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PAPER
Mesoporous hollow carbons on graphene and their electrochemical properties관리자2020-05-11 조회 2,284 댓글 0이메일주소 site@site.co.kr Author GH Jeong, I Lee, J-G Kang, H Lee, S Yoon, S-W Kim Journal RSC Advances Year of Pub. 2015
We report the formation of mesoporous hollow carbons with diameters of about 30–40 nm on a graphene (MHCG) surface formed using graphite, the surfactant Pluronic F-127, and porous silica on the graphene as a template to produce a sheet. The specific surface area of the sample produced is 1793.45 m2 g−1, which is hundreds of times larger than that of graphite (31.38 m2 g−1). When applied to supercapacitor electrodes, the MHCG electrode exhibits outstanding maintenance of energy density above 30 W h kg−1 even under 1 kW kg−1 power density, which is attributed to extremely fast electron supply through graphene layers and facile penetration of electrolyte through highly-developed mesopores.
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