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Lithium Ion Carbon Electrodes from Virtual Cathode Deposition

Thursday, 4 October 2018: 10:50
Galactic 8 (Sunrise Center)
C. Murphy, E. A. Petrucco (Johnson Matthey Battery Materials), R. V. Kumar, R. I. Tomov (University of Cambridge), and D. Yarmolich (Plasma App)
Commercial graphite electrodes exhibit insufficient energy density to meet future automotive battery targets. Herein we explore the electrochemical characteristics of a stable high energy density carbon battery anode layer directly prepared by PVD related Virtual Cathode Deposition technique. The novel form of carbon prepared by VCD enables access to a specific capacity much higher than the graphite theoretical value of 375mAhg-1 while having high coulombic efficiency and lifetime. Lithium ion diffusion was derived from a range of electrochemical methods and compared with ex-situ results. Our ex-situ analysis provides further insight into the differences between VCD prepared carbon and conventional graphite anodes.