An electrolyte composition is featured that includes a solid, ionically conductive polymer, organically modified oxide particles that include organic groups covalently bonded to the oxide particles, and an alkali metal salt. The electrolyte composition is free of lithiated zeolite. The invention also features cells that incorporate the electrolyte composition.
STATEMENT AS TO FEDERALLY SPONSORED RESEARCH
The government of the United States of America has rights in this invention pursuant to Cooperative Agreement No. DE-FC02-91CE50336 awarded by the United States Department of Energy.