title: High-Performance Supercapacitor Electrode Materials from Cellulose-Derived Carbon Nanofibers.
abstract: Nitrogen-functionalized carbon nanofibers (N-CNFs) were prepared by carbonizing polypyrrole (PPy)-coated cellulose NFs, which were obtained by electrospinning, deacetylation of electrospun cellulose acetate NFs, and PPy polymerization. Supercapacitor electrodes prepared from N-CNFs and a mixture of N-CNFs and Ni(OH)2 showed specific capacitances of ∼236 and ∼1045 F g(-1), respectively. An asymmetric supercapacitor was further fabricated using N-CNFs/Ni(OH)2 and N-CNFs as positive and negative electrodes. The supercapacitor device had a working voltage of 1.6 V in aqueous KOH solution (6.0 M) with an energy density as high as ∼51 (W h) kg(-1) and a maximum power density of ∼117 kW kg(-1). The device had excellent cycle lifetime, which retained ∼84% specific capacitance after 5000 cycles of cyclic voltammetry scans. N-CNFs derived from electrospun cellulose may be useful as an electrode material for development of high-performance supercapacitors and other energy storage devices.
authors.affiliation: †College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.|‡Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia.
authors.forename: Jie
authors.initials: J
authors.lastname: Cai
authors.affiliation: ‡Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia.
authors.forename: Haitao
authors.initials: H
authors.lastname: Niu
authors.affiliation: ‡Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia.
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Li
authors.affiliation: ‡Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia.
authors.forename: Yong
authors.initials: Y
authors.lastname: Du
authors.affiliation: ‡Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia.
authors.forename: Pavel
authors.initials: P
authors.lastname: Cizek
authors.affiliation: §CSIRO Materials Science and Engineering, Clayton, Victoria 3169, Australia.
authors.forename: Zongli
authors.initials: Z
authors.lastname: Xie
authors.affiliation: †College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Hanguo
authors.initials: H
authors.lastname: Xiong
authors.affiliation: ‡Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia.
authors.forename: Tong
authors.initials: T
authors.lastname: Lin
keywords: cellulose; electrospinning; nanofibers; nitrogen-functionalized carbon nanofiber; supercapacitor