Influence of Preparation Technology on the Performance of La_0.80Mg_0.20Ni_3.75 Alloy Electrode AITranslate

1DongX P, Lv F X, Yang L Y,et al. Influence of spark plasma sintering temperature on electrochemical performance of La0.80 Mg0. 20 Ni3.75 alloy[J]. Materials Chemistry and Physics, 2008,112 (2) : 596-602.

2Zhao X J,Li Q,Chou K C,etal. Effect of Co substitution for Ni and magnetic-heat treatment on the structures and electrochemical properties of La-Mg-Ni-type hydrogen storage alloys[J]. J Alloys Compd, 2009,473 ( 1-2 ) : 428- 432.

3Chu H L,Qiu S J,Sun L X,etal. Electrochemical hydrogen storage properties of La0.7 Mg0.3 Ni3.5 -Ti0. 17 Zr0.08 V0. 32 Cr0.1 Ni0. 3 composites[J]. Int J Hydrogen Energy, 2008,33(2) : 755-761.

4Si T Z,Zhang Q A,Liu N. Investigation on the structure and electrochemical properties of the laser sintered La0.7 Mg0.3 Ni3.5 hydrogen storage alloys[J]. Int J Hydrogen Energy,2008,33(6):1 729-1 734.

5Evgenij B, Macdonald J R. Impedance Spectrocopy Theory, Experiment and Application [ M]. New Jersey: John Wiley & Sons Incorporation,2005. 213.

6Dong X P,Zhang Y H,Wang X L,etal. Investigation on microstructures and electrochemical performances of La0.75 Mg0. 25 Ni3.5 Cox (x = 0 - 0.6 ) hydrogen storage al loys[J]. Int J Hydrogen Energy, 2007,32(18):4 949-4 956.

4添加Zn提高热变形NdFeB磁体的磁性[J].金属功能材料,2017,24(1):43-43.

10董小平,耿晓光,杨丽颖,石宪,路西超,钟旸.La_(0.75)Mg_(0.25)Ni_(3.47)Co_(0.2)Al_(0.03)储氢合金电极失效研究[J].稀有金属与硬质合金,2011,39(3):25-30. 被引量：3

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Chinese Library Classification Number:TG146.45[金属学及工艺—金属材料]

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La0.80Mg0.20Ni3.75 alloy was prepared by intermediate frequency induction vacuum melting （IM） or spark plasma sintering （SPS）. The results from XRD show that both the alloys prepared by the two technologies contain the main phases of LaNi5 and （La, Mg）2Ni7. In addition, the alloy from IM technology （IMLa alloy） contains （La, Mg）Ni3 phase,and the alloy from SPS technology （SPSLa alloy） contains Ni and La2Mg17 phases. The results of electrochemical performance test indicate that IMLa alloy is of higher discharge capacity, loss angle and limiting current density as anode materials of Ni-MH batteries,but the cycle performance of SPSLa alloy is better. SPSLa alloy is of fine grains, homogeneous mierostructure and dis- persive Ni and La2Mg17 phases,so its electrode shedding degree weakens and cycle stability improves.