title: Preparation and application of porous nitrogen-doped graphene obtained by co-pyrolysis of lignosulfonate and graphene oxide.
abstract: Nitrogen-doped graphene with in-plane porous structure was fabricated by simple co-pyrolysis of lignosulfonate and graphene oxide in the presence of urea. Lignosulfonate first performs as a dispersant adsorbed on the surface of graphene oxide to prevent the aggregation of graphene oxide sheets for preparing homogeneous nitrogen-containing precursor, and then acts as a porogen to render graphene sheets with nanopores in the pyrolysis process of the nitrogen-containing precursor. Urea was used as a nitrogen source to incorporate nitrogen atoms into graphene basal plane. The special nanoporous structure combined with nitrogen content of 7.41at.% endows the nitrogen-doped graphene electrode material with super capacitance up to 170Fg(-1), high rate performance, and excellent cycling stability.
authors.affiliation: College of Materials Science and Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China.
authors.forename: Hai-Bo
authors.initials: HB
authors.lastname: Zhao
authors.affiliation: College of Materials Science and Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China.
authors.forename: Wen-Dong
authors.initials: WD
authors.lastname: Wang
authors.affiliation: College of Materials Science and Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China. Electronic address: qiufenglvfzu@gmail.com.
authors.forename: Qiu-Feng
authors.initials: QF
authors.lastname: Lü
authors.affiliation: College of Materials Science and Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China.
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Lin
authors.affiliation: College of Materials Science and Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China.
authors.forename: Qilang
authors.initials: Q
authors.lastname: Lin
authors.affiliation: Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 2019 Jialuo Road, Jiading District, Shanghai 201800, China.
authors.forename: Haijun
authors.initials: H
authors.lastname: Yang
mesh_terms: D025802:Electric Capacitance; D006108:Graphite / Q000138:chemical synthesis* / Q000737:chemistry*; D006358:Hot Temperature; D008031:Lignin / Q000031:analogs & derivatives* / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods; D009584:Nitrogen / Q000737:chemistry; D010087:Oxides / Q000737:chemistry*; D016062:Porosity; D014508:Urea / Q000737:chemistry*
chemical_list: D010087:Oxides; D006108:Graphite; C001545:lignosulfuric acid; D014508:Urea; D008031:Lignin; D009584:Nitrogen
keywords: Lignosulfonate; Nitrogen-doped; Porous graphene; Pyrolysis; Supercapacitor