Lithium-ion cell having a high energy density and high power density

Patent · Tue Jul 01 04:00:00 EDT 2014

OSTI ID:1532102

Chen, Guorong; Zhamu, Aruna; Wang, Xiging; Jang, Bor Z.; Wang, Yanbo; Fang, Qing

A lithium-ion cell comprising: (A) a cathode comprising graphene as the cathode active material having a surface area to capture and store lithium thereon and wherein said graphene cathode is meso-porous having a specific surface area greater than 100 m2/g; (B) an anode comprising an anode active material for inserting and extracting lithium, wherein the anode active material is mixed with a conductive additive and/or a resin binder to form a porous electrode structure, or coated onto a current collector in a coating or thin film form; (C) a porous separator disposed between the anode and the cathode; (D) a lithium-containing electrolyte in physical contact with the two electrodes; and (E) a lithium source disposed in at least one of the two electrodes when the cell is made. This new Li-ion cell exhibits an unprecedentedly high energy density.

• Research Organization: Nanotek Instruments, Inc., Dayton, OH (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
• Assignee: Nanotek Instruments, Inc. (Dayton, OH)
• Patent Number(s): 8,765,303
• Application Number: 13/506,168
• OSTI ID: 1532102
• Country of Publication: United States
• Language: English