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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Agriculture / Faculty of Agriculture >
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Assembly of electric double-layer capacitors with hardwood kraft lignin-based electrodes and separator together with ionic liquid electrolyte
| Title: | Assembly of electric double-layer capacitors with hardwood kraft lignin-based electrodes and separator together with ionic liquid electrolyte |
| Authors: | Pakkang, Nutthira Browse this author | | Suzuki, Shiori Browse this author →KAKEN DB | | Shigetomi, Kengo Browse this author →KAKEN DB | | Uraki, Yasumitsu Browse this author →KAKEN DB |
| Keywords: | electric double layer capacitor | | electrode | | kraft lignin | | separator | | supercapacitor |
| Issue Date: | 15-Dec-2022 |
| Publisher: | Walter de Gruyter |
| Journal Title: | Holzforschung |
| Volume: | 77 |
| Issue: | 2 |
| Start Page: | 119 |
| End Page: | 126 |
| Publisher DOI: | 10.1515/hf-2022-0143 |
| Abstract: | This study aimed to assemble a high-performance electric double-layer capacitor (EDLC) using a hardwood kraft lignin (HKL)-based separator and HKL-based electrodes, which were fabricated from a nonwoven mat of electrospun HKL fibers. The separator was prepared by the thermostabilization of the mat derived from a mixed dope of HKL, hexamethylenetetramine, and polyethylene glycol (1.66/0.50/0.09, w/w) for electrospinning. Although a mat-type HKL-based electrode containing conductive carbon black (CB) has been reported to be suitable for a commercial cellulosic separator, this electrode was found to be unsuitable for the HKL-based separator because of its rough surface and poor contact with the separator interface. Hence, a powder-type electrode with a smooth surface was fabricated by grinding the mat, followed by casting with a carboxymethyl cellulose aqueous solution, and its EDLC possessed high energy (49 Wh kg(-1)) and power densities (151 kW kg(-1)). Moreover, to provide a simple process for electrode fabrication, another mat-type electrode was fabricated by adding CB to the mixed dope, followed by electrospinning, carbonization, and steam activation. The resultant EDLC exhibited excellent electrochemical performance with energy (58 Wh kg(-1)) and power densities (55 kW kg(-1)). |
| Type: | article |
| URI: | http://hdl.handle.net/2115/90926 |
| 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)
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Submitter: 鈴木 栞
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