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Vanadyl phosphates as high energy density cathode materials for rechargeable sodium battery

United States Patent

August 1, 2017
View the Complete Patent at the US Patent & Trademark Office
A positive electrode comprising .epsilon.-VOPO.sub.4 and/or Na.sub.x(.epsilon.-VOPO.sub.4) wherein x is a value from 0.1 to 1.0 as an active ingredient, wherein the electrode is capable of insertion and release of sodium ions and a reversible sodium battery containing the positive electrode are provided.
Zhang; Ruigang (Ann Arbor, MI), Mizuno; Fuminori (Ann Arbor, MI), Ling; Chen (Ann Arbor, MI), Whittingham; M. Stanley (Vestal, NY), Zhang; Ruibo (Vestal, NY), Chen; Zehua (Jiaozuo, CN)
Toyota Motor Engineering & Manufacturing North America, Inc. (Erlanger, KY), The Research Foundation for The State University of New York (Albany, NY)
14/ 735,894
June 10, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under DE-SC0001294 awarded by the Department of Energy. The government has certain rights in the invention.