title: Flexible and Binder-Free Hierarchical Porous Carbon Film for Supercapacitor Electrodes Derived from MOFs/CNT.
abstract: Rational design of free-standing porous carbon materials with large specific surface area and high conductivity is a great need for ligh-weight suprecapacitors. Here, we report a flexible porous carbon film composed of metal-organic framework (MOF)-derived porous carbon polyhedrons and carbon nanotubes (CNTs) as binder-free supercapacitor electrode for the first time. Due to the synergistic combination of carbon polyhedrons and CNT, the obtained carbon electrode shows a specific capacitance of 381.2 F g-1at 5 mV s-1and 194.8 F g-1at 2 A g-1and outstanding cycling stability with a Coulombic effciency above 95% after 10000 cycles at 10 A g-1. The assembled aqueous symmetrical supercapacitor exhibits an energy density of 9.1 Wh kg-1with a power density of 3500 W kg-1. The work opens a new way to design flexible MOF-based hierarchical porous carbon film as binder-free electrodes for high-performance energy storage devices.
authors.affiliation: State Key Laboratory of Silicon Materials, School of Material Science and Engineering, and ‡Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Yazhi
authors.initials: Y
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Silicon Materials, School of Material Science and Engineering, and ‡Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Gaoran
authors.initials: G
authors.lastname: Li
authors.affiliation: State Key Laboratory of Silicon Materials, School of Material Science and Engineering, and ‡Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Guo
authors.affiliation: State Key Laboratory of Silicon Materials, School of Material Science and Engineering, and ‡Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Yulong
authors.initials: Y
authors.lastname: Ying
authors.affiliation: State Key Laboratory of Silicon Materials, School of Material Science and Engineering, and ‡Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Xinsheng
authors.identifier: http://orcid.org/0000-0002-5355-4854
authors.initials: X
authors.lastname: Peng
keywords: carbon nanotube; flexible carbon film; hierarchical porous structure; metal−organic frameworks; supercapacitor