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Lightweight, durable lead-acid batteries

United States Patent

September 13, 2011
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).
Lara-Curzio; Edgar (Lenoir City, TN), An; Ke (Knoxville, TX), Kiggans, Jr.; James O. (Oak Ridge, TN), Dudney; Nancy J. (Knoxville, TN), Contescu; Cristian I. (Knoxville, TN), Baker; Frederick S. (Oak Ridge, TN), Armstrong; Beth L. (Clinton, TN)
UT-Battelle LLC (Oak Ridge, TN)
12/ 110,913
April 28, 2008
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with government support under Contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in the invention.