Alkaline cell

A dry battery, alkaline technology, applied in the field of alkaline dry batteries, can solve the problems of decreased discharge capacity, reduced electrode reaction speed, low utilization rate, etc., to achieve the effect of inhibiting polarization

Inactive Publication Date: 2008-11-12
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the polarization phenomenon is obvious, it will bring disadvantages such as a decrease in the reaction speed of the electrode reaction. As a result, the discharge capacity will decrease, which will lead to a low utilization rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1

[0134] Compound 1 represented by the following (Chemical Formula 4) was synthesized by an esterification reaction between alkyl polyoxyethylene alcohol and phosphoric acid.

[0135] [chemical formula 4]

[0136]

[0137] In addition, (Chemical Formula 4) is an organic compound represented by the above-mentioned (Chemical Formula 1).

[0138] In Example 1, first, in the preparation of the above-mentioned alkaline electrolyte solution, 0.5% by weight of compound 1 was added to the alkaline electrolyte solution, and it was dissolved after sufficiently stirring.

[0139] Next, using the alkaline electrolyte and according to the prescribed conditions shown in (Table 1), AAA alkaline dry batteries were produced in accordance with the steps "2" to "4".

[0140] In addition, in the production of the above-mentioned "1" alkaline electrolyte, except that an alkaline electrolyte without any addition was prepared, the same single 3-shaped alkaline dry battery as in Example 1 was prod...

Embodiment 2～8 and comparative example 2～3

[0153] Through the esterification reaction between alkyl alcohol, polyethylene glycol and phosphoric acid, polyoxyethylene alkyl ether phosphate as shown in the following general formula (chemical formula 5) is obtained.

[0154] [chemical formula 5]

[0155]

[0156] In (chemical formula 5), ​​R is -CH 2 CH 2 -or-CH(CH 3 )CH 2 -.

[0157] In addition, (Chemical Formula 5) is an organic compound represented by the above-mentioned (Chemical Formula 1) or an alkali metal salt thereof.

[0158]In addition, by changing the degree of polymerization of ethylene glycol in polyethylene glycol, the number of carbon atoms of the alkyl group in the alkyl alcohol, and the type of salt that neutralizes the phosphoric acid group, as shown in Table 2, as the general formula (chemical formula 5 ) in the structural parameters m, n, X and Y are combined to produce compounds 2-10.

[0159] Incidentally, Compound 1 used in Example 1 is a compound when m=4, n=1, and X, Y="H (hydrogen atom...

Embodiment 9～16 and comparative example 4～6

[0170] Phosphoric acid ester represented by the following general formula (chemical formula 6) is obtained by the esterification reaction between alkyl alcohol and phosphoric acid.

[0171] [chemical formula 6]

[0172]

[0173] In addition, (Chemical formula 6) is an organic compound represented by the above-mentioned (Chemical formula 2) or an alkali metal salt of the organic compound.

[0174] In addition, by changing the number of carbon atoms of the alkyl group in the alkanol and the type of salt that neutralizes the phosphate group, as shown in Table 3, m, n, m+ as structural parameters in the general formula (chemical formula 6) Compounds 11 to 21 were prepared by variously changing n, X, and Y.

[0175] In addition, in the preparation of the above-mentioned "1" alkaline electrolyte, 0.5% by weight of compounds 11 to 21 was added to the alkaline electrolyte, and after fully stirring and dissolving, a single A 3-shaped alkaline dry battery, and a 250 mA intermittent...

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Abstract

An alkaline dry battery includes a positive electrode, a negative electrode, a separator, and an alkaline electrolyte. The separator is provided between the positive electrode and the negative electrode, and the positive electrode, the negative electrode, and the separator are impregnated with the alkaline electrolyte. A battery depolarizer, which is an organic compound having a function of depolarizing both the positive electrode and the negative electrode or an alkaline metal salt thereof, is added to at least the alkaline electrolyte.

Description

technical field [0001] The present invention relates to an alkaline dry battery, in particular to an alkaline dry battery capable of suppressing polarization at both positive and negative electrodes. Background technique [0002] Alkaline dry batteries generally include a positive electrode, a negative electrode, a diaphragm and an alkaline electrolyte. The positive electrode generally uses manganese dioxide, the negative electrode generally uses zinc, and the electrolyte generally uses an alkaline electrolyte (specifically, an aqueous potassium hydroxide solution). [0003] Conventionally, such alkaline dry batteries have been used in low-load discharge areas (consumption current is about several tens of mA), and built into remote controls, watches, and the like. Recently, people are studying the use of alkaline dry batteries in the medium load discharge area (consumption current is 100 to several 100 mA) or high load discharge area (consumption current is 1000 to 2000 mA)....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/06H01M6/04H01M6/06
CPCH01M2300/0014H01M2006/5094H01M6/06H01M6/5072H01M6/045H01M6/50
Inventor 加藤丞泉秀胜野矢重人
Owner PANASONIC CORP
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