High-performance charge storage by N-containing nanostructured carbon derived from polyaniline

被引:122
作者
Gavrilov, Nemanja [1 ]
Pasti, Igor A. [1 ]
Vujkovic, Milica [1 ]
Travas-Sejdic, Jadranka [2 ,3 ]
Ciric-Marjanovic, Gordana [1 ]
Mentus, Slavko V. [1 ,4 ]
机构
[1] Univ Belgrade, Fac Phys Chem, Belgrade 11158, Serbia
[2] Univ Auckland, Sch Chem Sci, Polymer Elect Res Ctr, Auckland 1, New Zealand
[3] Victoria Univ Wellington, MacDiarmid Inst Adv Mat & Nanotechnol, Wellington 6140, New Zealand
[4] Serbian Acad Arts & Sci, Belgrade 11000, Serbia
关键词
PORE-SIZE DISTRIBUTION; MICROPOROUS ACTIVATED CARBON; ELECTROCHEMICAL PERFORMANCE; CAPACITANCE PROPERTIES; FUNCTIONAL-GROUPS; NITROGEN; NANOTUBES; ELECTRODES; MESOPORES; EVOLUTION;
D O I
10.1016/j.carbon.2012.04.045
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Nitrogen-containing nanostructured carbon materials, C-nanoPANI, C-nanoPANI-DNSA and C-nanoPANI-SSA, were prepared by the carbonization of nanostructured polyaniline (PANI) doped with sulfuric acid, 3,5-dinitrosalicylic acid (DNSA), and 5-sulfosalicylic acid (SSA), respectively. The charge storage ability of these materials was investigated in alkaline solution. It was found that the specific capacitance increased in the order: C-nanoPANI-DNSA < C-nanoPANI < C-nanoPANI-SSA. The highest capacitance, amounting to 410 Fg(-1) at a scan rate of 5 mVs(-1), was found for C-nanoPANI-SSA. At a large rate of 10 Ag-1, its capacitance displayed a stable value close to 200 Fg(-1). To explain the observed differences in charge storage properties, the materials were characterized by different techniques able to ascertain their morphology, elemental composition, nitrogen surface concentration, chemical state of nitrogen, pore structure and electrical conductivity. All materials were essentially microporous with relatively small fraction of mesopores and displayed conductivities in the range 0.32-0.83 Scm(-1). The best charge-storage performance of C-nanoPANI-SSA was attributed to its highest surface fraction of nitrogen, the highest surface content of pyridinic nitrogen groups, and the highest electrical conductivity, as well as to its well-balanced micro- and mesoporosity and highest content of mesopores. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3915 / 3927
页数:13
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