以氧化石墨烯为模板剂,N-甲基吡咯烷酮( NMP)为溶剂,通过溶剂热法制备高结晶度、片状结构钛酸锂/石墨烯复合电极材料( NMP-LTO/G)。与未添加氧化石墨烯的样品NMP-LTO相比,样品NMP-LTO/G的片状结构更好,结晶性与电化学性能明显提高。讨论氧化石墨烯作为模板剂的作用机理；基于双亲性结构特征和表面活性剂的特点,在复合材料制备过程中,氧化石墨烯与碱性条件、有机溶剂等产生协同作用,有利于高结晶度片状结构NMP-LTO/G复合材料形成。
A Li4 Ti5 O12( LTO)-graphene ( G) hybrid with a flaky structure was fabricated by solvothermal treatment of a suspen-sion of graphene oxide ( GO) , lithium hydroxide and tetrabutyltitanate in 1-methyl-2-pyrrolidinone, followed by calcination of the solid product at 700℃ for 1 h. GO as the precursor of graphene is amphiphilic and acts as an anionic surfactant and template for the growth of LTO under alkaline conditions to form the flaky LTO-G hybrid with a high crystallinity. Compared with the material with-out GO, the LTO-G has a typical flaky morphology and exhibits a much higher capacity and betterrate capability.
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