JPH0514382B

JPH0514382B

PURPOSE:To increase the utilization of active material, and obtain high performance and steady capacity by adding 3-20wt% of cobalt hydroxide powder having green color and hexagonal crystal structure to active material powder mainly comprising nickel hydroxide. CONSTITUTION:Metal cobalt is dissolved...

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1. Verfasser: OSHITANI MASAHIKO
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator OSHITANI MASAHIKO
description PURPOSE:To increase the utilization of active material, and obtain high performance and steady capacity by adding 3-20wt% of cobalt hydroxide powder having green color and hexagonal crystal structure to active material powder mainly comprising nickel hydroxide. CONSTITUTION:Metal cobalt is dissolved in sulfuric acid solution or nitric acid solution and a compound is deposited from a neutral or weak alkaline region. This compound is cobalt hydroxide having green color and hexagonal crystal structure. 10% cobalt hydroxide and 90% nickel hydroxide power are mixed, and water and carboxymethylcellulose are added thereto to obtain a paste-like mixture. The paste is filled in a nickel fiber sinter having a porosity of 95% and a thickness of 1.5mm, and dried, then pressed to obtain a 0.7mm thick positive plate. As shown in the figure, the positive electrode I containing cobalt hydroxide has higher utilization of active material and shorter discharge time compared with a positive plate II containing beta-type cobalt hydroxide.
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CONSTITUTION:Metal cobalt is dissolved in sulfuric acid solution or nitric acid solution and a compound is deposited from a neutral or weak alkaline region. This compound is cobalt hydroxide having green color and hexagonal crystal structure. 10% cobalt hydroxide and 90% nickel hydroxide power are mixed, and water and carboxymethylcellulose are added thereto to obtain a paste-like mixture. The paste is filled in a nickel fiber sinter having a porosity of 95% and a thickness of 1.5mm, and dried, then pressed to obtain a 0.7mm thick positive plate. 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CONSTITUTION:Metal cobalt is dissolved in sulfuric acid solution or nitric acid solution and a compound is deposited from a neutral or weak alkaline region. This compound is cobalt hydroxide having green color and hexagonal crystal structure. 10% cobalt hydroxide and 90% nickel hydroxide power are mixed, and water and carboxymethylcellulose are added thereto to obtain a paste-like mixture. The paste is filled in a nickel fiber sinter having a porosity of 95% and a thickness of 1.5mm, and dried, then pressed to obtain a 0.7mm thick positive plate. As shown in the figure, the positive electrode I containing cobalt hydroxide has higher utilization of active material and shorter discharge time compared with a positive plate II containing beta-type cobalt hydroxide.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>ELECTRICITY</subject><subject>PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1993</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOD2CvAwMDU0MbYwcuJhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFIOpyMjIlSBAB5Zhw5</recordid><startdate>19930224</startdate><enddate>19930224</enddate><creator>OSHITANI MASAHIKO</creator><scope>EVB</scope></search><sort><creationdate>19930224</creationdate><title>JPH0514382B</title><author>OSHITANI MASAHIKO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH0514382BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1993</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>ELECTRICITY</topic><topic>PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</topic><toplevel>online_resources</toplevel><creatorcontrib>OSHITANI MASAHIKO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>OSHITANI MASAHIKO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>JPH0514382B</title><date>1993-02-24</date><risdate>1993</risdate><abstract>PURPOSE:To increase the utilization of active material, and obtain high performance and steady capacity by adding 3-20wt% of cobalt hydroxide powder having green color and hexagonal crystal structure to active material powder mainly comprising nickel hydroxide. CONSTITUTION:Metal cobalt is dissolved in sulfuric acid solution or nitric acid solution and a compound is deposited from a neutral or weak alkaline region. This compound is cobalt hydroxide having green color and hexagonal crystal structure. 10% cobalt hydroxide and 90% nickel hydroxide power are mixed, and water and carboxymethylcellulose are added thereto to obtain a paste-like mixture. The paste is filled in a nickel fiber sinter having a porosity of 95% and a thickness of 1.5mm, and dried, then pressed to obtain a 0.7mm thick positive plate. As shown in the figure, the positive electrode I containing cobalt hydroxide has higher utilization of active material and shorter discharge time compared with a positive plate II containing beta-type cobalt hydroxide.</abstract><oa>free_for_read</oa></addata></record>
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title JPH0514382B
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