Application of a zinc-based ternary layered composite oxide as an electrode material for a zinc-nickel battery

A composite oxide, zinc-based ternary layer technology, used in battery electrodes, alkaline battery electrodes, circuits, etc., can solve problems such as reducing the capacity of zinc oxide, improve electrochemical performance, inhibit growth, and improve deformation dendrites Effect

Inactive Publication Date: 2015-08-05
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this active material is that it greatly reduces the capacity of zinc oxide.

Method used

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  • Application of a zinc-based ternary layered composite oxide as an electrode material for a zinc-nickel battery
  • Application of a zinc-based ternary layered composite oxide as an electrode material for a zinc-nickel battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The analytically pure zinc nitrate of 8.95 parts by weight is dissolved respectively in the deionized water of 100 parts by weight, the analytically pure aluminum nitrate of 2.25 parts by weight and the analytically pure indium nitrate of 1.24 parts by weight are dissolved in the deionized water of 100 parts by weight, Mix the above three solutions evenly to form a salt solution. 3.4 parts by weight of sodium hydroxide and 2.10 parts by weight of sodium carbonate were dissolved in 50 parts by weight of deionized water to form an alkaline solution. Under strong mechanical stirring, slowly add the salt solution and alkali solution dropwise into 50 parts by weight of deionized water, control the pH of the solution to 10.0, continue to stir for 80 minutes, age for 20 hours, and finally filter, wash and remove the precipitate. Dry at 60°C for 4 hours to obtain a carbonate-type zinc aluminum indium hydrotalcite sample. The hydrotalcite is placed in a muffle furnace and calci...

Embodiment 2

[0031]The analytically pure zinc nitrate of 8.95 parts by weight is dissolved in 100 parts by weight of deionized water, the analytically pure aluminum nitrate of 2.25 parts by weight and the analytically pure lanthanum nitrate of 1.26 parts by weight are dissolved in 100 parts by weight of deionized water, Mix the above three solutions evenly to form a salt solution. 5.60 parts by weight of potassium hydroxide and 2.76 parts by weight of potassium carbonate were dissolved in 50 parts by weight of deionized water to form an alkaline solution. Under strong mechanical stirring, slowly add salt solution and alkali solution dropwise into 50 parts by weight of deionized water, control the pH of the solution to 10.0, continue to stir for 100 minutes, age for 20 hours, and finally filter, wash and remove the precipitate. Dry at 60°C for 4 hours to obtain a carbonate-type zinc-aluminum-lanthanum hydrotalcite sample. The hydrotalcite is placed in a muffle furnace and calcined at a hig...

Embodiment 3

[0033] The analytically pure zinc nitrate of 8.95 weight parts is dissolved in the deionized water of 100 weight parts, the analytically pure aluminum nitrate of 2.25 weight parts and the analytically pure copper nitrate of 1.26 weight parts are dissolved in the deionized water of 100 weight parts, Mix the above three solutions evenly to form a salt solution. 6.72 parts by weight of potassium hydroxide and 2.76 parts by weight of potassium carbonate were dissolved in 50 parts by weight of deionized water to form an alkaline solution. Under strong mechanical stirring, slowly add the alkali solution and the alkali solution dropwise into 50 parts by weight of deionized water, control the pH of the solution to 10.0, continue to stir for 120 minutes, age for 20 hours, and finally filter, wash, and remove the precipitate. Dry at 60°C for 4 hours to obtain a carbonate-type zinc-aluminum-copper hydrotalcite sample. The hydrotalcite is placed in a muffle furnace and calcined at a high...

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Abstract

The invention discloses an application of a zinc-based ternary layered composite oxide to a zinc-nickel battery electrode material. The zinc-based ternary layered composite oxide is obtained by calcining carbonate type ternary zinc-based hydrotalcite; the ternary zinc-based hydrotalcite is prepared from zinc nitrate and two selected from divalent metal oxides and trivalent metal nitrates without the zinc nitrate. The zinc-based ternary layered composite oxide is used as an active substance so that the deformation of a zinc cathode is weakened, the dissolution of the active substance of the zinc cathode is inhibited, the reversibility of a zinc-nickel battery electrode is improved and the service life of the zinc-nickel battery electrode is prolonged.

Description

technical field [0001] The invention belongs to the field of batteries and their applications, and in particular relates to the use of a zinc-based ternary layered composite oxide as an electrode material for a zinc-nickel battery. Background technique [0002] Alkaline zinc-nickel secondary batteries have the characteristics of large specific energy, high specific power, stable working voltage, and low price. However, problems such as deformation and dendrites of the active material zinc are the key points that limit the widespread development of this battery. The main cause of these difficulties is the dissolution of the active species in the alkaline electrolyte. During the charging process, the active material zinc deposition is not uniform, which will lead to the current density gradient, which will cause the deformation and dendrite of zinc. Aiming at this problem, people have done a lot of research on the improvement of zinc anode. It is mainly to add additives when...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/24
CPCH01M4/244H01M4/48H01M4/62H01M4/625Y02E60/10
Inventor 杨占红张政冯召宾
Owner CENT SOUTH UNIV
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