Journal
RSC ADVANCES
Volume 4, Issue 70, Pages 36996-37002Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra05076b
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Funding
- AFOSR [FA9550-12-1-0069, FA9550-12-1-0037]
- NSF [CMMI-1266295, DMR-1106160]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1106160] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1266319] Funding Source: National Science Foundation
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Graphene network (GN) was synthesized by a two-step chemical vapour deposition (CVD) method, involving the thermal annealing sputter-coated Cu film to form a Cu network by annealing for CVD deposition of graphene onto the Cu network catalyst. The resultant graphene network was transferred onto a flexible and transparent polymer (e.g., PDMS) substrate while maintaining its porous structure and integrated interconnection, providing both good optical transparency (e.g., transmittance of 86% at 550 nm wavelength) and mechanical flexibility. Flexible and transparent all-solid-state supercapacitors based on the newly-developed graphene network were fabricated to exhibit an area specific capacitance of 4.2 mF cm(-2) at a discharge current of 0.1 mu A with a high optical transparency (transmittance of 84%), which outperforms devices based on uniform multi-layer graphene sheet.
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