Effects of Annealing Treatment on the Charge/Discharge Performance of RE-Mg-Ni-based Alloy Electrode AITranslate

1Pan H G,Jin Q W,Gao M X,etal. Effect of the cerium content on the structural and electrochemical properties of the La0.7-x Cex Mg0.3 Nia 87 Mn0.1 Coo 525 (x = 0 0.5 ) hydrogen storage alloys[J]. J Alloys Compd, 2004,373 : 237-245.

2Zhang X B, Sun D Z, Yin W Y, et al. Crystallographic and electrochemical characteristics of La0.7 Mg0. a Ni3.-x (A10.5 Moo. 5 ) (x= 00.8) hydrogen storage alloys[J]. Journal of Power Sources,2006,154(1):290-297.

3Dong X P,LiJ F X,Yang L Y,et al. Influence of spark plasma sintering temperature on electrochemical per-formance of Lao. 80 Mgo. 20 Nia. 7 alloy[J]. Materials Chem istry and Physics, 2008,112 : 596-602.

4Zhang F L,Luo Y C,Chen J P,et al. Effect of annealing treatment on structure and electrochemical properties of La0.67 Mg0. aa Nias Co0. s alloy electrodes [J]. Journal of Power Sources, 2005,150 : 247-254.

5Peng C H,Zhu M. Microstructure and hydrogen storage -properties of a multi-phase Mlo.7 Mgo.a Nia.z hydrogen storage alloy[J]. J Alloys Compd, 2004,375 : 324-329.

6Pan H G,Chen N,Gao M X,et al. Effects of annealing temperature on structure and the electrochemical proper- ties of La0.7 Mg0. a Nis. 4s Coo. 75 Mn0.1 Alo. 2 hydrogen stor age alloy[J]. J Alloys Compd, 2005,397 : 306-312.

9长崎诚三 平林真.二元合金状态图集[M].北京:冶金工业出版社,2004..

10Kisi E H,Buckley C E,Gray E M. The hydrogen acti- vation of LaNi5 [J]. J Alloys and Comp, 1992,185 (2) 369-384.

7张灏,汪保国,王丹,眭艳辉,何丹农,夏保佳.Mn元素对储氢合金(La_(0.78)Mg_(0.22))(Ni_((0.9-x))Co_(0.1)Mn_x)_(3.5)的结构及电化学性能的影响[J].上海金属,2010,32(2):16-19. 被引量：1

8任可,雷永泉,陈立新,张庆安,王启东.混合稀土贮氢合金(Ml)_x(Ni_(3.8)Co_(0.75)Mn_(0.4)Ti_(0.05))相结构与性能的研究[J].稀有金属材料与工程,2000,29(4):235-238. 被引量：3

Basic Information:

DOI：

Chinese Library Classification Number:TG139.7[一般工业技术—材料科学与工程]

Citation Information:

Charge/discharge performance of La0.75 Mg0. 25 Ni3.44 Co0. 2 Al0.03 Ti0.03 cast alloy or annealed alloys was investigated. The results show that with annealing temperature rising, the alloy charge/discharge potential difference decreases at first and then increases during electrode activation,contrary to the discharge efficiency. All the annealed alloys have higher specific discharge capacity than the cast alloy, and the alloy annealed at 1 223 K has obvious advantage. The maximum specific discharge capacity of the cast alloy or annealed alloys decreases with charge/discharge current density increasing. The cycling performance of annealed alloys is improved,attributed to phase composition change of the alloy,microstructure homogeneity improvement and content increase of hydrogen-absorbing element on particle surface.