期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 46, 页码 40645-40654出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b12229
关键词
parafilm; hollow graphene fibers; flexible transparent supercapacitors; oil spill; plastic wastes
资金
- MOST (Taiwan)
- [104-2221-E-007-029-MY3]
- [MOST 104-2811-E-007-06]
- [MOST104-2112-M-194-002-MY3]
We report a versatile strategy to exploit parafilm waste as a carbon precursor for fabrication of freestanding, hollow few-layer graphene fiber mesh (HFGM) structures without use of any gaseous carriers/promoters via an annealing route. The freestanding HFGMs possess good mechanical flexibility, tailorable transparency, and high electrical conductivity, consequently qualifying them as promising electrochemical electrodes. Because of the hollow spaces, electrolyte ions can easily access into and contact with interior surfaces of the graphene fibers, accordingly increasing electrode/electrolyte interfacial area. As expected, solid-state supercapacitors based on the HFGMs exhibit a considerable enhancement in specific capacitance (20-30 fold) as compared to those employing chemical vapor deposition compact graphene films. Moreover, the parafilm waste is found to be beneficial for one-step fabrication of nanocarbon/few-layer graphene composite meshes with superior electrochemical performance, outstanding superhydrophobic property, good self-cleaning ability, and great promise for oil spill cleanup.
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