Electrochemical hydrogenation of nanocrystalline face-centered cubic Co powder

被引：29
作者：
Chung, S. -R. [1 ]
Wang, K. -W. [2 ]
Teng, M. -H. [3 ]
Perng, T. -P. [1 ,4 ,5 ]
机构：
[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan
[2] Natl Cent Univ, Inst Mat Sci & Engn, Chungli 320, Taiwan
[3] Natl Taiwan Univ, Dept Geosci, Taipei 106, Taiwan
[4] Yuan Univ, Dept Chem Engn & Mat Sci & Engn, Chungli 320, Taiwan
[5] Yuan Univ, Fuel Cell Res Ctr, Chungli 320, Taiwan
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 03期
关键词：
Electrochemical hydrogenation; Co; Discharge capacity; FCC; HCP; METAL HYDRIDE ELECTRODES; STORAGE ALLOYS; CRYSTALLINE CO; PARTICLES; REDUCTION; BEHAVIORS; BATTERIES; LITHIUM; SI;
D O I：
10.1016/j.ijhydene.2008.11.073
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanocrystalline face-centered cubic (FCC) Co powder encapsulated within graphite layers was fabricated by an arc discharge method. Its electrochemical hydrogenation properties were investigated and compared with those of the hexagonal close packed (HCP) structure. Both exhibited a similar stabilized discharge capacity of approximately 350 mAh/g that can be attributed to the CoHx/Co reaction. During the cyclic charge/discharge, transition between HCP-Co and FCC-Co took place. Graphite encapsulation was beneficial to the cycle stability of the FCC powder. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1383 / 1388
页数：6
相关论文
共 23 条
  • [1] On the isomorphous phase transformation in the solid fcc solutions Co-H at high pressures
    Antonov, VE
    Antonova, TE
    Baier, M
    Grosse, G
    Wagner, FE
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 239 (02) : 198 - 202
  • [2] Electrochemical hydrogen storage behaviors of ultrafine Co-P particles prepared by direct ball-milling method
    Cao, Yuliang
    Zhou, Wenchao
    Li, Xiaoyan
    Ai, Xinping
    Gao, Xueping
    Yang, Hanxi
    [J]. ELECTROCHIMICA ACTA, 2006, 51 (20) : 4285 - 4290
  • [3] Electrochemical reduction and hydrogenation of co oxides
    Chung, S-R.
    Wang, K-W.
    Sheen, S-R.
    Yeh, C-T.
    Perng, T-P.
    [J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 2007, 10 (07) : A155 - A158
  • [4] Electrochemical hydrogenation of crystalline Co powder
    Chung, SR
    Wang, KW
    Perng, TP
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (06) : A1128 - A1131
  • [5] A descriptive model linking possible formation mechanisms for graphite-encapsulated nanocrystals to processing parameters
    Elliott, BR
    Host, JJ
    Dravid, VP
    Teng, MH
    Hwang, JH
    [J]. JOURNAL OF MATERIALS RESEARCH, 1997, 12 (12) : 3328 - 3344
  • [6] Lattice expansion for MmNi4.30-xCoxAl0.30Mn0.40(x=0, 0.75) studied by in situ X-ray diffraction
    Endo, Daisuke
    Sakaki, Kouji
    Akiba, Etsuo
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2007, 32 (15) : 3435 - 3441
  • [7] Electrochemical behaviour of intermetallic-based metal hydrides used in Ni/metal hydride (MH) batteries: a review
    Feng, F
    Geng, M
    Northwood, DO
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2001, 26 (07) : 725 - 734
  • [8] Effects of amorphous CoB on the structural and electrochemical characteristics of MgNi alloy
    Feng, Yan
    Jiao, Lifang
    Yuan, Huatang
    Zhao, Ming
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2007, 32 (14) : 2836 - 2842
  • [9] Effect of synthesis method on the structure and electrochemical behaviour of Co-Si particles
    He, Guang
    Jiao, Lifang
    Yuan, Huatang
    Zhang, Yunyun
    Zhang, Yanhui
    Wang, Yijing
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2007, 32 (15) : 3416 - 3419
  • [10] The development of hydrogen storage alloys and the progress of nickel hydride batteries
    Hong, KC
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2001, 321 (02) : 307 - 313
123