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Hydrogen storage electrode, nickel electrode and alkaline storage battery

A nickel electrode, nickel hydroxide technology, applied in the direction of alkaline storage battery, alkaline storage battery electrode, airtight storage battery, etc., can solve the problems of increased production cost, reduced utilization rate of active materials, reduced high-rate discharge performance, etc. The effect of improving the utilization rate and improving the corrosion resistance

Inactive Publication Date: 2004-10-13
GS YUASA INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method (1) has such problems that the utilization rate of the active material is lowered at low temperature and the high-rate discharge performance is lowered.
Also, when the amount of cobalt is excessively increased, the method (2) has troubles such as a decrease in discharge voltage and an increase in production cost

Method used

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  • Hydrogen storage electrode, nickel electrode and alkaline storage battery
  • Hydrogen storage electrode, nickel electrode and alkaline storage battery
  • Hydrogen storage electrode, nickel electrode and alkaline storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0103] (Example 1)

[0104] This example concerns a hydrogen storage electrode.

[0105] [Electrode production]

[0106] Industrial Mm (a rare earth element alloy containing cerium), which is a complex of rare earth elements La, Ce, Pr, and Nd, and Ni, Al, Co, and Mn are weighed according to a specified amount. The composition MmNi is produced under an inert atmosphere with a high-frequency furnace 3.8 Al 0.3 co 0.7 mn 0.2 The alloy is called Alloy X.

[0107] Mechanically grind Alloy X and mix the resulting powder with 0.5 wt% CeO using a mortar 2 The powder is mixed well and a thickener is added to form a paste. This paste was filled in a nickel fiber base, dried and pressed to produce a hydrogen storage electrode, referred to as Example Electrode 1A.

[0108] On the other hand, except for Gd 2 o 3 、Er 2 o 3 and Yb 2 o 3 Instead of CeO 2 Also, example electrodes 1B, 1C and 1D were fabricated in the same manner as example electrode 1A.

[0109] In addition, in...

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PUM

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Abstract

This invention relates to a hydrogen absorbing electrode, in which a rare earth element having a basicity weaker than that of La is mixed to a hydrogen absorbing alloy or contained in it for serving as a component element. The invention relates to a nickel electrode, in which a rare earth element is mixed to a nickel hydroxide or contained in it as a solid solution. The invention further relates to an alkaline storage battery, in which a rare earth element is coated on a surface of a nickel electrode or a surface of a separator.

Description

[0001] This application is a divisional application of: [0002] Invention title: "Hydrogen Storage Electrode, Nickel Electrode and Alkaline Storage Battery" [0003] The filing date is: September 25, 1996 [0004] The application number is: 96191504.8 technical field [0005] The invention relates to a hydrogen storage telegraph and a nickel electrode for an alkaline accumulator, and also relates to an alkaline accumulator. Background technique [0006] Recently, nickel hydride secondary batteries have attracted attention due to their high energy density and low pollution compared with existing nickel-cadmium secondary batteries. Also, many researches and developments have been conducted for use as power sources for portable devices, electric vehicles, and the like. In nickel hydride storage batteries, a hydrogen storage electrode of a hydrogen storage alloy capable of reversibly absorbing and releasing hydrogen is used as a negative electrode, and a nickel electrode usi...

Claims

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Application Information

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IPC IPC(8): H01M4/24H01M4/32H01M4/38H01M4/52H01M10/26H01M10/34H01M50/443H01M50/451H01M50/457
CPCY02E60/124H01M4/383H01M10/345H01M4/52H01M2/1686Y10S420/90H01M10/26H01M4/242H01M2/16H01M4/32Y02E60/10H01M50/457H01M50/451H01M50/443H01M4/24
Inventor 古川健吾田中俊树中川裕江松村勇一黑葛原实大西益弘三宅登绵田正治押谷正彦
Owner GS YUASA INT LTD
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