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http://dx.doi.org/10.5229/JKES.2010.13.2.128

Evaluation of Electrochemical Stability and Performance of Graphite Sheets as Current Collectors for Lead Acid Battery  

An, Sang-Yong (R&D Center, Sebang Hi-Tech)
Kim, Eung-Jin (R&D Center, Sebang Hi-Tech)
Yoon, Youn-Saup (R&D Center, Sebang Hi-Tech)
Kim, Hee-Jung (Technology team, Global battery)
Publication Information
Journal of the Korean Electrochemical Society / v.13, no.2, 2010 , pp. 128-131 More about this Journal
Abstract
Graphite sheet electro-deposited with lead was evaluated as a possible candidate for current collectors of lead acid batteries. Cyclic voltammetry was performed on the materials to evaluate the electrochemical properties. The graphite sheet electro-deposited with lead is electrochemically stable in the cathodic potential sweep. However, in the anodic potential sweep, the graphite sheet electro-deposited with lead is electrochemically unstable due to the oxygen evolution and the intercalation of sulfuric acid. Lead acid batteries were prepared by using a graphite sheet and a cast grid as current collectors for anode and performance test using those batteries was carried out. A lead acid battery with graphite sheets showed higher capacity and energy density than a conventional lead acid battery with cast grid.
Keywords
Lead acid battery; Current collector; Graphite sheet; Electrodeposition;
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