Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 6, Pages 3776-3783Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b10196
Keywords
activated carbon cloth; V2O5; polyindole; flexible; asymmetric supercapacitors
Funding
- National Natural Science Foundation of China [51272100, 51273073]
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A bamboo-like nanomaterial composed of V2O5/polyindole (V2O5/PIn) decorated onto the activated carbon cloth was fabricated for supercapacitors. The PIn could effectively enhance the electronic conductivity and prevent the dissolution of vanadium. And the activation of carbon cloth with functional groups is conducive to anchoring the V2O5 and improving surface area, which results in an enhancement of electrochemical performance and leads to a high specific capacitance of 535.5 F/g. Moreover, an asymmetric flexible supercapacitor based on V2O5/PIn(a)activate carbon cloth and reduced graphene oxide (rGO)@activate carbon cloth exhibits a high energy density (38.7 W h/kg) at a power density of 900 W/kg and good cyclic stability (capacitance retention of 91.1% after 5000 cycles). And the prepared device is shown to power the light-emitting diode bulbs efficiently.
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