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Preparation of electrode for electric double layer capacitor from electrospun lignin fibers

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Title: Preparation of electrode for electric double layer capacitor from electrospun lignin fibers
Authors: You, Xiangyu Browse this author
Koda, Keiichi Browse this author
Yamada, Tatsuhiko Browse this author
Uraki, Yasumitsu Browse this author →KAKEN DB
Keywords: electric double layer capacitor
lignin-based activated carbon fibers
pore size distribution
surface area
Issue Date: Nov-2015
Publisher: Walter de Gruyter
Journal Title: Holzforschung
Volume: 69
Issue: 9
Start Page: 1097
End Page: 1106
Publisher DOI: 10.1515/hf-2014-0262
Abstract: Lignin-based activated carbon fibers (ACFs) were prepared by electrospinning of hardwood acetic acid lignin (HW-AAL) solution followed by thermostabilization, carbonization, and steam activation. The thermostabilization process was able to be remarkably shortened from 38 h to 3 h with hexamethylenetetramine (hexamine) in binary solvents, AcOH/CCl4 (8/2), when compared with conventional thermostabilization processes. The resultant ACFs possessed higher specific surface area (2185 m(2) g(-1)) than those from commercial activated carbon and electrospun lignin fibers without hexamine. These ACFs also exhibited good electrical capacitance (133.3 F g(-1) at a current density of 1 A g(-1)) as electrodes of electric double layer capacitor (EDLC) are efficient not only due to their large surfaces area but also due to their porous structure with well-developed micropores (diameter: 0.5-1.3 nm). High energy density and power density of this EDLC (42 Wh kg(-1) and 91 kW kg(-1), respectively) were also achieved.
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 浦木 康光

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