title: Hierarchical Heterostructures of NiCo2O4@XMoO4 (X = Ni, Co) as an Electrode Material for High-Performance Supercapacitors.
abstract: Hierarchical heterostructures of NiCo2O4@XMoO4 (X = Ni, Co) were developed as an electrode material for supercapacitor with improved pseudocapacitive performance. Within these hierarchical heterostructures, the mesoporous NiCo2O4 nanosheet arrays directly grown on the Ni foam can not only act as an excellent pseudocapacitive material but also serve as a hierarchical scaffold for growing NiMoO4 or CoMoO4 electroactive materials (nanosheets). The electrode made of NiCo2O4@NiMoO4 presented a highest areal capacitance of 3.74 F/cm(2) at 2 mA/cm(2), which was much higher than the electrodes made of NiCo2O4@CoMoO4 (2.452 F/cm(2)) and NiCo2O4 (0.456 F/cm(2)), respectively. Meanwhile, the NiCo2O4@NiMoO4 electrode exhibited good rate capability. It suggested the potential of the hierarchical heterostructures of NiCo2O4@CoMoO4 as an electrode material in supercapacitors.
authors.affiliation: No. 2 High School of East China Normal University, Shanghai, 201203, China.
authors.forename: Jiyu
authors.initials: J
authors.lastname: Hu
authors.affiliation: No. 2 High School of East China Normal University, Shanghai, 201203, China. apfenqian@126.com.
authors.forename: Feng
authors.initials: F
authors.lastname: Qian
authors.affiliation: Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu, 215123, China.
authors.forename: Guosheng
authors.initials: G
authors.lastname: Song
authors.affiliation: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China. wlinlin@sues.edu.cn.
authors.forename: Linlin
authors.initials: L
authors.lastname: Wang
keywords: Heterostructures; Nanosheet arrays; NiCo2O4@XMoO4; Supercapacitor