Abstract
While at low (4°C) temperatures, addition of ammonia to aqueous metal nitrate solutions induces the precipitation of α-nickel hydroxide and at high (25–65°C) temperatures, β-Ni(OH)2 is formed. The crystallinity of the product improves at higher temperatures of precipitation and the product obtained at 65°C is devoid of various disorders such as stacking faults, turbostraticity and interstratification. This provides a simple and efficient alternative to the hydrothermal synthesis of crystalline β-Ni(OH)2. The temperature induced control over phase selection provides direct experimental evidence for the metastability of α-nickel hydroxide. Crystalline β-Ni(OH)2 is, however, a poor electrode material for alkaline secondary cells and exhibits a capacity of only 75 ± 10 mAh/g, against the theoretically expected 289 mAh/g.
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References
Acharya R, Subbaiah T, Anand S and Das R P 2002 J. Power Sources 109 494
Barnard R, Randell C F and Tye F L 1981 Power sources (London: Academic Press) p. 409
Bernard M C, Cortes R, Keddam M, Takenuoti H, Bernard P and Senyarich S 1996 J. Power Sources 63 247
Cornilsen B C, Shan X and Loyselle P L 1990 J. Power Sources 29 453
Delmas C and Tessier C 1997 J. Mater. Chem. 7 1439
Dixit M, Subbanna G N and Kamath P V 1996 J. Mater. Chem. 6 1429
Falk S U and Salkind A J 1969 Alkaline storage batteries (New York: John Wiley & Sons)
Fievet F and Figlarz M 1975 J. Catal. 39 1350
Genin P, Delahaye-Vidal A, Portemer F, Tekaia-Elhsissen K and Figlarz M 1991 J. Solid State Inorg. Chem. 28 505
Greaves C and Thomas M A 1986 Acta Crystallogr. B42 51
Hui L, Yunchang D, Jiongliang Y and Zeyun W 1995 J. Power Sources 57 137
Jayashree R S and Kamath P V 1999 J. Appl. Electrochem. 29 449
Jayashree R S, Kamath P V and Subbanna G N 2000 J. Electrochem. Soc. 147 2029
McHenry E J 1967 Electrochem. Technol. 5 275
Rajamathi M, Kamath P V and Seshadri R 2000 J. Mater. Chem. 10 503
Ramesh T N, Jayashree R S and Kamath P V 2003a Clays & Clay Miner. 51 570
Ramesh T N, Jayashree R S and Kamath P V 2003b J. Electrochem. Soc. 150 520
Ramesh T N, Kamath P V and Shivakumara C 2005 J. Electrochem. Soc. 152 806
Rodriguez-Carvajal J 2000 Laboratoire Leon Brillouin, http://www-llb.cea.fr/fullweb/powder.htm.
Tessier C, Haumesser P H, Bernard P and Delmas C 1999 J. Electrochem. Soc. 146 2059
Young R A (ed.) 1993 The Rietveld method (International Union of Crystallography, New York: Oxford University Press)
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Ramesh, T.N., Vishnu Kamath, P. Temperature-induced control over phase selection among hydroxides of nickel. Bull Mater Sci 31, 169–172 (2008). https://doi.org/10.1007/s12034-008-0029-x
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DOI: https://doi.org/10.1007/s12034-008-0029-x