Enhancement of the electrochemical properties of rare earth-based alloy by doping with CoZnB alloy
Enhancement of the electrochemical properties of rare earth-based alloy by doping with CoZnB alloy
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CoZnB合金掺杂增强稀土基合金的电化学性能
DOI：
10.1016/j.ijhydene.2015.08.094
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发表时间：
2015-11
影响因子：
7.2
通讯作者：
Zhou Huaiying
中科院分区：
文献类型：
--
作者：
Huang Jianling;Qiu Shujun;Chu Hailiang;Zou Yongjin;Xiang Cuili;Zhang Huanzhi;Xu Fen;Sun Lixian;Ouyang Liuzhang;Zhou Huaiying
With the purpose of improving the electrochemical hydrogen storage properties of the alloys containing rare earth elements, an amorphous CoZnB was introduced into a La0.7Mg0.3Ni3.5alloy to form a novel composite by ball milling. Electrochemical measurements demonstrated that both the high-rate dischargeability (HRD) and the maximum discharge capacity (Cmax) of the composite electrodes were significantly improved.Cmaxof the composite electrodes could reach 487.5 mAh/g, which is much higher than that of pristine La0.7Mg0.3Ni3.5alloy electrode (343.9 mAh/g). Moreover,HRDat a current density of 800 was increased to 93.1%. The electrochemical reaction kinetics was also investigated by linear polarization, anodic polarization, electrochemical impedance spectroscopy and potential-step discharge. It was found that, compared to pristine La0.7Mg0.3Ni3.5alloy electrode, doping with CoZnB could give rise to a decrease of exchange current density and an increase of hydrogen diffusion coefficient, limiting current density and charge-transfer resistance.
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影响因子：
6.6
作者：
Shen Xiangqian;Chen Yungui;Tao Mingda;Wu Chao-ling;Deng Gang
通讯作者：
Shen Xiangqian;Chen Yungui;Tao Mingda;Wu Chao-ling;Deng Gang
影响因子：
6.6
作者：
C. Iwakura;T. Oura;H. Inoue;M. Matsuoka
通讯作者：
C. Iwakura;T. Oura;H. Inoue;M. Matsuoka
粉末烧结LaNi5和LaMgNi4 La-Mg-Ni基复相合金的形成机理、相结构及电化学性能
影响因子：
7.2
作者：
Jingjing Liu;Junling Zhang;Jinding Wang;Shuqin Yang
通讯作者：
Shuqin Yang
影响因子：
3.9
作者：
N. Kuriyama;T. Sakai;H. Miyamura;I. Uehara;H. Ishikawa;T. Iwasaki
通讯作者：
N. Kuriyama;T. Sakai;H. Miyamura;I. Uehara;H. Ishikawa;T. Iwasaki
影响因子：
3.9
作者：
Ratnakumar, BV;Witham, C;Fultz, B
通讯作者：
Fultz, B