title: Nitrogen/manganese oxides doped porous carbons derived from sodium butyl naphthalene sulfonate.
abstract: High-performance porous carbons have been prepared as supercapacitor electrode materials by co-doped with nitrogen and MnOx via a direct carbonization method, using sodium butyl naphthalene sulfonate (abbr. BNS-Na) as carbon source. It is believed that the in situ formed Na6(SO4)2(CO3) in the product would probably serve as temporary template for producing porous structures. The impacts of nitrogen/MnOx contents as well as the structures upon the capacitive performances were emphatically discussed. It indicates that introducing nitrogen and/or MnOx into the carbon matrix can remarkably improve their capacitive performances based on the cyclic voltammetry and galvanostatic charge-discharge measurements in 6 mol L(-1) KOH aqueous solution. The specific capacitances of doped carbons can reach up to ca. 167.0-241.8 F g(-1) compared with that of the undoped carbon of ca. 105.6 F g(-1). Of these samples, the carbon-Mn-1:30-N-1:15 sample co-doped with nitrogen and MnOx exhibits the highest specific capacitance and energy density up to 241.8 F g(-1) and 33.6 Wh kg(-1), respectively. In particular, these carbons also exhibit high intrinsic capacitances (i.e., capacitance per surface area) up to ca. 0.66-1.92 F m(-2).
authors.affiliation: School of Chemical Engineering, Anhui Key Laboratory of Controllable Chemistry Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, PR China. cxyhfut@gmail.com
authors.forename: Xiang Ying
authors.initials: XY
authors.lastname: Chen
authors.forename: Chong
authors.initials: C
authors.lastname: Chen
authors.forename: Zhong Jie
authors.initials: ZJ
authors.lastname: Zhang
authors.forename: Dong Hua
authors.initials: DH
authors.lastname: Xie
authors.forename: Jian Wei
authors.initials: JW
authors.lastname: Liu