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POROUS AMORPHOUS GeOx AND ITS APPLICATION AS AN ANODE MATERIAL IN LI-ION BATTERIES

United States Patent Application

20150171426
A1
View the Complete Application at the US Patent & Trademark Office
Brookhaven National Laboratory - Visit the Office of Technology Commercialization and Partnerships Website
Germanium Oxide Nanoparticlesfor Superior Battery Electrodes
Amorphus germanium oxide materials are provided that are composed of germanium and oxygen having a formula GeO.sub.x, where 0.01.ltoreq.x.ltoreq.1.99. The germanium oxide forms nanoscale hierarchical porous agglomerates that have high capacity, high diffusivity of lithium, and enhanced cycling stability. The enhanced or superior performance (structural stability and reactivity) of these materials is due to the formation of ultrafine primary nanoparticles, amorphization, pore formation, preferably of nanoscale nature, and the incorporation of oxygen. These amorphous germanium oxide materials may serve as high-capacity anode materials and afford an enhanced capacity applicable for electrochemical cells such as Li-ion batteries.
Wang, Xiao-Liang (Hayward, CA), Han, Weiqiang (Ningbo, CN)
BROOKHAVEN SCIENCE ASSOCIATES, LLC (Upton NY)
14/ 358,926
November 30, 2012
STATEMENT OF GOVERNMENT LICENSE RIGHTS [0002] The present invention was made with government support under contract number DE-ACO2-98CH10886 awarded by the U.S. Department of Energy. The United States government may have certain rights in this invention.