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

A composite oxide and zinc-based binary layer technology, applied in battery electrodes, alkaline battery electrodes, circuits, etc., can solve the problems of reducing the capacity of zinc oxide, and achieve improved electrochemical performance, dendrite improvement, and discharge specific capacity high effect

Inactive Publication Date: 2016-05-25
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 binary layered composite oxide as an electrode material for a zinc-nickel battery
  • Application of a zinc-based binary layered composite oxide as an electrode material for a zinc-nickel battery
  • Application of a zinc-based binary layered composite oxide as an electrode material for a zinc-nickel battery

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Dissolve 8.95 parts by weight of analytically pure zinc nitrate in 100 parts by weight of deionized water, dissolve 2.25 parts by weight of analytically pure aluminum nitrate in 100 parts by weight of deionized water, and mix the above two 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 hydrotalcite sample. The hydrotalcite is placed in a muffle furnace and calcined at a high temperature of 500° C. for 5 hours to obtain a zinc-aluminum layered composite oxide. Add 0.8...

Embodiment 2

[0031]Dissolve 8.95 parts by weight of analytically pure zinc nitrate in 100 parts by weight of deionized water, dissolve 2.25 parts by weight of analytically pure indium nitrate in 100 parts by weight of deionized water, and mix the above two solutions evenly to form a salt solution . 3.4 parts by weight of potassium hydroxide and 2.1 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 indium hydrotalcite sample. The hydrotalcite is placed in a muffle furnace and calcined at a high temperature of 500° C. for 5 hours to obtain a zinc-indium layered composite oxide. Add 0.86g o...

Embodiment 3

[0033] Dissolve 8.95 parts by weight of analytically pure zinc nitrate in 100 parts by weight of deionized water, dissolve 2.25 parts by weight of analytically pure bismuth nitrate in 100 parts by weight of deionized water, and mix the above two solutions evenly to form a salt solution . 3.4 parts by weight of potassium hydroxide and 2.1 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-bismuth hydrotalcite sample. The hydrotalcite is placed in a muffle furnace and calcined at a high temperature of 500° C. for 5 hours to obtain a zinc-bismuth layered composite oxid...

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Abstract

The invention discloses an application of a zinc-based binary layered composite oxide to a zinc-nickel battery electrode material. The zinc-based binary layered composite oxide is obtained by calcining carbonate type binary zinc-based hydrotalcite; the binary zinc-based hydrotalcite is prepared from zinc nitrate and one selected from trivalent metal oxides. The zinc-based binary 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 binary 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): H01M4/48H01M4/62H01M4/24
CPCH01M4/244H01M4/483H01M4/62H01M4/625Y02E60/10
Inventor 杨占红张政冯召宾
Owner CENT SOUTH UNIV
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