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    Carbon materials
    1.
    发明专利
    Carbon materials 未知

    公开(公告)号：GB2585621A

    公开(公告)日：2021-01-20

    申请号：GB201815535

    申请日：2018-09-24

    Applicant: PLASMA APP LTD

    Inventor： DMITRY YARMOLICH ,  DENIS YARMOLICH ,  RAMACHANDRAN VASANT KUMAR ,  RUMEN TOMOV ,  HYUN-KYUNG KIM ,  TENG ZHAO

    IPC: H01M4/587 ,  C23C14/06 ,  C23C14/34 ,  H01G11/32 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/66 ,  H01M10/052

    Abstract: A carbon material comprises sp2 and sp3 hybridised carbon, especially for use in an electrochemical cell, e.g. as an electrode material. An electrode comprising the carbon material is also described, the electrode preferably operating as an anode in a Li-ion battery. Preferably, the carbon material comprises at least 25 wt% sp2-type carbon and at least 2 wt% sp3-type carbon, and the carbon material has a hierarchical pore morphology. The carbon material may comprise nanocrystals, and areas of regularly arranged layers of carbon embedded in amorphous carbon. The carbon material may be doped, e.g. with 0.1 to 30 wt% of one or more dopants selected from Si, P, Fe, Cu, Li, Al, N, O, S, B, Ti, Co, Ni, Na and/or K. In a further aspect, a method of making a carbon material comprises exposing a substrate to a flux of at least 1011 carbon ions per cm2 of substrate per 1 ms, a majority of the carbon ions having a kinetic energy of at least 10 eV. The flux may be pulsed and provided by a virtual cathode deposition (VCD) process. The process may utilise a hollow cathode 101, within which a plasma is supplied, a substrate 125 and a carbon target 117.

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