title: Assembly of flexible CoMoO4@NiMoO4·xH2O and Fe2O3electrodes for solid-state asymmetric supercapacitors.
abstract: In this work, CoMoO4@NiMoO4·xH2O core-shell heterostructure electrode is directly grown on carbon fabric (CF) via a feasible hydrothermal procedure with CoMoO4nanowires (NWs) as the core and NiMoO4nanosheets (NSs) as the shell. This core-shell heterostructure could provide fast ion and electron transfer, a large number of active sites, and good strain accommodation. As a result, the CoMoO4@NiMoO4·xH2O electrode yields high-capacitance performance with a high specific capacitance of 1582 F g-1, good cycling stability with the capacitance retention of 97.1% after 3000 cycles and good rate capability. The electrode also shows excellent mechanical flexibility. Also, a flexible Fe2O3nanorods/CF electrode with enhanced electrochemical performance was prepared. A solid-state asymmetric supercapacitor device is successfully fabricated by using flexible CoMoO4@NiMoO4·xH2O as the positive electrode and Fe2O3as the negative electrode. The asymmetric supercapacitor with a maximum voltage of 1.6 V demonstrates high specific energy (41.8 Wh kg-1at 700 W kg-1), high power density (12000 W kg-1at 26.7 Wh kg-1), and excellent cycle ability with the capacitance retention of 89.3% after 5000 cycles (at the current density of 3A g-1).
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.affiliation: Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Leipeng
authors.initials: L
authors.lastname: Zhang
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Xusong
authors.initials: X
authors.lastname: Liu
authors.affiliation: Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Yanlong
authors.initials: Y
authors.lastname: Tian
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China.|Heilongjiang University of Science and Technology, Harbin 150022, PR China.
authors.forename: Xiaoxu
authors.initials: X
authors.lastname: Liu
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Jiupeng
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Li