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Solid‐State Supercapacitor Based on Activated Carbon Cloths Exhibits Excellent Rate Capability
Author(s) -
Wang Gongming,
Wang Hanyu,
Lu Xihong,
Ling Yichuan,
Yu Minghao,
Zhai Teng,
Tong Yexiang,
Li Yat
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201304756
Subject(s) - supercapacitor , materials science , capacitance , capacitive sensing , activated carbon , electrode , solid state , carbon fibers , horizontal scan rate , nanotechnology , chemical engineering , optoelectronics , composite material , electrochemistry , engineering physics , electrical engineering , cyclic voltammetry , composite number , organic chemistry , chemistry , adsorption , engineering
Activated carbon cloth is used as an electrode, achieving an excellent areal capacitance of 88 mF/cm 2 (8.8 mF/g) without the use of any other capacitive materials. Significantly, when it is incorporated as part of a symmetric solid‐state supercapacitor device, a remarkable charge/discharge rate capability is observed; 50% of the capacitance is retained when the charging rate increases from 10 to 10 000 mV/s.