期刊
JOURNAL OF POWER SOURCES
卷 107, 期 2, 页码 162-166出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-7753(01)01001-1
关键词
electric vehicle; electrochemical impedance spectroscopy; gelled-electrolyte; lead-acid battery; silica soot
The influence of the content of SiO2 (in the form of a soot) on the capacity and the self-discharge of lead-acid batteries, as well as on the structure of gelled-electrolyte, is studied in detail by means of cyclic voltammetry (CV), electrochemical impedance spectroscopy and scanning electron microscopy. The content of SiO2 and the viscosity of the gelled-electrolyte are important factors which affect the capacity of batteries. A comparison of cyclic voltammograms indicates a change in the electrochemical behaviour of the lead electrode in the presence of SiO2. The reaction resistance increases as a function of the SiO2 content. The mechanism of the effect of the content of silica soot on electrode capacity and on the performance of gelled-electrolyte is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
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