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Cathode architectures for alkali metal / oxygen batteries

United States Patent

January 13, 2015
View the Complete Patent at the US Patent & Trademark Office
Electrochemical energy storage devices, such as alkali metal-oxygen battery cells (e.g., non-aqueous lithium-air cells), have a cathode architecture with a porous structure and pore composition that is tailored to improve cell performance, especially as it pertains to one or more of the discharge/charge rate, cycle life, and delivered ampere-hour capacity. A porous cathode architecture having a pore volume that is derived from pores of varying radii wherein the pore size distribution is tailored as a function of the architecture thickness is one way to achieve one or more of the aforementioned cell performance improvements.
Visco; Steven J. (Berkeley, CA), Nimon; Vitaliy (San Francisco, CA), De Jonghe; Lutgard C. (Lafayette, CA), Volfkovich; Yury (Moscow, RU), Bograchev; Daniil (Moscow, RU)
PolyPlus Battery Company (Berkeley, CA)
13/ 525,128
June 15, 2012
STATEMENT OF GOVERNMENT SUPPORT This invention was made with Government support under Award No.: DE-AR0000061 awarded by the Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy. The Government has certain rights in this invention.