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Alkaline dry battery

A dry battery, alkaline technology, applied in the direction of alkaline battery electrodes, airtight batteries, battery electrodes, etc., can solve the problem of rapid decline in high current performance.

Inactive Publication Date: 2005-06-01
ZHONGYIN NINGBO BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after long-term storage, the battery still has the defect of rapid decline in high-current performance.

Method used

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  • Alkaline dry battery
  • Alkaline dry battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The positive electrode casing 1 of the battery is made of nickel-plated steel, and the graphite coating film 2 is coated on the inside of the casing 1. The positive electrode ring 3 containing γ-nickel oxyhydroxide is put into the positive electrode casing 1, and it is pressed tightly against it. on the inner surface of the positive casing. The separator paper 4 is put into the positive electrode ring 3, and about 40% (by weight) of potassium hydroxide aqueous solution is injected as the electrolyte, so that the separator paper 4 and the positive electrode ring 3 fully absorb liquid. Then put the zinc paste 5 as the negative electrode active material into the separator paper 4 . The zinc paste 5 is a gel-like substance prepared by mixing zinc powder, alkaline electrolyte (such as potassium hydroxide, sodium hydroxide) and binder sodium polyacrylate. The copper nail 6 of the negative electrode current collector is combined with the sealing ring 7 and the iron bottom 8 a...

Embodiment 2

[0012] In the same manner as in Example 1, the positive electrode ring "b" made of manganese dioxide instead of the above-mentioned γ-nickel oxyhydroxide, and the negative electrode zinc paste 5 are used to form an alkaline dry battery "B", and the initial stage and 70 The discharge duration after storage for 7 days at °C is shown in the table.

Embodiment 3

[0014] In the same manner as in Example 1, the γ-nickel oxyhydroxide containing 3.5% (percentage by weight) of zinc oxide is used to replace the positive electrode ring "c" made by the γ-nickel oxyhydroxide in Example 1, and the negative electrode zinc paste 5 An alkaline dry cell "C" was assembled, and the discharge duration was measured at the initial stage and after storage at 70°C for 7 days, and its measurement results are shown in the table.

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Abstract

The invention relates to the alkaline dry battery comprising the positive electrode, the negative electrode and the alkaline electrolyte. The negative electrode is made from zinc powder containing active material. The positive electrode is made from active material containing more than 80% (weight) of gamma hydroxy-nickel oxide, the compound or admixture of oxygenous zinc and cobalt. The content of the compound or admixture of oxygenous zinc and cobalt is about 0.1-10% (weight) of hydroxy-nickel oxide. Comparing with the prior art, the alkaline dry battery made by the invented method providesthe advantages of the large load discharge characteristic improved greatly. The said advantage even gives evidence for the battery being stored for long period of storage.

Description

technical field [0001] The invention relates to the technical field of chemical power sources, in particular to an alkaline dry battery using gamma-nickel oxyhydroxide as a positive electrode active material. Background technique [0002] In the chemical power supply series, the battery that cannot be used to restore the active material by a simple charging method after the battery is discharged is a primary battery, also called a primary dry battery. The most common one is alkaline zinc-manganese dioxide battery, but due to its shortcomings of uneven discharge curve and low discharge capacity in the high-voltage section, it is no longer suitable for some current electronic products with high discharge power and high termination voltage. In recent years, alkaline batteries using nickel oxyhydroxide or containing manganese dioxide and nickel oxyhydroxide as positive electrode active materials have come out one after another. Compared with conventional alkaline dry batteries w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/32H01M4/52H01M4/62H01M10/34
CPCY02E60/10
Inventor 朱效铭忻乾康
Owner ZHONGYIN NINGBO BATTERY CO LTD
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