Journal
ACS NANO
Volume 4, Issue 4, Pages 1963-1970Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn1000035
Keywords
graphene; polyaniline nanofiber; supercapacitor; composite; flexible
Categories
Funding
- National Natural Science Foundation of China [50873052, 20774056, 50533030]
- Open Research Fund of State Key Lab of Bio-electronics of China
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Composite films of chemically converted graphene (CCG) and polyaniline nanofibers (PANI-NFs) were prepared by vacuum filtration the mixed dispersions of both components. The composite film has a layered structure, and PANI-NFs are sandwiched between CCG layers. Furthermore, it is mechanically stable and has a high flexibility; thus, it can be bent into large angles or be shaped into various desired structures. The conductivity of the composite film containing 44% CCG (5.5 x 10(2) S m(-1)) is about 10 times that of a PANI-NF film. Supercapacitor devices based on this conductive flexible composite film showed large electrochemical capacitance (210 F g(-1)) at a discharge rate of 0.3 A g(-1). They also exhibited greatly improved electrochemical stability and rate performances.
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