Browse > Article

Surface Modification of $AB_2$ Type Hydrogen Storage Alloys by Ball Milling for Ni-MH Battery  

Moon, Hong-Gi (Dept. of Materials Sci. & Eng., Chonnam National University)
Park, Choong-Nyeon (Dept. of Materials Sci. & Eng., Chonnam National University)
Yoo, Joung-Hyun (Dept. of Materials Sci. & Eng., Chonnam National University)
Park, Chan-Jin (Dept. of Materials Sci. & Eng., Chonnam National University)
Choi, Jeon (Dept. of Advanced materials Eng., Hanlyo University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.17, no.4, 2006 , pp. 418-424 More about this Journal
Abstract
In order to improve the activation properties of the $AB_2$ type hydrogen storage alloys for Ni-MH battery, the alloy surface was modified by employing high energy ball milling. The $Zr_{0.54}Ti_{0.45}V_{0.54}Ni_{0.87}Cr_{0.15}Co_{0.21}Mn_{0.24}$ alloy powder was ball milled for various period by using the high energy ball mill. As the ball milling time increased, activation of the $AB_2$ type composite powder electrodes were enhanced regardless of additives. When the ball milling time was small discharge capacities of the $AB_2$ type composite powder electrodes increased with the milling time. On the other hand for large milling time it decreased with increasing milling time. The maximum discharge capacity was obtained by ball milling for 3-4 min.
Keywords
hydrogen storage alloy; high energy ball milling; Ni-Mh battery; surface modification;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Good Well, P. D. J. Less-Common Metals., Vol. 104, 1984, p. 159   DOI   ScienceOn
2 Park, J. M. et al., Mat. Res. Bull., Vol. 22, 1987, p. 455   DOI   ScienceOn
3 H. Tamura, et al., J. Less-Common Metals., Vol. 89, 1983, p. 567   DOI   ScienceOn
4 Oh S. U. et al., J. Korean Hydro-Ene. Soc., Vol. 8, 1997, p. 181
5 Sandrock, G. D. Proc. 2nd WHEC, Zurich, August, 1978, Pergamon, Oxford, 1625
6 Noh, H. et al., J. Electrochem., Soc., to be published
7 Lee, K. M. et al., J. of Alloys and Compounds., Vol. 241, 1996, p. 153   DOI
8 D. R. Maurice et al., Metall. Trans. A., 21A, 1990, p. 289
9 T. Kohno, et al., J. Electrochem. Soc., Vol. 143, No. 9, 1996
10 H.Ishikawa et al., J. Electrochem., Soc., Vol. 137, No. 3, 1990, p.795   DOI
11 S. Wakao, et al., J. Less-Common Metals., Vol. 104, 1984, p. 385   DOI   ScienceOn
12 H. Noh, et al., J. Korean Hydro-Ene. Soc., Vol. 8. No. 1, 1997
13 Cohen, R. L. et al., J. Less-Common Metals., Vol. 95, 1983, p. 17   DOI   ScienceOn