Surface activated commercial carbon cloth as superior electrodes for symmetric supercapacitors
Commercial carbon fiber (T300) cloth as the original material is surface-treated by a two-step approach, lastly becoming a high-performance electrode. This kind of electrode has a high specific capacitance (42.2 F g −1 ), which is nearly a hundred times that of the original carbon cloth. After fabricating these electrodes into a symmetric supercapacitor device, it provides a high specific energy of 4.64 W h kg −1 at a specific power of 10 W kg −1 . Furthermore, the device showed long cycling
stability (it keeps 92% capacitance retention after 1000 cycles), good rate capability, and low internal resistance. This work is expected to provide guidance for the research of structural supercapacitors based on commercial carbon cloth.
The increasing demand for sustainable energy sources has spurred research into advanced energy storage technologies, with supercapacitors showing significant promise.
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