Physical and electrochemical characteristics of nickel hydroxide as a positive material for rechargeable alkaline batteries
Tóm tắt
Nickel hydroxide is widely used as an active material in pasted-type nickel electrodes. Physical properties of several nickel hydroxide powders have been examined by laser diffraction, BET, X-ray diffraction, thermal analysis and SEM. Nickel hydroxide powder with a smaller crystalline size shows better charge-discharge cyclic characteristics. The chemical diffusion coefficients of the proton in the nickel hydroxide sample are measured by a current pulse relaxation method. Nickel hydroxide with a smaller crystalline size shows a higher proton diffusion coefficient, giving excellent cycling behaviour.
Tài liệu tham khảo
I. Matsumoto, M. Ikeyama, T. Iwaki and H. Ogawa, Denki Kagaku 54 (1986) 159.
I. Matsumoto, M. Ikeyama, T. Iwaki, Y. Umeo and H. Ogawa, ibid. 54 (1986) 164.
S. Basu and W. L. Worrell, Fast Ion Transport in Solids (edited by J. N. Mundy, P. D. Vashita and G. K. Shenoy), North-Holland, Amsterdam (1979) p. 149.
N. Kumagai, S. Tanifuji, T. Fujiwara and K. Tanno, Electrochim. Acta 37 (1992) 1039.
P. G. Dickens, S. J. Hibble and R. H. Jarman, J. Electron. Mater. 10 (1981) 999.
B. D. Cullity, ‘Elements of X-ray Diffraction’, Addison-Wesley, Reading, MA (1956).
J. M. Fernandez Rodriguez, J. Morales, J. L. Tirado, J. Mater. Sci. 21 (1986) 3668.
D. M. MacArthur, J. Electrochem. Soc. 117 (1970) 729.
C. Zhang and S. Park, ibid 134 (1987) 2966.
P. Oliva, J. Leonardi, J. F. Laurent, C. Delmas, J. J. Braconnier, M. Figlarz, F. Fievet and A. Guibert, J. Power Sources 8 (1982) 229.
K. I. Pandya, W. E. O'Grady, D. A. Corrigan, J. McBreen and R. W. Hohhman, J. Phys. Chem. 94 (1990) 21.