title: Fabrication of high-quality graphene oxide nanoscrolls and application in supercapacitor.
abstract: We reported a simple and effective way of fabricating one-dimensional (1D) graphene oxide nanoscrolls (GONS) from graphene oxide (GO) sheets through shock cooling by liquid nitrogen. The corresponding mechanism of rolling was proposed. One possibility is the formation of ice crystals during the shock cooling process in liquid nitrogen to be the driving force. The other might be due to the uneven stress of the sheets inside or outside ice during the lyophilization. After reducing, graphene nanoscrolls (GNS) exhibited good structural stability, high specific surface area, and high specific capacitance. The capacitance properties were investigated by cyclic voltammetry, galvanostatic charge-discharge, and electrical impedance spectroscopy. A specific capacity of 156 F/g for the GNS at the current density of 1.0 A/g was obtained comparing with the specific capacity of 108 F/g for graphene sheets. Those results indicated that GNS-based rolling structure could be a kind of promising electrode material for supercapacitors and batteries.
authors.affiliation: Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210046 China.
authors.forename: Tianju
authors.initials: T
authors.lastname: Fan
authors.affiliation: Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210046 China.
authors.forename: Wenjin
authors.initials: W
authors.lastname: Zeng
authors.affiliation: Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210046 China.
authors.forename: Qiaoli
authors.initials: Q
authors.lastname: Niu
authors.affiliation: Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210046 China.
authors.forename: Songzhao
authors.initials: S
authors.lastname: Tong
authors.affiliation: Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210046 China.
authors.forename: Kaiyu
authors.initials: K
authors.lastname: Cai
authors.affiliation: State Key Laboratory of Organic Electronics and Information Displays and Fountain Global Photoelectric Technology Co., Ltd. 2 Xinyue Road, Yancheng, Jiangsu 224000 China.
authors.forename: Yidong
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210046 China ; State Key Laboratory of Organic Electronics and Information Displays and Fountain Global Photoelectric Technology Co., Ltd. 2 Xinyue Road, Yancheng, Jiangsu 224000 China.
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.affiliation: Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210046 China ; Department of Physics and Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210 USA.
authors.forename: Yong
authors.initials: Y
authors.lastname: Min
authors.affiliation: Department of Physics and Chemistry & Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210 USA.
authors.forename: Arthur J
authors.initials: AJ
authors.lastname: Epstein
keywords: 62.23.Hj (Nanowires); 72.80.Vp (Graphene electronic transport); 81.07.De (Nanotubes); 81.16.Be (Chemical synthesis methods)