Flexible micro-supercapacitor based on in-situ assembled graphene on metal template at room temperature

Journal Article · Sat Nov 01 00:00:00 EDT 2014 · Nano Energy

DOI:https://doi.org/10.1016/j.nanoen.2014.09.019· OSTI ID:1211092

Wu, ZK; Lin, ZY; Li, LY; Song, B; Moon, KS; Bai, SL; Wong, CP

Graphene based micro-supercapacitors (MSCs) have been extensively studied in recent years; however, few of them report room temperature fabricating methods for flexible MSC. Here we developed a convenient procedure based on simultaneous self-assembly and reduction of graphene oxide (GO) on Cu/Au interdigit at room temperature. The as-produced MSC shows a specific areal capacitance of 0.95 mF cm(-2) and maintains 98.3% after 11,000 cycles of charge and discharge. Extremely small relaxation time constants of 1.9 ms in aqueous electrolyte and 4.8 ms in gelled electrolyte are achieved. Also the device shows great flexibility and retains 93.5% of the capacitance after 5000 times of bending and twisting tests. (C) 2014 Elsevier Ltd. All rights reserved.

• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• DOE Contract Number: DE-AR0000303
• OSTI ID: 1211092
• Journal Information: Nano Energy, Vol. 10; ISSN 2211-2855
• Country of Publication: United States
• Language: English