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Nickel series rechargeable battery and its producing method

A recharging and battery technology, which is applied in the manufacture of nickel storage batteries, alkaline storage batteries, battery electrodes, etc., can solve the problems of inability to prolong the charge and discharge cycle life, achieve excellent overcharge resistance, improve the utilization rate of active materials, and have high activity The effect of material utilization

Inactive Publication Date: 2002-03-13
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this rechargeable battery has the advantage of improved utilization of the cathode active material at the beginning of the charge-discharge cycle, it has the disadvantage that it is difficult to substantially improve the volume change (expansion and contraction) of the cathode active material layer, Therefore, the charge-discharge cycle life cannot be extended satisfactorily

Method used

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  • Nickel series rechargeable battery and its producing method
  • Nickel series rechargeable battery and its producing method
  • Nickel series rechargeable battery and its producing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0154] In this example, the following method was used to prepare the Figure 5 configured spiral-wound cylindrical rechargeable battery.

[0155] 1. Preparation of cathode:

[0156] (1) Preparation of nickel hydroxide powder:

[0157] The powdery nickel hydroxide material as the starting material can be prepared by the usual reaction crystallization method in the following manner.

[0158] Add ammonium sulfate to the specified amount of nickel sulfate aqueous solution. Under the condition of strong stirring, the sodium hydroxide aqueous solution was added dropwise into the nickel sulfate aqueous solution, while controlling its pH value to 11, and the nickel sulfate aqueous solution obtained a kind of precipitation. The resulting precipitate was washed with pure water and dried to obtain nickel hydroxide powder (particles) including spherical particles.

[0159] Use X-ray diffractometer RINT2000 (produced by Kabusiki Kaisha RIGAKU) to the nickel hydroxide powder sample that...

Embodiment 2

[0181] The operation of Example 1 was repeated except that Step 1-(2) and Step 1-(3) in Example 1 were carried out as follows, to obtain a spiral-wound type rechargeable battery.

[0182] Preparation of cathode electrode material:

[0183] The nickel hydroxide powder that obtains in embodiment 1 step 1-(1) is put together with rigid grinding ball and carries out in star ball mill grinding equipment, here, under argon atmosphere, when acceleration is 15G, to nickel hydroxide powder Grinding treatment was performed for 10 minutes to obtain a powder. The resulting powder was subjected to ultrasonic dispersion treatment in pure water, followed by drying to obtain amorphous nickel hydroxide powder (particles).

[0184] Use X-ray diffractometer RINT2000, carry out wide-angle X-ray diffraction analysis to the powder sample of generation, use the Kα-ray of Cu as radiation source, X-ray diffraction figure is shown in image 3 , which appears near the diffraction angle 2θ=19° as a dif...

Embodiment 3

[0201] The operation of Example 1 was repeated except that Step 1-(2) and Step 1-(3) in Example 1 were carried out as described below to obtain a spiral-wound type rechargeable battery.

[0202] Preparation of cathode electrode material:

[0203] 92% by weight of the nickel hydroxide powder obtained in step 1-(1) of Example 1, 6% by weight of cobalt monoxide powder and 2% by weight of yttrium oxide powder were mixed to obtain a powdery mixture . The resulting mixture was placed together with rigid grinding balls in a planetary ball mill where the powdery mixture was subjected to a grinding process for 10 minutes at an acceleration of 15 G in an argon atmosphere to obtain a powder. The resulting powder was subjected to ultrasonic dispersion treatment in pure water, followed by drying to obtain amorphous nickel hydroxide powder (particles) bonded with cobalt monoxide and yttrium oxide.

[0204] Use X-ray diffractometer RINT2000 to carry out wide-angle X-ray diffraction analysi...

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Abstract

A nickel-series rechargeable battery whose cathode active material comprising a material containing an amorphous phase-bearing nickel hydroxide particulate which in X-ray diffraction using K alpha -rays of Cu as a radiation source, has a diffraction peak of a (001) face appeared near a diffraction angle 2 theta = 19 DEG having a half-value width of more than 1.2 DEG and has a diffraction peak of a (101) face appeared near a diffraction angle 2 theta = 38 DEG having a half-value width of more than 1.5 DEG . A process for the production of said rechargeable battery is also provided.

Description

technical field [0001] The present invention relates to a rechargeable battery whose cathode mainly includes nickel hydroxide (this rechargeable battery is hereinafter referred to as a nickel-series rechargeable battery), and a method for preparing the above-mentioned nickel-series rechargeable battery. More specifically, the present invention relates to nickel series rechargeable batteries having high energy density, superior overcharge resistance, and extended cycle life, wherein the cathode comprises a hydrogen An active material of nickel oxide particles, which has an extended service life and a high active material utilization ("active material utilization" will hereinafter be referred to as "active material utilization"). The invention includes the preparation method of the nickel series rechargeable battery. Background technique [0002] In recent years, it has been speculated that the cause of the global warming of the earth is due to CO in the air 2 The so-called ...

Claims

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Application Information

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IPC IPC(8): C01G53/04B82Y30/00B82Y99/00H01M4/26H01M4/30H01M4/32H01M4/36H01M4/52H01M4/62H01M4/64H01M4/74H01M4/80H01M10/28H01M10/30H01M10/34
CPCY02E60/124H01M4/30H01M4/52H01M4/626H01M4/02H01M4/624H01M10/28H01M2004/021H01M4/364H01M4/32Y10T29/49108Y02E60/10Y02P70/50
Inventor 浅尾昌也川上综一郎
Owner CANON KK
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