reaction network for the oxidation reaction and reduction reaction of oxygen in the whole electrode three-dimensional space, and reduces charge transfer resistance, so that the energy density, power density and capacitive properties of the battery are improved, and the degree of polarization of the charging and discharging process is greatly reduced. The preparation process of the air electrode is simple, a high-temperature calcination and hot-pressing molding process technology is adopted, mass production is facilitated; the prices of used raw materials are low, and the preparation process is environmentally-friendly. The air electrode and the battery comprising the air electrode are economical and practical, have good performance and have important application prospects.

The invention provides a nano-modified lithium ion battery membrane, a manufacturing method thereof and a product containing the same. The manufacturing method comprises: preparing an organic sodium salt inclusion compound of a cyclodextrin molecular tube; and immersing a membrane which needs modification in an alkali solution of an organic sodium salt inclusion compound of the cyclodextrin molecular tube. The invention also provides a nano-modified lithium ion battery membrane obtained by the manufacturing method and a product containing the same. The membrane has high electrolyte wetting property and strong adhesion, and can neutralize unbonded hydrofluoric acid in the electrolyte, has high cycle performance, high capacity and can improve battery safety.

The invention discloses a film pressure thermal dehydration method and equipment for high-moisture sludge, and belongs to the technical field of sludge dehydration. The method is characterized by comprising the following steps of: spreading the sludge subjected to conventional mechanical dehydration into a film of 1 to 10mm, regulating hot extrusion temperature and pressure for partition wall hot extrusion dehydration, separating out moisture in a liquid form, and further applying the sludge after the moisture is separated out. The invention has the advantages that: the energy consumption is low, and the energy utilization rate is high; in the dehydration process, seamless compression is adopted, and a wall-sticking phenomenon of conventional equipment is avoided, so that the whole dehydration process is smooth and feasible; and the process flow is simple and high in feasibility, other substances are not introduced, and the further treatment and recycle of the sludge are not influenced.

The present invention relates to an electric heating means (1) having an electric heating conductor (2) covered by an insulating layer (4). Provision is made so that between the heating conductor (2) and the insulating layer (4), an electrically conductive interlayer (3) is arranged.

A land-based electric vehicle charging plug has a plug base and a separate and exchangeable interface which is detachably fastened to the plug base. The plug base has an electrically non-conductive base body and at least one charging current base contact. The interface has an electrically non-conductive interface body and at least one charging current interface contact which is plugged-together with the corresponding charging current base contact. The plug base and the interface have a positive guide which forms an insertion funnel.

The invention relates to a fast-charging, high-compaction and high-capacity artificial graphite negative electrode material and a preparation method thereof. The preparation method comprises the steps of raw material crushing treatment, raw material surface treatment, granulation, graphitization and carbon coating. According to the fast-charging, high-compaction and high-capacity artificial graphite negative electrode material, the high-capacity characteristic of the material is guaranteed by selecting the easily-graphitized coke as a raw material, and then the raw material is subjected to surface treatment, so that the surface appearance of particles is improved, the particle size distribution of the particles is optimized, and the compaction density of the material is further improved. Through granulation, shortening of a lithium ion transmission path and increase of a lithium ion transmission channel, the surface carbon coats the graphite surface to form a layer of amorphous carbon, the interlayer spacing of the graphite surface is increased, and the transmission resistance of lithium ions on the graphite surface is reduced, so that the fast charging performance is improved.

The invention discloses a method for effectively producing vitamin K2 by improving cell membrane permeability. The method comprises the following steps: (1) inoculating a vitamin K2 production strain into a bevel culture medium and activating; (2) inoculating the activated strain into a seed medium containing a nonionic surfactant for culturing; (3) continuously inoculating the acquired culture liquid into the seed medium containing a nonionic surfactant for culturing; and (4) inoculating the culture liquid into a fermentation medium, culturing for 144-240h at 100-700rpm and 0.5-5vvm, fermenting for 0-72h and then adding the nonionic surfactant, performing plug-in low-power ultrasonic separating treatment, sampling at fixed time and detecting the cell and vitamin K2 concentration. The method disclosed by the invention has the advantages that a simple, economical and effective fermenting technology is supplied, the vitamin K2 concentration is effectively increased, the production efficiency is increased and the production cost is lowered.