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Source of electrical power for an electric vehicle and other purposes, and related methods

United States Patent

6,063,525
May 16, 2000
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Microthin sheet technology is disclosed by which superior batteries are constructed which, among other things, accommodate the requirements for high load rapid discharge and recharge, mandated by electric vehicle criteria. The microthin sheet technology has process and article overtones and can be used to form thin electrodes used in batteries of various kinds and types, such as spirally-wound batteries, bipolar batteries, lead acid batteries, silver/zinc batteries, and others. Superior high performance battery features include: (a) minimal ionic resistance; (b) minimal electronic resistance; (c) minimal polarization resistance to both charging and discharging; (d) improved current accessibility to active material of the electrodes; (e) a high surface area to volume ratio; (f) high electrode porosity (microporosity); (g) longer life cycle; (h) superior discharge/recharge characteristics; (j) higher capacities (A.multidot.hr); and k) high specific capacitance.
LaFollette; Rodney M. (Provo, UT)
Bipolar Technologies Corp. (Provo, UT)
08/ 974,848
November 20, 1997
GOVERNMENTAL SPONSORSHIP This invention was made with government support under Contract No. BE-AC-36-03CH1009 awarded by the Department of Energy. The Government has certain rights in this invention.