SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (3): 709-716.doi: 10.1016/j.cjche.2018.09.014

• Materials and Product Engineering • Previous Articles     Next Articles

Nitrogen-doped hierarchical porous carbon from polyaniline/silica self-aggregates for supercapacitor

Peipei Li1,2, Dazhi Zhang2, Yunhui Xu2, Caihua Ni1, Gang Shi1, Xinxin Sang1   

  1. 1 Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China;
    2 Xuzhou College of Industrial Technology, Xuzhou 221140, China
  • Received:2018-04-19 Revised:2018-08-10 Online:2019-03-28 Published:2019-04-25
  • Contact: Caihua Ni,E-mail addresses:nicaihua2000@163.com,nicaihua2014@126.com;Gang Shi,E-mail addresses:shigang@jiangnan.edu.cn E-mail:nicaihua2000@163.com,nicaihua2014@126.com;shigang@jiangnan.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China (21401079,21501069),Fundamental Research Funds for Central Universities (JUSRP51626B),the Natural Science Foundation of Jiangsu Province of China (BK20140158,BK20161128,BK20161166),Natural Science Fund for Colleges and Universities in Jiangsu Province (18KJD430008,17KJD430005,17KJB430032) and the Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (PPZY2015B181).

Abstract: In this paper, nitrogen-doped hierarchical porous carbon (N-HPC) was prepared from polyaniline (PANI)/silica self-aggregates. H-bonding between N\\H groups in aniline/PANI and\\OH groups in nano silica template led to a self-assembly type, which enabled the formation of uniform N-HPC nanoparticles. Silica self-aggregates provided macroporous channels resulted in a decreased diffusion distance. After removing the hard template, the N-HPC had a high surface area (899 m2·g-1). Owing to two co-existed synergetic energy-storage mechanisms and the hierarchical porous structure, the obtained N-HPC exhibited a high specific capacitance of 218.75 F·g-1 at 0.5 A·g-1, compared with the nonporous nitrogen-doped carbon (N-C) derived from pure PANI. Moreover, the N-HPC electrode demonstrated excellent cycle life, retaining 99% of its initial specific capacitance after 1000 cycles.

Key words: Nitrogen-doped, Hierarchical porous carbon, Hard template, Silica self-aggregates