Fluorinated graphene as a cathode material for high performance primary lithium ion batteries
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摘要: 以异丙醇/水、氟化石墨分别作试剂和原料,采用液相剥离法制备出氟化石墨烯。所制氟化石墨烯呈二维、无定型的多孔结构,其中F含量高达49.7%。氟化石墨烯丰富的C-F键及其超薄的二维纳米结构有利于Li+在充放电过程中的存储和扩散,因此所制氟化石墨烯具有优异的电化学性能,尤其有较大的功率密度。Abstract: A free-standing fluorinated graphene (F-graphene) was fabricated by the simple liquid exfoliation of a fluorinated graphite (F-graphite) in a 2-propanol/water mixture, and was used as the cathode material of primary lithium ion batteries. As-prepared F-grapheneh as a very high fluorine content (49.7 at%), and an amorphous-like two-dimensional nanostructure. These features facilitate the rapid diffusion of lithium ions during discharging. The F-graphene exhibits better electrochemical performance, especially, a higher specific power density than the F-graphite.
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