Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Agriculture / Faculty of Agriculture >
Peer-reviewed Journal Articles, etc >
Preparation of kraft lignin-based activated carbon fiber electrodes for electric double layer capacitors using an ionic liquid electrolyte
This item is licensed under:Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Title: | Preparation of kraft lignin-based activated carbon fiber electrodes for electric double layer capacitors using an ionic liquid electrolyte |
Authors: | Pakkang, Nutthira Browse this author | Kumar, Manish Browse this author | Taira, Shogo Browse this author | Koda, Keiichi Browse this author →KAKEN DB | Shigetomi, Kengo Browse this author →KAKEN DB | Uraki, Yasumitsu Browse this author →KAKEN DB |
Keywords: | conductive carbon black | electric double layer capacitor | hardwood kraft lignin | ionic liquid electrolyte |
Issue Date: | 30-May-2020 |
Publisher: | Walter de Gruyter |
Journal Title: | Holzforschung |
Volume: | 74 |
Issue: | 6 |
Start Page: | 577 |
End Page: | 588 |
Publisher DOI: | 10.1515/hf-2019-0291 |
Abstract: | This article demonstrates the development of activated carbon fiber electrodes produced from hardwood kraft lignin (HKL) to fabricate electric double layer capacitors (EDLCs) with high energy and power densities using an ionic liquid (IL) electrolyte. A mixture solution of HKL, polyethylene glycol as a sacrificial polymer, and hexamethylenetetramine as a crosslinker in dimethylformamide/acetic acid (6/4) was electrospun, and the obtained fibers were easily thermostabilized, followed by carbonization and steam activation to yield activated carbon fibers (ACFs). The electrochemical performance of EDLCs assembled with the ACFs, 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4) as an IL electrolyte and a cellulosic separator was insufficient due to the low conductivity of the electrode. The conductivity of the electrode was improved successfully by spraying conductive carbon black (CB) onto the fibers mat during electrospinning. The CB containing electrodes with improved conductivity gave the resulting EDLCs a higher electrochemical performance, with an energy density of 91.5 Wh kg(-1) and a power density of 76.2 kW kg(-1). |
Rights: | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
Type: | article |
URI: | http://hdl.handle.net/2115/81610 |
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
|