Journal
JOURNAL OF POWER SOURCES
Volume 191, Issue 2, Pages 362-365Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2009.02.009
Keywords
Hydrazine derivatives; Hydrolysis; Electrochemical oxidation; Alkaline; Non-platinum electrode
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Electrochemical oxidation of hydrazine and its derivatives on the Surface of various metal electrodes in alkaline media was investigated. A comparison of various polycrystalline metal electrodes (Ni, Co, Fe, Cu, Ag, Au, and Pt) showed that Co and Ni electrodes have a lower onset potential for hydrazine oxidation than the Pt electrode. The onset oxidation potential of APA (aminopolyacrylamide), a hydrazine derivative (-0.127V vs. reversible hydrogen electrode, RHE), was similar to that of hydrazine hydrate (-0.178V vs. RITE) in the case of the Co electrode. APA oxidation was possible because of hydrazine desorption that was caused by APA hydrolysis. The hydrolysis reaction was brought about by a heat treatment. This result suggests that the hydrazine hydrolysis reaction of hydrazine derivatives makes it possible to store hydrazine hydrate safely. (C) 2009 Elsevier B.V. All rights reserved.
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