Research on rechargeable oxygen electrodes.A research program is described which consisted of studying the effects of electrode cycling in very pure KOH solutions, with and without controlled additions of impurities, on oxide formation, oxygen evolution kinetics, oxygen reduction kinetics (including hydrogen peroxide formation), and changes in electrode structure. Bright platinum, platinized platinum, and Teflon-bonded platinum black electrodes were studied. Three main problem areas are identified: the buildup of a refractory anodic layer on prolonged cycling, which leads to a degradation of performance; the dissolution and subsequent deposition of dendritic platinum in the separator, leading to short-circuit ing and loss of electrocatalyst; and the disruptive effect of bubbling during gas evolution on charge. Each of these problem areas is analyzed, and remedial solutions are proposed.
Document ID
19720031009
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Giner, J.
Holleck, G.
Malachesky, P. A. (Tyco Laboratories, Inc. Waltham, Mass., United States)
Date Acquired
August 6, 2013
Publication Date
December 1, 1970
Subject Category
Auxiliary Systems
Meeting Information
Meeting: Electrochemical Society, Advances in Battery Technology Symposium