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Preparation method for Ni-Co/carbon nanotube aerogel catalyst of zinc-air battery

A carbon nanotube, zinc-air battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of restricting the application and development of zinc-air batteries, high price, poor stability, etc., and achieve high product quality and safety. , the effect of good performance

Active Publication Date: 2016-05-25
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to achieve real commercial application of zinc-air batteries, the cost and performance of ORR and OER catalysts need to be solved.
Ruthenium, iridium, and platinum catalysts are the most commonly used catalysts for cash, but their high price, scarcity, and poor stability severely limit the application and development of zinc-air batteries.

Method used

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  • Preparation method for Ni-Co/carbon nanotube aerogel catalyst of zinc-air battery
  • Preparation method for Ni-Co/carbon nanotube aerogel catalyst of zinc-air battery
  • Preparation method for Ni-Co/carbon nanotube aerogel catalyst of zinc-air battery

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Effect test

Embodiment 1

[0026] Dissolve 0.404 g of sodium alginate in 40 g of secondary deionized aqueous solution and stir for 6 hours to obtain a uniformly mixed 1 wt % sodium alginate solution, which is designated as solution 1. 0.0161 g of carbon nanotubes was mixed into the sodium alginate solution prepared above, and stirred for 6 hours to obtain a mixed solution of sodium alginate carbon nanotubes, which was designated as solution 2. Dissolve 1.3 g of nickel chloride hexahydrate and 1.3 g of cobalt chloride hexahydrate in 50 g of secondary deionized aqueous solution to obtain a mixed solution of nickel chloride and cobalt chloride, which is designated as solution 3. Drop solution 2 into the mixed solution of nickel chloride and cobalt chloride, that is, solution 3, to form a hydrogel of nickel-cobalt alginate carbon nanotubes. After the drop is completed, let it stand for 2 hours. The nickel-cobalt alginate carbon nanotube gel obtained above was separated, and washed with secondary deionized w...

Embodiment 2

[0028] In addition to mixing 0.1616g of carbon nanotubes into the sodium alginate solution prepared above and stirring for 6 hours, a mixed solution of sodium alginate carbon nanotubes was obtained, which was designated as solution 2. All the other steps are identical to Example 1.

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Abstract

The invention discloses a preparation method for a Ni-Co / carbon nanotube aerogel catalyst of a zinc-air battery, which is used for the field of the zinc-air battery. In the catalyst, the nanometer Ni-Co / carbon nanotube aerogel dual-functional catalyst is successfully prepared by taking sodium alginate, cobalt chloride hexahydrate, nickel chloride hexahydrate and carbon nanotubes as raw materials. The dual-functional catalyst is endowed with excellent oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) catalytic performance, the initial potential of OER is early, the current density of the dual-functional catalyst is large, the initial potential of ORR is early, the limiting current density is large, and the stability is high; and moreover, the charging and discharging voltage difference of the zinc-air battery before and after long circulation test is small, and the energy efficiency after long circulation is high. The preparation method has the advantages of simplicity, rapidness in operation, greenness and environment friendliness, the source of sodium alginate is rich, and the obtained dual-functional catalyst is excellent in performance and is the zinc-air battery catalyst having a very good prospect.

Description

technical field [0001] The invention belongs to the field of zinc-air batteries, and in particular relates to a preparation method of a nano-nickel-cobalt / carbon nanotube airgel zinc-air battery catalyst. . Background technique [0002] Metal-air batteries are considered a new type of energy conversion device without environmental pollution, and their efficiency is significantly higher than that of traditional generators. In recent years, zinc-air batteries have shown good application prospects. However, in order to achieve real commercial application of Zn-air batteries, the cost and performance of ORR and OER catalysts need to be solved. Ruthenium, iridium, and platinum catalysts are the most commonly used catalysts for cash, but their high price, scarcity, and poor stability severely limit the application and development of zinc-air batteries. Therefore, the development of a new type of Zn-air battery catalyst with a wide range of sources is a difficulty that must be ov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90
CPCH01M4/9008Y02E60/50
Inventor 杨东江朱小奕李建江孙瑾
Owner QINGDAO UNIV
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