Actions for Studies on the development of mossy zinc electrodeposits from flowing alkaline electrolytes [electronic resource].

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Studies on the development of mossy zinc electrodeposits from flowing alkaline electrolytes [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1991.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: (172 pages) : digital, PDF file
Additional Creators
Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The initiation and characteristics of mossy zinc electrodeposits have been investigated. Batteries with zinc electrodes are candidates for electric vehicle applications; however, this electrode is prone to form non-compact deposits that contribute to capacity loss and battery failure. Moss is deposited when the current density is far from the limiting current. This morphology first appears only after the bulk deposit is approximately 1 μm thick. In this investigation, the effects of flow rate (Re=0--4000), current density (0--50 mA/cm²), concentration of the electroactive species (0.25 and 0.5 M), and the concentration of supporting electrolyte (3, 6, and 12 M) on the initiation of moss were examined. The rotating concentric cylinder electrode was employed for most of the experiments; and a flow channel was used to study the development of morphology. After the experiment, the deposit was characterized using microscopic, x-ray diffraction, and profilometric techniques. 94 refs., 72 figs.
Report Numbers
E 1.99:lbl-30843
lbl-30843
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
07/01/1991.
"lbl-30843"
"DE92000961"
Mc Vay, L.
Funding Information
AC03-76SF00098
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