Abstract
The changes in the morphology and the composition of Raney Ni composite-coated electrodes was investigated during leaching in concentrated NaOH aqueous solutions. The rate of hydrogen generated during leaching is increased by stirring the solution, raising the temperature and increasing the NaOH concentration to 6.09 M. The depletion of Al from the Raney Ni particles results in phase transformations and the metal/solution interfacial area increases with time. It is suggested that the electrodeposited nickel has a dominant influence on the hydrogen discharge since the electrocatalytic activity is practically independent of the leaching time.
Similar content being viewed by others
References
G. T. Bowen, H. J. Davis, B. F. Henshaw, R. Lachance, R. L. Leroy and R. Renaud,Int. J. Hydrogen Energy 9 (1984) 59.
K. Lorhberg and P. Kohl,Electrochim. Acta 29 (1984) 1557.
J. Freel, W. J. M. Pieters and R. B. Anderson,J. Catalysis 16 (1970) 281.
,14 (1984) 247.
R. Sassoulas and Y. Trambouze,Soc. chim. (France), 5e série (1964) 985.
P. Fouilloux, G. A. Martin, A. J. Renouprez, B. Moraweck, B. Imelik et M. Piettre,J. of Catalysis 25 (1972) 212.
C. Allibert, A. Wicker, J. Driole et E. Bonnier,Rev. htes Temp. et Refractaires 7 (1970) 45.
A. I. Savelov and A. B. Fasman,J. Phys. Chem. (Russia) 59 (1985) 599.
J. C. Klein and D. M. Hercules,Anal. Chem. 53 (1981) 754.
F. Delanney,Beactivity of Solids 2 (1986) 235.
S. D. Mikhailenko, A. B. Fasman, N. A. Maksinova and E. V. Leongard,Appl. Catalysis 12 (1984) 141.
U. Birkenstock, R. Holm, B. Reinfandt and S. Storp,J. Catalysis 93 (1985) 55.
J. C. Klein and M. Hercules,Anal. Chem. 56 (1984) 685.
E. A. Vishnevetskii, S. D. Mikhailenko, N. A. Maksinova, A. B. Fasman,React. Kinet. Catal. Lett. 31 (1986) 445.
N. A. Maksimova, E. A. Vishnevetskii, V. Sh. Iranov and A. B. Fasman,Appl. Catalysis 35 (1987) 59.
J. Heiszman, K. Payer, S. Bekassy and J. Petro,Acta Chem. Acad. Science Hung. T84 4 (1972) 431.
A. Tungler, J. Petro, T. Mathe, J. Heiszman, S. Bekassy and S. Crusos,T89 1 (1976) 31.
G. L. Padyukova, G. A. Pushkareva, A. B. Fasman and K. Almashev,Sov. Electrochim. 22 (1986) 701.
H. A. Smith, A. J. Chadwell Jr and S. S. Kirslis,J. Phys. Chem. 59 (1955) 820.
R. J. Kokes and P. H. Emmett,J. Am. Chem. Soc. 81 (1959) 5032.
G. L. Padyukova, G. A. Pushkareva, A. B. Fasman and B. K. Almashev,Elektrokhimiya 22 (1986) 747.
Y. Choquette, H. Ménard and L. Brossard,Int. J. Hydrogen Energy 14 (1989) 637.
K. Lorhberg, H. Wullenweber, J. Muller and B. Sarmond, U.S. Patent 4 278 568 (1981).
A. Nidols and R. Schira,Ext. Abstr. No. 236, Electrochem. Soc. Meeting, Cincinnati (May 1984).
K. Machida and M. Enyo,J. Res. Inst. Catalysis 32 (1984) 37.
S. D. Robertson, J. Freel and R. B. Anderson,J. of Catalysis 24 (1972) 130.
V. R. Choudhary and S. K. Chaudhari,J. Chem. Tech. Biotechnol. 33a (1983) 339.
S. D. Mikailenko, G. B. Baeva, B. F. Petrov and A. B. Fasman,Reactivity of Solids 2 (1987) 373.
J.-Y. Huot and L. Brossard,Int. J. Hydrogen 12 (1987) 599.
Y. Choquette, H. Ménard and L. Brossard,Int. J. Hydrogen Energy (in press).
A. W. Adamson, ‘A Textbook of Physical Chemistry’, 2nd edition, Academic Press, London (1979).
‘Handbook of Chemistry and Physics’, CRC Press, 63rd edition (1982).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Choquette, Y., Brossard, L. & Ménard, H. Leaching of Raney nickel composite-coated electrodes. J Appl Electrochem 20, 855–863 (1990). https://doi.org/10.1007/BF01094317
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01094317