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HIGH CAPACITY AND STABLE CATHODE MATERIALS

United States Patent Application

20170338471
A1
View the Complete Application at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
High energy density cathode materials, such as LiNi.sub.xMn.sub.yCo.sub.zO2 (NMC) cathode materials, with improved discharge capacity (hence energy density) and enhanced cycle life are described, A solid electrolyte, such as lithium phosphate infused inside of secondary particles of the cathode material demonstrates significantly enhanced structural integrity without significant or without any observable particle cracking occurring during charge/discharge processes, showing high capacity retention of more than 90% after 200 cycles at room temperature. In certain embodiments the disclosed cathode materials (and cathodes made therefrom) are formed using nickel-rich NMC and/or are used in a battery system with a non-aqueous dual-Li salt electrolytes.
Zheng, Jianming (Richland, WA), Zhang, Jiguang (Richland, WA), Yan, Pengfei (Richland, WA), Wang, Chongmin (Richland, WA), Zhao, Wengao (Richland, WA), Chen, Shuru (Richland, WA), Xu, Wu (Richland, WA)
Battelle Memorial Institute
15/ 597,025
May 16, 2017
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT [0002] This invention was made with government support under Contract DE-AC0576RL01830 awarded by the U.S. Department of Energy. The government has certain rights in the invention.