Electrode material of alkaline battery

An alkaline battery and electrode material technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of reduced electrochemical reaction rate, inability to meet high power, and high cost, reducing usage, improving thoroughness, and improving the reaction. Effect

Inactive Publication Date: 2015-03-04
杨雯雯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current disposable alkaline battery is limited by the commercial model, and the capacity of the battery is fixed. In order to increase the battery capacity, that is, the service life of the battery or the higher power consumption of the battery to meet the needs of some high-power electrical appliances, it is generally used to increase the battery capacity. The interface surface area of ​​the electrode active material and the way to increase the active material in the battery are generally achieved by increasing the density of the active material. After the density of the active material reaches a certain level, the increase in the density will lead to the discharge process. The chemical reaction rate is reduced, so that it cannot meet the needs of high power
[0004] Another problem with zinc-manganese disposable alkaline batteries that are mainly used now is that the battery has a sloped vo

Method used

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Embodiment 1

[0031] In a specific embodiment of the present invention, the zinc or zinc alloy in the anode is in the form of particles, and the particles are generally in two ways, one is about 200 mesh particles, and the other is about 10-30 mesh particles. The ratio of quasi-particles is 3:10-4:10; the graphite accounts for 15% of the anode weight and adopts 10-30 nanometer particles; 0.015% aluminum or aluminum oxide is included in the zinc or zinc alloy; if In the embodiment, metal zinc is used in the form of aluminum powder or aluminum oxide powder to be mixed according to the aforementioned aluminum content; if zinc alloy is used in the embodiment, it is added in proportion to the production of zinc alloy. The purpose of adding aluminum to zinc or zinc alloy is to suppress the generation of hydrogen. The purpose of this ratio is to ensure that the content of aluminum in the electrolyte is 30-75ppm. If the content of aluminum in the electrolyte is lower than 30ppm, although it will It...

Embodiment 2

[0038] In this embodiment, the anode active material is metal zinc or zinc alloy, the proportion of graphite in the anode is 12%, and the selected aluminum or aluminum oxide accounts for 0.025% of the zinc content. Mentioned bismuth, indium, germanium in one or two kinds of metals or metal oxides; In the described cathode, by weight percentage, by the manganese dioxide of 55%, the nickel oxyhydroxide of 12%, the metallic nickel of 3% and 30% % of conductive carbon particles; in this embodiment, the conductive carbon particles are graphite. The 55% potassium hydroxide aqueous solution that described alkaline electrolyte selects for use, certainly also can select sodium hydroxide or lithium hydroxide under this concentration and all can realize the present invention, but from the efficiency of battery and economical aspect consider with potassium hydroxide as preferred. The reason for choosing aluminum as the hydrogen suppressor in the embodiments of the present invention is ec...

Embodiment 3

[0040]In this embodiment, the anode active material is metal zinc or zinc alloy, the proportion of graphite in the anode is 13%, and the selected aluminum or aluminum oxide accounts for 0.018% of the zinc content, and all the components in the technical solution can also be selected. Mentioned bismuth, indium, germanium in one or two metals or metal oxides; in the cathode active material, manganese dioxide accounts for 52%, nickel oxyhydroxide accounts for 13%, metal nickel accounts for 2%, and the conductive carbon particles in the cathode are selected What is graphite accounts for 33%, also can select other conductive carbon particle for use; The 53% potassium hydroxide aqueous solution that described alkaline electrolyte is selected, certainly also can select sodium hydroxide or lithium hydroxide under this concentration and all can realize the present invention , but potassium hydroxide is preferred in terms of battery performance and economy.

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PUM

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Abstract

The invention relates to an electrode material of an alkaline battery. The electrode material comprises an anode, a cathode, a separation plate located between the anode and the cathode, an alkaline electrolyte, an anode current collector and gel; the cathode comprises the following cathodic active materials: manganese dioxide, nickel oxyhydroxide and conductive carbon particles; and the anode comprises zinc or zinc alloy, and graphite.

Description

technical field [0001] The invention belongs to the battery field, in particular to an electrode material for an alkaline battery. Background technique [0002] A disposable alkaline battery includes an anode, a cathode, an electrolyte-permeable separator between the anode and cathode, and an alkaline electrolyte. The anode includes the anode active material, which is mainly zinc or zinc alloy particles and a conventional gelling agent. The gelling agent is used to fix the zinc particles in the suspension so that the zinc particles can contact each other. The anode current collector is inserted into the gelling agent. In the zinc pole, the alkaline electrolyte is typically an aqueous solution of potassium hydroxide, and may also be an aqueous solution of sodium hydroxide or lithium hydroxide, and the cathode includes a cathode active material, which includes manganese dioxide or nickel oxyhydroxide or a mixture thereof and a conductive Additives such as graphite etc. [00...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/36H01M4/38H01M4/52
CPCH01M4/38H01M4/48H01M4/583H01M4/60H01M4/62Y02E60/10
Inventor 杨雯雯
Owner 杨雯雯
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