|Electrochemical stability of graphene cathode for high-voltage lithium ion capacitors|
|Wang, YZ; Shan, XY; Wang, DW; Chen, CM; Li, F; Cheng, HM; Li, F (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.; Wang, DW (reprint author), Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia.
|发表期刊||ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
|摘要||The energy density of electrochemical lithium ion capacitors can be effectively improved through implementing both high capacity cathode and high voltage electrolyte. Graphene is considered as one of the most promising cathodes for lithium ion capacitors because of its high electric conductivity, tunable surface functional groups and controllable pore structure. The development of 5-V organic electrolyte provides an opportunity to expand the stable working potential window of graphene cathodes. In this work, we explored the high-voltage electrochemical behavior of graphene cathodes in a 5-V organic electrolyte (3.0-5.0V vs Li/Li+). The prohibiting effect of small pores (< 5 nm) on electrolyte decomposition during cycling is noticed and correlated with the pore size of graphene powders. The results showed the excellent cycling stability (100% retention after 2000 cycles) of graphene cathodes abundant with pores smaller than 5 nm. This finding indicates a new strategy for practical improvement of graphene-related electrode applications. (C) 2016 Curtin University of Technology and John Wiley & Sons, Ltd.|
|部门归属||[wang, yu-zuo] northeastern univ, key lab anisotropy & texture mat, shenyang 110819, peoples r china
; [wang, yu-zuo
; shan, xu-yi
; li, feng
; cheng, hui-ming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
; [wang, da-wei] univ new south wales, sch chem engn, sydney, nsw 2052, australia
; [chen, cheng-meng] chinese acad sci, inst coal chem, key lab carbon mat, taiyuan 030001, peoples r china
High Voltage Electrolyte
Pore Size Distribution
Lithium Ion Capacitors
|通讯作者||Li, F (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.; Wang, DW (reprint author), Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia.|
Wang, YZ,Shan, XY,Wang, DW,et al. Electrochemical stability of graphene cathode for high-voltage lithium ion capacitors[J]. ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING,2016,11(3):407-414.
Wang, YZ.,Shan, XY.,Wang, DW.,Chen, CM.,Li, F.,...&Wang, DW .(2016).Electrochemical stability of graphene cathode for high-voltage lithium ion capacitors.ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING,11(3),407-414.
Wang, YZ,et al."Electrochemical stability of graphene cathode for high-voltage lithium ion capacitors".ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING 11.3(2016):407-414.