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	AB_5型球形合金粉的表面处理研究; Study of surface treatment for gas-atomized AB(5) alloy powder
	宏存茂 ; 杨敬武 ; 杨勇 ; 宏亮
	1998
关键词	表面处理 金属-氢化物电极 surface treatment metal hydride electrode
英文摘要	由雾化（Gas－atomization）技术制备的AB5型球形合金粉，作为镍氢电池负极材料具有很多优点：粉粒呈球状便于在多孔基片内装填；耐压耐磨性好；抗碱能力强且不易解胶．但它的电化学初活性差，难于活化．有碍电池中的应用．采用适宜的氧化剂（铜盐水溶液）处理，使球粒表面形成一个富铜、富镍亚层，显著地改善了合金粉的电化学活性．经处理的MlNi3.8CO0.5Mn0.3Al0.4球形合金粉，仅3次充放电循环其放电量便可达到240mA·h·g-1；而未经处理的同一合金粉即便经6次充放电循环其放电量也只有103mA·h·g-1．; The AB(5) alloy powders prepared by gas-atomization have many advantages: spherical particles convenient for packing, high press and wear resistance, enhanced corrosion and dispersion resistance. But lack of electrochemical activity is a barrier for use in Ni-MH battery. An activation method have been carried out in our laboratory. The gas-atomized powder was treated by an oxidizer (a solution of copper salt) to form a Cu and Ni-rich, layer on the surface of the particles. The activity of the gas-atomized powder was greatly improved. For the treated powder MINi3.8Co0.5Mn0.3Al0.4, it was found that the discharge capacity after 3 cycles of charge-discharge reached an ideal value 240 mA . h . g(-1), but only 103 mA . h . g(-1) for the non-treated powder.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000074858400011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科学引文数据库(CSCD); 4; 02; 154-157; 14
语种	中文
出处	知网 ; SCI
出版者	物理化学学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/78618]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	宏存茂,杨敬武,杨勇,等. AB_5型球形合金粉的表面处理研究, Study of surface treatment for gas-atomized AB(5) alloy powder. 1998-01-01.

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