| 发明名称 |
POSITIVE ELECTRODE FOR SECONARY BATTERY WITH ALKALINE ELECTROLYTE |
| 摘要 |
A positive collector electrode with an active material which comprises a double hydroxide of the general formula [M2+(1-x)Fe3+x(OH)2]x+[(x/n)Xn-, yH2O]x- in which the transient parameter is 0.05</=x</=0.4, preferably 0.2, M2+ is preferably Ni2+, and Xn- is an anion species, shows a remarkable improvement in electrical behavior as compared to analogous double hydroxides in which Xn- is SO42-, NO3- or CO32-. These electrodes, known as siderophile electrodes, exhibit resistance to iron contamination if Xn- is formed at least partly by PO43- or HPO42-. This improvement is manifested in a constancy of the specific discharge capacity at a high level over many cycles during charge/discharge operation as compared to a Cd/Cd(OH)2 electrode. The process for producing the electrode is also disclosed. |
| 申请公布号 |
EP0336245(A3) |
申请公布日期 |
1989.11.08 |
| 申请号 |
EP19890105340 |
申请日期 |
1989.03.25 |
| 申请人 |
VARTA BATTERIE AKTIENGESELLSCHAFT |
发明人 |
GLEMSER, OSKAR, PROF.DR.DRS.;BUSS, DIETER H., DR.;BAUER, JURGEN, DR.;LOW, HELGA |
| 分类号 |
C01B25/45;H01M4/28;H01M4/32;H01M4/36;H01M4/52;H01M4/66 |
主分类号 |
C01B25/45 |
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