Electrode material for disposable alkaline batteries

An alkaline battery, electrode material technology, applied in the direction of primary battery electrodes, battery electrodes, dry batteries, etc., can solve the problems of reduced electrochemical reaction rate, inability to meet high power, inapplicability, etc., to reduce usage and improve thoroughness. , improve the effect of the reaction

Inactive Publication Date: 2013-01-02
黄宣斐
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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 voltage characteristic in characteristics, that is, the average operating voltage of the battery gradually decreases when it is discharged, and when the battery is consumed at a higher power, the voltage drops. Therefore, the actual battery capacity obtained by the zinc-manganese battery under high power consumption is smaller than the battery capacity under low power consumption, so the current zinc-manganese battery is not suitable for high power consumption appliances such as cameras, etc.
In order to realize a disposable alkaline battery that can be used at high power, alkaline batteries with nickel oxyhydroxide as the cathode active material are mainly used, or nickel oxyhydroxide and manganese dioxide are used in a weight ratio of 1:1. Ratio as the cathode active material method to produce disposable alkaline batteries, but the cost of nickel oxyhydroxide is much higher than that of manganese dioxide

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0022] In a specific embodiment of the present invention, the zinc or zinc alloy in the anode material 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 the two types of particles is 3:10-4:10; the graphite accounts for 5%-12% of the weight of the anode material and adopts 10-30 nanometer particles; the zinc or zinc alloy includes 0.015%-0.025 % of aluminum; if adopting in the embodiment is metal zinc then mixed according to the content of the aforementioned aluminum in the form of aluminum powder or alumina powder; if adopting in the embodiment is zinc alloy, then in the production of zinc alloy according to Proportionally added. 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 electro...

Embodiment 2

[0029] In this embodiment, the anode active material is metal zinc or zinc alloy, the proportion of graphite in the anode is 5%, 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 cathode active material, manganese dioxide accounts for 85%, nickel oxyhydroxide accounts for 15%, and the conductive carbon particles in the cathode are graphite, accounting for 35%. , also can select other conductive carbon particles for use; 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 usefulness of battery And economic considerations are preferred with potassium hydroxide. Aluminum is chosen as the hydrogen suppressor in the examples of the present invention because it is the mos...

Embodiment 3

[0031] In this embodiment, the anode active material is metal zinc or zinc alloy, the proportion of graphite in the anode is 10%, and the selected aluminum or aluminum oxide accounts for 0.015% of the zinc content. One or two metals or metal oxides of bismuth, indium, and germanium mentioned; manganese dioxide accounts for 90% of the cathode active material, nickel oxyhydroxide accounts for 10%, and graphite is used for 30% of the conductive carbon particles in the cathode , and other conductive carbon particles can also be selected; the 53% potassium hydroxide aqueous solution selected for the alkaline electrolyte can certainly also select sodium hydroxide or lithium hydroxide at this concentration to realize the present invention, but from the performance of the battery And economic considerations are preferred with potassium hydroxide.

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PUM

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Abstract

The invention relates to an electrode material for disposable alkaline batteries. The electrode material comprises an anode material, a cathode material, a septum, alkaline electrolyte, an anode collector and gel, wherein the septum is positioned between an anode and a cathode, the cathode material comprises manganese dioxide and nickel oxide hydroxide which serve as cathode activity materials as well as conductive carbon grains, and the anode material refers to zinc or zinc alloy and graphite.

Description

technical field [0001] The invention belongs to the field of batteries, in particular to electrode materials for disposable alkaline batteries. 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 graphit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/06H01M4/62H01M6/06
CPCY02E60/12
Inventor 黄宣斐
Owner 黄宣斐
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