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Film of lignocellulosic carbon material for self-supporting electrodes in electric double-layer capacitors

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Author(s): Tsubasa Funabashi | Jun Mizuno | Masamichi Sato | Masao Kitajima | Makoto Matsuura | Shuichi Shoji

Journal: APL Materials
ISSN 2166-532X

Volume: 1;
Issue: 3;
Start page: 032104;
Date: 2013;
Original page

ABSTRACT
A novel thin, wood-based carbon material with heterogeneous pores, film of lignocellulosic carbon material (FLCM), was successfully fabricated by carbonizing softwood samples of Picea jezoensis (Jezo spruce). Simultaneous increase in the specific surface area of FLCM and its affinity for electrolyte solvents in an electric double-layer capacitor (EDLC) were achieved by the vacuum ultraviolet/ozone (VUV/O3) treatment. This treatment increased the specific surface area of FLCM by 50% over that of original FLCM. The results obtained in this study confirmed that FLCM is an appropriate self-supporting EDLC electrode material without any warps and cracks.
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