Acta Metall Sin  1996, Vol. 32 Issue (11): 1194-1198    DOI:

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RELATIONSHIP BETWEEN CRYSTAL CHARACTERISTICS AND ELECTROCHEMICAL PROPERTIES OF Zr BASED HYDROGEN STORAGE ALLOY

YANG Xiaoguang; LEI Yongquan; ZHANG Wenkui; ZHU Guangming; WANG Qidong(Zhejiang University; Hangzhou 310027)

YANG Xiaoguang; LEI Yongquan; ZHANG Wenkui; ZHU Guangming; WANG Qidong(Zhejiang University; Hangzhou 310027). RELATIONSHIP BETWEEN CRYSTAL CHARACTERISTICS AND ELECTROCHEMICAL PROPERTIES OF Zr BASED HYDROGEN STORAGE ALLOY. Acta Metall Sin, 1996, 32(11): 1194-1198.

Abstract References Related Articles Recommended Metrics Download:  PDF(379KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The electrochemical discharge capacity is in close relation with its crystal characteristics of AB2 type Laves phase hydrgoen storage alloy ZrCr0.4 Mn0.2V0.1Ni0.3, its capacity decreased shapoly from 324 mA · h / g to 25 mA · h / g after amorphization by mechanical milling of the crystalline (as-cast) alloy with stainless steel balls. Hydrogen atoms stored in the Zr2B2(B=Cr, Ni or V) tetrahedral interstitial sites of as-cast alloy lattice mainly contributed to its electrochemical capacity. However, for the amopohous alloy with the same composition the contribution to the electrochemical capacity is mainly resulted from the hydrogen atoms in Zr3B and Zr4 sites. It is believed that only haif sites in the crystilline or amorphous alloys can adsorb and desorb hydrogen atoms reversely. Extra energy induced during milling process can reduce the potential of electrochemical discharging of hydrogen reaction. Correspondent: YANG Xiaoguang, lecturer, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 Key words:  Zr based hydrogen storage alloy      crystal structure      electrochemical capacity      Received:  18 November 1996      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1996/V32/I11/1194 1OvshinskySR,FetcenkoMA,RossJ．Science,1993;260(9):1762SawaH,WakaoS．MaterTransJIM,1990;31:4873MoriwakiY,GamoT,ShintaniA,IwakiT．DenkiKagaku,1989;57:4884HuotJ,AjubaE,OsuraT．DemkiKagakn,1992;61:14245VenkatesanS,ReichmanB,FetcenkoMA．USPat,4728586,19886LeiYQ,YangXG,WangQD,WuJ．JAlloysCompds,1995;231:5737YangXG,LeiYQWangQD,WuJ．TransNonferrousMetsSocChina,1995;5:618YuJY,LeiYQ,ChenCP,WuJ,WangQD．JAlloysCompds,1995;231:5789MiyamuraH,KuriyamaN,SakaiT,IwasakiT．JLess-CommonMet,1991;172-174:120510吕光烈,刘顺洪,陈林深,吴红丽,雷永泉,于进云,杨晓光,王启东．金属学报,1996;32:77911HarrisJH,CurtinWA,TenhoverMA．PhysRev,1987;36B:578412RudmanPS,SandrockGD．AnnRevMaterSci,1982;12:271 [1] Ying LI,Chao SUN,Jun GONG. 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