title: Charge transfer induced activity of graphene for oxygen reduction.
abstract: Tetracyanoethylene (TCNE), with its strong electron-accepting ability, was used to dope graphene as a metal-free electrocatalyst for the oxygen reduction reaction (ORR). The charge transfer process was observed from graphene to TCNE by x-ray photoelectron spectroscopy and Raman characterizations. Our density functional theory calculations found that the charge transfer behavior led to an enhancement of the electrocatalytic activity for the ORR.
authors.affiliation: College of Materials Science and Engineering, State Key Laboratory of Chem/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, 410082, People's Republic of China.
authors.forename: Anli
authors.initials: A
authors.lastname: Shen
authors.forename: Weijun
authors.initials: W
authors.lastname: Xia
authors.forename: Lipeng
authors.initials: L
authors.lastname: Zhang
authors.forename: Shuo
authors.initials: S
authors.lastname: Dou
authors.forename: Zhenhai
authors.initials: Z
authors.lastname: Xia
authors.forename: Shuangyin
authors.initials: S
authors.lastname: Wang