Application of zinc-based ternary layered composite oxide to zinc-nickel battery electrode material

A composite oxide, zinc-based ternary layer technology, applied in battery electrodes, alkaline storage battery electrodes, circuits, etc., can solve problems such as reducing the capacity of zinc oxide, achieve improved electrochemical performance, improved dendrites, and increased utilization Effect

Inactive Publication Date: 2014-02-12
CENT SOUTH UNIV
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  • Abstract
  • Description
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However, the disadvantage of this active material is

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  • Application of zinc-based ternary layered composite oxide to zinc-nickel battery electrode material
  • Application of zinc-based ternary layered composite oxide to zinc-nickel battery electrode material

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[0028] Example 1

[0029] 8.95 parts by weight of analytically pure zinc nitrate were respectively dissolved in 100 parts by weight of deionized water, 2.25 parts by weight of analytically pure aluminum nitrate and 1.24 parts by weight of analytically pure indium nitrate were dissolved in 100 parts by weight of deionized water, Mix the above three solutions uniformly 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 drop the salt solution and alkaline solution into 50 parts by weight of deionized water, control the pH of the solution to be 10.0, continue stirring for 80 min, age for 20 h, and finally filter and wash the precipitate, and After drying at 60 °C for 4 h, a sample of carbonate zinc-aluminum-indium hydrotalcite was obtained. The hydrotalcite is placed in a muffle furnace, and calc...

Example Embodiment

[0030] Example 2

[0031]8.95 parts by weight of analytically pure zinc nitrate was dissolved in 100 parts by weight of deionized water, 2.25 parts by weight of analytically pure aluminum nitrate and 1.26 parts by weight of analytically pure lanthanum nitrate were dissolved in 100 parts by weight of deionized water, Mix the above three solutions uniformly to form a salt solution. An alkaline solution was formed by dissolving 5.60 parts by weight of potassium hydroxide and 2.76 parts by weight of potassium carbonate in 50 parts by weight of deionized water. Under strong mechanical stirring, slowly drop the salt solution and alkali solution into 50 parts by weight of deionized water, control the pH of the solution to be 10.0, continue stirring for 100 min, age for 20 h, and finally filter and wash the precipitate, and After drying at 60°C for 4h, a sample of carbonate zinc-aluminum-lanthanum hydrotalcite was obtained. The hydrotalcite is placed in a muffle furnace, and calcine...

Example Embodiment

[0032] Example 3

[0033] 8.95 parts by weight of analytically pure zinc nitrate are dissolved in 100 parts by weight of deionized water, 2.25 parts by weight of analytically pure aluminum nitrate and 1.26 parts by weight of analytically pure copper nitrate are dissolved in 100 parts by weight of deionized water, Mix the above three solutions uniformly to form a salt solution. An alkaline solution was formed by dissolving 6.72 parts by weight of potassium hydroxide and 2.76 parts by weight of potassium carbonate in 50 parts by weight of deionized water. Under strong mechanical stirring, the alkaline solution and the alkaline solution were slowly added dropwise to 50 parts by weight of deionized water, the pH of the solution was controlled to be 10.0, the stirring was continued for 120 min, and the aging was carried out for 20 h. Finally, the precipitate was filtered and washed. After drying at 60 °C for 4 h, a sample of carbonate zinc-aluminum-copper hydrotalcite was obtained...

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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...

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Application Information

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IPC IPC(8): H01M4/36H01M4/48H01M4/24
CPCY02E60/124H01M4/244H01M4/48H01M4/62H01M4/625Y02E60/10
Inventor 杨占红张政冯召宾
Owner CENT SOUTH UNIV
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