Journal
COMPOSITES PART B-ENGINEERING
Volume 71, Issue -, Pages 40-44Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2014.11.039
Keywords
Hybrid; Interface/interphase; Assembly
Funding
- National Science Foundation (CMMI) [1129914]
- NSF CAREER Award (CMMI) [0953674]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1535826] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1228127, 1129914] Funding Source: National Science Foundation
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Multilayered ordered nanostructures were fabricated by assembling in-situ grown polyaniline nanowire arrays with graphene oxide nanosheets. As-fabricated nanostructure was subsequently impregnated with the (H3PO4-Nafion)/polyvinyl alcohol solution to create a multiphase composite, which was used as a solid-state supercapacitor where graphene oxide/polyaniline nanowires served as electrode and (H3PO4-Nafion)/polyvinyl alcohol served as solid electrolyte. The ordered polyaniline (PANI) nanostructures facilitated the charge transfer and resulted in the specific capacitance of 83 F/g even if the discharge current was 5 A/g. The efficient charge transportation and electrode-electrolyte interaction resulted in small equivalent series resistance as low as 5.83 Omega, and thus outstanding electrochemical performance. The charge transfer resistance was much smaller than other commonly used solid-state electrolyte and almost negligible. As a result only 7% capacitance loss was found when the frequency increased from 100 to 1000 Hz. The energy density was as high as 26.5 Wh/kg while the power density was similar to 3600 W/kg. The energy storage performance was also very stable since 82% specific capacitance was maintained after 1000 cycles. (C) 2014 Elsevier Ltd. All rights reserved.
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