Solid electrolyte for alkali-metal-ion batteries
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United States of America Patent
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Jul 10, 2012
Grant Date -
May 28, 2009
app pub date -
Nov 25, 2008
filing date -
Nov 27, 2007
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Abstract
An alkali-metal-ion battery is disclosed in one embodiment of the invention as including an anode containing an alkali metal, a cathode, and an electrolyte separator for conducting alkali metal ions between the anode and the cathode. In selected embodiments, the electrolyte separator includes a first phase comprising poly(alkylene oxide) and an alkali-metal salt in a molar ratio of less than 10:1. The electrolyte separator may further include a second phase comprising ionically conductive particles that are conductive to the alkali metal ions. These ionically conductive particles may include ionically conductive ceramic particles, glass particles, glass-ceramic particles, or mixtures thereof.
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