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Heteroatom-doped porous carbon with tunable pore structure and high specific surface area for high performance supercapacitors
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| Title: | Heteroatom-doped porous carbon with tunable pore structure and high specific surface area for high performance supercapacitors |
| Authors: | Kim, Cheong Browse this author | | Zhu, Chunyu Browse this author →KAKEN DB | | Aoki, Yoshitaka Browse this author →KAKEN DB | | Habazaki, Hiroki Browse this author →KAKEN DB |
| Keywords: | Supercapacitor | | Porous carbon | | Nitrogen-doping | | Cellulose | | Combustion synthesis |
| Issue Date: | 10-Aug-2019 |
| Publisher: | Elsevier |
| Journal Title: | Electrochimica acta |
| Volume: | 314 |
| Start Page: | 173 |
| End Page: | 187 |
| Publisher DOI: | 10.1016/j.electacta.2019.05.074 |
| Abstract: | Biomass-derived porous carbons with very high specific surface area (SSA) and heteroatom-doping are important for obtaining high performance supercapacitor. In this study, we report a simple and straightforward strategy, which involves the efficient and exothermic pyrolysis of Mg/K/Mg center dot K-nitrate-urea-cellulose mixture with subsequent high temperature carbonization and washing treatment, to produce N-doped porous carbon with tunable pore structure. The vigorous exothermic pyrolysis of Mg/K/Mg center dot K-nitrate-urea-cellulose induces the formation of large macropores. The subsequent high temperature carbonization and washing treatments remove Mg,K compounds and facilitate the creation of numerous micro and mesopores. The pore size distribution of the obtained carbon is quite dependent on the Mg center dot K ratio in the precursors. In this manner, the three-dimensional hierarchical porous carbon with SSA larger than 2700 m(2) g(-1) is obtained. The obtained porous carbon as the electrodes for supercapacitor in two-electrode measurement shows high specific capacitance (279 Fg(-1) at 1 A g(-1) in a 6 M KOH electrolyte), excellent cycling stability (larger than 89% capacitance retention after 10,000 cycles at 2 Ag-1) and good rate capability (235 Fg(-1) at even 30 Ag-1). These results indicate that biomass cellulose-derived heteroatom-doped hierarchical porous carbon is a promising material for supercapacitor. |
| Rights: | © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/82437 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 朱 春宇
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