Solid-state supercapacitor based on activated carbon cloths exhibits excellent rate capability.
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.
Department of Chemistry and Biochemistry, University of California, Santa Cruz, California, 95064, USA.
Gongming
G
Wang
Hanyu
H
Wang
Xihong
X
Lu
Yichuan
Y
Ling
Minghao
M
Yu
Teng
T
Zhai
Yexiang
Y
Tong
Yat
Y
Li
activated-carbon cloth; energy storage; rate capability; solid-state supercapacitors; ultrafast charging