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Lithium ion batteries with titania/graphene anodes

United States Patent

May 28, 2013
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
Lithium ion batteries having an anode comprising at least one graphene layer in electrical communication with titania to form a nanocomposite material, a cathode comprising a lithium olivine structure, and an electrolyte. The graphene layer has a carbon to oxygen ratio of between 15 to 1 and 500 to 1 and a surface area of between 400 and 2630 m.sup.2/g. The nanocomposite material has a specific capacity at least twice that of a titania material without graphene material at a charge/discharge rate greater than about 10 C. The olivine structure of the cathode of the lithium ion battery of the present invention is LiMPO.sub.4 where M is selected from the group consisting of Fe, Mn, Co, Ni and combinations thereof.
Liu; Jun (Richland, WA), Choi; Daiwon (Richland, WA), Yang; Zhenguo (Richland, WA), Wang; Donghai (State College, PA), Graff; Gordon L (West Richland, WA), Nie; Zimin (Richland, WA), Viswanathan; Vilayanur V (Richland, WA), Zhang; Jason (Richland, WA), Xu; Wu (Richland, WA), Kim; Jin Yong (Richland, WA)
Battelle Memorial Institute (Richland, WA)
12/ 901,526
October 9, 2010
The invention was made with Government support under Contract DE-AC0676RLO 1830, awarded by the U.S. Department of Energy. The Government has certain rights in the invention.