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采用基于FeI2/Ni(NO3)2溶液的温和化学法还原制备低成本的纸张型石墨烯,并对其导电与催化性能进行了研究.研究结果表明:在pH=1.5,温度为95℃的条件下处理6 h,得到电导率高达30231 S/m的纸张型石墨烯,这是由于作为强路易斯酸的Fe2+促进了亲核取代反应,提高了还原效率,从而提高了纸张型石墨烯的电导率;而Ni2+通过减少溶液中的H+来抑制Fe2+的水解,从而保证Fe2+对石墨烯的充分还原以及达到保护环境的目的.此外,基于此还原工艺制备的纸张型石墨烯在I-/I3-电解液中可以获得接近铂电极的电流密度,表明制备出的纸张型石墨烯具有较好的催化性能,并可以为电子提供快速的传出通道,使其在太阳能电池中表现出较好的应用前景.“,”A novel method to produce reductive graphene oxide (RGO) with FeI2/Ni2+ applied as reductive agent was reported. This method provides a cheap, effective and environmentally friendly route for the large-scale production of RGO without losing its high conductivity and catalytic activity. An extremely high conductivity of 30231 S/m was obtained affer the optimized FeI2/Ni(NO3)2 solution treatment. The enhancement of bulk conductivity was clue to the promotion of the nucleophilic substitution reaction induced by Fe2+(a strong Lewis acid). Ni2+was introduced to opti-mize the reductive process by reducing the concentration of hydrogen ions, which would inhibit the hydrolysis of Fe2+. Furthermore, a high cathodic peak current density was observed when applying the free-standing RGO paper as counter electrode in I-/I3- electrolyte system, indicating the high catalytic performance of the RGO paper and providing electron transporting pathway. These outstanding features exhibit a promising prospect of application in solar cells.