A novel active material of hydrogen storage alloy electrode

• Main Authors: CHEN, YOUXIAO 608-SECOND BUILDING, WANG, GENSHI, YUAN, HUATANG, JIN, YUFENG, ZHOU, ZUOXIANG 12-2 DONG, CAO, XUEJUN, SONG, DEYING, CHEN, JUN, ZHANG, YUNSHI
• Format: Patent
• Language: English; French; German
• Published: 19.01.1994
• Edition: 5
• Subjects: ALLOYS; BASIC ELECTRIC ELEMENTS; CHEMISTRY; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PLASMA TECHNIQUE; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

This invention relates to a novel active material of hydrogen storage alloy electrode with the composition of formula MmNi5-x-y-zZnxQyRz, in which Q=Al, Ca and Sr, R=Li, Na and K, 0<x</=1, 0<y</=0.8 and 0<z</=1. In the said alloy powder, an alloy phase of zinc is formed between the surface coating and the alloy base after treatment of the alloy powder by surface plating. As a result, the electrochemical capacity as well as the life of the hydrogen storage alloy electrode formed is increased significantly while the cost is greatly reduced with the substitution of Zn for Co.