Self-standing rationally functionalized graphene as high-performance electrode materials for supercapacitors  

作　　者：Delong Ma Zhong Wu Zhanyi Cao 

机构地区：[1]Key Laboratory of Automobile Materials,Ministry of Education,and Department of Materials Science and Engineering,Jilin University [2]State Key Laboratory of Rare Earth Resource Utilization

出　　处：《Journal of Energy Chemistry》2014年第3期346-353,共8页能源化学（英文版）

基　　金：supported by 100 Talents Programme of the Chinese Academy of Sciences;National Program on Key Basic Research Project of China(973 Program,Grant No.2012CB215500);Foundation for Innovative Research Groups of the National Natural Science Foundation of China(Grant No.20921002 and No.21101147);the Science and Technology Development Program of Jilin Province(Grant No.20100102 and 20116008)

摘　　要：Supercapacitors（SCs） have attracted much attention as one of the alternative energy devices due to their high power performance,long cycle life,and low maintenance cost.Graphene is considered as an innovative and promising material due to its large theoretical specific surface area,high electrical conductivity,good mechanical properties and chemical stability.Herein,we report an effective strategy for elaborately constructing rationally functionalized self-standing graphene（SG） obtained from giant graphene oxide（GGO） paper followed by an ultrarapid thermal-processing.This treatment results in both the exfoliation of graphene sheets and the reduction of GGO by elimination of oxygencontaining groups.The as-prepared SG electrode materials without additive and conducting agent provide an excellent combination of the electrical double layer capacitor（EDLC） and pseudocapacitor（PC） functions and exhibit superior electrochemical performance,including high specific capacitance,good rate capability and excellent cycling stability when investigated in three-electrode electrochemical cells.Supercapacitors（SCs） have attracted much attention as one of the alternative energy devices due to their high power performance,long cycle life,and low maintenance cost.Graphene is considered as an innovative and promising material due to its large theoretical specific surface area,high electrical conductivity,good mechanical properties and chemical stability.Herein,we report an effective strategy for elaborately constructing rationally functionalized self-standing graphene（SG） obtained from giant graphene oxide（GGO） paper followed by an ultrarapid thermal-processing.This treatment results in both the exfoliation of graphene sheets and the reduction of GGO by elimination of oxygencontaining groups.The as-prepared SG electrode materials without additive and conducting agent provide an excellent combination of the electrical double layer capacitor（EDLC） and pseudocapacitor（PC） functions and exhibit superior electrochemical performance,including high specific capacitance,good rate capability and excellent cycling stability when investigated in three-electrode electrochemical cells.

关 键 词：functionalized graphene SUPERCAPACITORS self-standing 

分 类 号：O613.71[理学—无机化学] TM53[理学—化学]