N-doped carbon foam based three-dimensional electrode architectures and asymmetric supercapacitors

Jie Wang, Laifa Shen, Ping Nie, Xiaoliang Yun, Yunling Xu, Hui Dou, Xiaogang Zhang*

*この研究の対応する著者

研究成果: Article査読

69 被引用数 (Scopus)

抄録

Improving the electrochemical performance of supercapacitors mainly depends on the electrode design and system construction. A new kind of additive-free asymmetric supercapacitors (ASCs) has been successfully fabricated using a self-supported carbon foam/ordered mesoporous carbon (CF-OMC) film as the negative electrode and free-standing CF-NiCo2O4 nanosheets (NSs) as the positive electrode, respectively. The highly conductive three-dimensional (3D) CF framework could facilitate electron transfer while the porous thin film of OMC and ultrathin NiCo2O4 nanosheets could shorten the ion diffusion path and facilitate the rapid migration of electrolyte ions. The optimized asymmetric supercapacitors could work with an operational voltage of 1.6 V, delivering a high energy density (∼47.8 W h kg-1), high power density (∼9800 W kg-1 at 17.7 W h kg-1) and outstanding cycle stability (∼10 000 times). This research may pave the way for fabricating lightweight, low-cost, and high-performance electrodes for energy storage applications.

本文言語English
ページ(範囲)2853-2860
ページ数8
ジャーナルJournal of Materials Chemistry A
3
6
DOI
出版ステータスPublished - 2015 2月 14
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 再生可能エネルギー、持続可能性、環境
  • 材料科学(全般)

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