title: Hierarchical Cu2O/CuO/Co3O4 core-shell nanowires: synthesis and electrochemical properties.
abstract: We prepared hierarchical Cu2O/CuO/Co3O4 core-shell nanowires (NWs) via a facile chemical deposition method followed by calcination for use as the electrode of supercapacitors. The Cu2O/CuO/Co3O4 electrode showed a specific capacitance of 318 F g(-1) at a current density of 0.5 A g(-1). 80% of the original specific capacitance was retained after 3000 cycles at a current density of 5 A g(-1). An asymmetric supercapacitor cell using Cu2O/CuO/Co3O4 NWs as the positive electrode and activated graphene as the negative electrode exhibited a maximum energy density of 12 Wh kg(-1). The electrochemical properties of the electrode were strongly related to the hierarchical nanostructure, which not only provided rich active sites but also shortened ion transport pathways.
authors.affiliation: College of Material Science and Engineering, Chongqing University, Chongqing 400044, People's Republic of China.
authors.forename: Min
authors.initials: M
authors.lastname: Kuang
authors.forename: Tong Tao
authors.initials: TT
authors.lastname: Li
authors.forename: Hao
authors.initials: H
authors.lastname: Chen
authors.forename: Sheng Mao
authors.initials: SM
authors.lastname: Zhang
authors.forename: Li Li
authors.initials: LL
authors.lastname: Zhang
authors.forename: Yu Xin
authors.initials: YX
authors.lastname: Zhang