Electrochemical Hydrogen-Storage Properties of La0.78Mg0.22Ni2.67Mn0.11Al0.11Co0.52-M1Ni3.5Co0.6Mn0.4Al0.5 Composites

被引：3
作者：
Huang, Hongxia [1 ,2 ]
Li, Guohui [1 ]
Zhuang, Shuxin [3 ]
机构：
[1] Guilin Univ Technol, Coll Chem & Bioengn, Guangxi Sci Expt Ctr Min Met & Environm, Guilin 541004, Peoples R China
[2] Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China
[3] Xiamen Univ Technol, Sch Mat Sci & Engn, Xiamen 361024, Peoples R China
来源：
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2013年 / 24卷 / 08期
关键词：
AB(3)-type alloy; composite electrode material; cycle stability; ALLOYS; NI; PERFORMANCES; ELECTRODE; CO;
D O I：
10.5935/0103-5053.20130169
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
For improving the electrochemical properties of nonstoichiometric AB(3)-type La0.78Mg0.22Ni2.67Mn0.11Al0.11Co0.52 alloy as negative electrode of Ni-MH battery, its related composites La0.78Mg0.22Ni2.67Mn0.11Al0.11Co0.52-x wt.% M1Ni(3.5)Co(0.6)Mn(0.4)Al(0.5) (x = 0, 10, 20, 30) were prepared. Analysis by X-ray diffractometry (XRD) revealed that the composites consist mainly of LaNi5 and La2Ni7 phases. Despite the small decrease in the maximum discharge capacity, the cycle performance was significantly enhanced. Linear polarization (LP), anodic polarization (AP) and potential step discharge experiments revealed that the electrochemical kinetics increases first and then decreases with increasing x.
引用
收藏
页码：1339 / 1344
页数：6
相关论文
共 18 条
[1]   Electrochemical hydrogen storage properties of La0.7Mg0.3Ni3.5-Ti0.17Zr0.08V0.35Cr0.1Ni0.3 composites [J].
Chu, Hai-Liang ;
Qiu, Shu-Jun ;
Sun, Li-Xian ;
Zhang, Yao ;
Xu, Fen ;
Zhu, Min ;
Hu, Wang-Yu .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (02) :755-761
[2]   Microstructure and electrochemical hydrogen storage characteristics of La0.67Mg0.33CaxNi2.75Co0.25 (x=0-0.15) electrode alloys [J].
Dong, Zhenwei ;
Wu, Yaoming ;
Ma, Liqun ;
Wang, Lidong ;
Shen, Xiaodong ;
Wang, Limin .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (04) :3050-3055
[3]   Effect of commercial AB5 alloy addition on the electrochemical properties of MI-Mg-Ni-based hydrogen storage alloys [J].
Hu Lin ;
Han Shumin ;
Li Jinhua ;
Zhu Xilin ;
Li Yuan .
RARE METALS, 2008, 27 (04) :429-433
[4]   The electrochemical properties of MgNi-x wt% TiNi0.56Co0.44 (x=0, 10, 30, 50) composite alloys [J].
Huang, Hongxia ;
Huang, Kelong ;
Chen, Dongyang ;
Liu, Suqin ;
Zhuang, Shuxin .
JOURNAL OF MATERIALS SCIENCE, 2010, 45 (04) :1123-1129
[5]   Effects of substitution with foreign metals on the crystallographic, thermodynamic and electrochemical properties of AB(5)-type hydrogen storage alloys [J].
Iwakura, C ;
Oura, T ;
Inoue, H ;
Matsuoka, M .
ELECTROCHIMICA ACTA, 1996, 41 (01) :117-121
[6]   ELECTROCHEMICAL IMPEDANCE AND DETERIORATION BEHAVIOR OF METAL HYDRIDE ELECTRODES [J].
KURIYAMA, N ;
SAKAI, T ;
MIYAMURA, H ;
UEHARA, I ;
ISHIKAWA, H ;
IWASAKI, T .
JOURNAL OF ALLOYS AND COMPOUNDS, 1993, 202 :183-197
[7]   The effect of Nd content on the electrochemical properties of low-Co La-Mg-Ni-based hydrogen storage alloys [J].
Li, Yuan ;
Han, Shumin ;
Li, Jinhua ;
Zhu, Xilin ;
Hu, Lin .
JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 458 (1-2) :357-362
[8]   Study on phase structure and electrochemical properties of Ml1-xMgxNi2.80Co0.50Mn0.10Al0.10 (x=0.08, 0.12, 0.20, 0.24, 0.28) hydrogen storage alloys [J].
Li, Yuan ;
Han, Shumin ;
Li, Jinhua ;
Hu, Lin .
ELECTROCHIMICA ACTA, 2007, 52 (19) :5945-5949
[9]  
Liu YF, 2003, RARE METAL MAT ENG, V32, P942
[10]   Determination of chemical diffusion coefficients in metal hydride particles with a microelectrode technique [J].
Nishina, T ;
Ura, H ;
Uchida, I .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (04) :1273-1277
12