title: Multidimensional MnO2 nanohair-decorated hybrid multichannel carbon nanofiber as an electrode material for high-performance supercapacitors.
abstract: One-dimensional (1D)-structured nanomaterials represent one of the most attractive candidates for energy-storage systems due to their contribution to design simplicity, fast charge-transportation network, and their allowance for more accessible ion diffusion. In particular, 1D-structured nanomaterials with a highly complex inner-pore configuration enhance functionality by taking advantage of both the hollow and 1D structures. In this study, we report a MnO2 nanohair-decorated, hybrid multichannel carbon nanofiber (Mn_MCNF) fabricated via single-nozzle co-electrospinning of two immiscible polymer solutions, followed by carbonization and redox reactions. With improved ion accessibility, the optimized Mn_MCNF sample (Mn_MCNF_60 corresponding to a reaction duration time of 60 min for optimal MnO2 nanohair growth) exhibited a high specific capacitance of 855 F g(-1) and excellent cycling performance with ∼87.3% capacitance retention over 5000 cycles.
authors.affiliation: School of Chemical and Biological Engineering, College of Engineering, Seoul National University, 599 Gwanangno, Gwanakgu, Seoul, 151-742, Korea. jsjang@plaza.snu.ac.kr.
authors.forename: Jaemoon
authors.initials: J
authors.lastname: Jun
authors.forename: Jun Seop
authors.initials: JS
authors.lastname: Lee
authors.forename: Dong Hoon
authors.initials: DH
authors.lastname: Shin
authors.forename: Sung Gun
authors.initials: SG
authors.lastname: Kim
authors.forename: Jyongsik
authors.initials: J
authors.lastname: Jang