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Alkaline battery

A storage battery, alkaline technology, applied in the field of alkaline storage batteries, can solve the problems of difficulty, high output and long life, difficult to ensure hydrophilicity, etc., and achieve the effect of high output and long life

Active Publication Date: 2014-08-20
SHONAN CORUN ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the shielding property is improved while reducing the weight per unit area, when the first segment is produced by combining the main fiber and the ultrafine fiber, it is difficult to ensure hydrophilicity only by sulfonation treatment, and it is difficult to achieve further improvement. high output and long life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (production of separator)

[0054] Produced by a known method using polyolefin-based binder fibers and high-strength polypropylene fibers as materials, and the weight per unit area of ​​fine fibers is 65g / m. 2 split pieces. This partition is the second partition.

[0055] In addition, the value represented by the following calculation formula is 2.5×10 －3 In the same manner, the segment was subjected to sulfuric acid treatment using a known method.

[0056] Sulfuric acid treatment degree = (SO in split piece 4 Amount (g) / SO 4 formula weight) / (divided piece weight (g)×3 / (propylene molecular weight))

[0057] Furthermore, for the segmented material produced as described above, a segmented material whose surface was modified by corona discharge treatment was manufactured by a known method. This divided material is made into the 1st divided material.

[0058] (production of positive electrode)

[0059] Nickel hydroxide powder is used as the active material, cobalt c...

Embodiment 2

[0067] Compared with Example 1, except that the degree of sulfuric acid treatment of the first segment is 1.0×10 －3 Except for this, a nickel-metal hydride battery produced in the same manner as in Example 1 was used as Example 2.

Embodiment 3

[0069] Compared with Example 1, except that the degree of sulfuric acid treatment of the first segment is 1.5×10 －3 Except for this, a nickel-metal hydride battery produced in the same manner as in Example 1 was used as Example 3.

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Abstract

The invention provides an alkaline battery capable of realizing high output and simultaneously keeping intensity of a cutting piece; the alkaline battery (1) comprises an anode (10) and a cathode (30) winding around the cutting piece (30); the cutting piece comprises a first cutting piece (31) and a second cutting piece (32); the first cutting piece (31) is formed by polyolefin non-woven fiber after sulfuric acid treatment and electric corona treatment; the second cutting piece (32) is formed by polyolefin non-woven fiber having no hydrophilic treatment.

Description

technical field [0001] The present invention relates to an alkaline storage battery having a special separator structure. Background technique [0002] In recent years, the use of secondary batteries (storage batteries) has expanded, and they are used in a wide range of personal computers, portable terminals, electric vehicles, hybrid vehicles, electric bicycles, and electric tools. Among them, alkaline storage batteries represented by nickel-metal hydride storage batteries and nickel-cadmium storage batteries are used in various applications such as dry cell type secondary batteries and large storage batteries for hybrid vehicles. Then, a non-woven fiber cloth made of polyolefin-based fibers excellent in alkali resistance is generally used as a separator for separating the positive electrode and the negative electrode to hold the alkaline storage battery used in such an alkaline storage battery. [0003] Since such polyolefin-based fibers are inferior in hydrophilicity wit...

Claims

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Application Information

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IPC IPC(8): H01M10/24H01M2/16
CPCY02E60/124H01M10/30H01M50/411H01M50/44Y02E60/10Y02P70/50
Inventor 川胜徹稻石一弘服部洋平高桥则雅
Owner SHONAN CORUN ENERGY
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