Journal
JOURNAL OF POWER SOURCES
Volume 284, Issue -, Pages 146-153Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2015.03.015
Keywords
Supercapacitors; Graphene; Electrochemical performance; Energy storage
Funding
- World Class University program by Korean National Research Foundation [R31-10026]
- National Science Foundation [CMMI-0928888]
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Graphene supercapacitors with a high electrode surface area have great potential in efficient energy storage. For practical applications, it is critical to develop highly-manufacturable methods to synthesize graphene nanosheets with high ion accessibility and uniform pore-sizes. Here we demonstrate a nontoxic approach for graphene synthesis which involves a low vacuum annealing at an easy-to-reach temperature. The supercapacitors based on the low-temperature exfoliated graphene materials show excellent electrochemical performance superior to those synthesized by high-temperature methods. Our investigation presents an efficient, yet industry-compatible and low cost way that can be scaled up for mass production of graphene for electrochemical energy storage application. (C) 2015 Elsevier B.V. All rights reserved.
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