用铸造及快淬工艺制备了La-Mg-Ni系(PuNi3型)贮氢合金La2Mg(Ni0.85Co0.15)9Bx(x=0、0.1、0.2),分析测试了铸态及快淬态合金的微观结构与电化学性能,研究了硼及快淬工艺对合金微观结构及电化学性能的影响.结果表明,铸态合金具有多相结构,主相包括 (La, Mg)Ni3相和LiNi5相,残余相为一定量的LaNi2相和微量的Ni2B相,经快淬处理后Ni2B相消失,并且其它相的相对量随淬速的变化而变化.硼的加入提高了铸态及快淬态合金的循环稳定性,但使合金的容量下降.不含硼合金的容量随淬速的增加而单调减小,含硼合金的容量随淬速变化有一个极大值.合金的循环寿命随淬速的增加而增加,铸态及快淬态合金均有优良的活化性能.
参考文献
[1] | Kohno T;Yoshida H;Kawashima F et al.[J].Journal of Alloys and Compounds,2000,311:5-7. |
[2] | Kadir K;Uehara I;Sakai T .[J].Journal of Alloys and Compounds,1997,257:115-121. |
[3] | Pan Hongge;Liu Yongfeng;Gao Mingxia et al.[J].Journal of Alloys and Compounds,2003,351:228-234. |
[4] | Zhang Yang-huan;Chen Mei-yan;Wang Xin-lin et al.[J].Journal of Power Sources,2004,125:273-279. |
[5] | Zhang Yang-huan;Chen Mei-yan;Wang Xin-lin et al.[J].Electrochimica Acta,2004,49:1161-1168. |
[6] | Li Ping;Wang Xin-lin;Zhang Yang-huan et al.[J].Journal of Alloys and Compounds,2003,353:278-282. |
[7] | Li Ping;Wang Xin-lin;Zhang Yang-huan et al.[J].Journal of Alloys and Compounds,2003,354:310-314. |
[8] | Li Y;Cheng Y T .[J].Journal of Alloys and Compounds,1995,223:6-12. |
[9] | Chartouni D;Meli F;Zuttel A et al.[J].Journal of Alloys and Compounds,1996,241:160-166. |
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