| 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. |
| 申请人 |
VARTA BATTERIE AG, 3000 HANNOVER, DE |
发明人 |
GLEMSER, OSKAR, PROF. DR.E.H. DR.H.C.;BUSS, DIETER H., DR., 3400 GOETTINGEN, DE;BAUER, JUERGEN, DR., 3200 HILDESHEIM, DE;LOEW, HELGA, DIPL.-CHEM., 3400 GOETTINGEN, DE |
