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| Regulation of the Pore Structure of Bagasse-based Activated Carbon and Its Effect on the Electrochemical Properties of Supercapacitor |
| Received:August 04, 2020 |
| DOI：10.11981/j.issn.1000-6842.2021.02.39 |
| Key Words:bagasse;activated carbon;pore structure regulation;supercapacitor;electrochemical performance |
| Fund Project:国家自然科学基金项目（21766002)；2018年广西工业职业技术学院科研立项项目《微纤化纤维素复合材料制备OLED基材的研究》。 |
| Author Name | Affiliation | Postcode | | ZHAO Siyu* | College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 | | LI Yao | Guangxi Vocational & Technical Institute of Industry， Nanning， Guangxi Zhuang Autonomous Region， 530001 | 530001 | | FAN Hanhan | College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 | | HE Hui | College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 | | SONG Xueping | College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 |
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| Abstract: |
| Three activators （KOH， ZnCl2， H3PO4） were respectively used to activate bagasse and three kinds of activated carbons， i.e.， microporous activated carbon KAC， micro mesoporous activated carbon ZAC， and micro meso-macroporous activated carbon PAC were successfully prepared. The results showed that the abovementioned three activators were capable of regulating the pore structures of bagasse-based activated carbons. The chemical analysis showed that the as-prepared activated carbons mainly contained C， H， N， and O elements， and the contents of C and O were the largest. All of them contained different amounts of C=C， C—C， and C=O functional groups. Physical analysis presented that ZAC had the largest pore volume of 0.65 cm3/g and the highest graphitization degree among the three activated carbons. ZAC exhibited high specific capacitance （282 F/g）， excellent rate performance （212 F/g， stablizing at 10 A/g） as well as good cycle stability （maintaining a specific capacitance of 98.5% during 1000 cycles） in a double-layer capacitor of the three-electrode system. The energy density of the double-assembled ZAC/ZAC symmetrical supercapacitor was 39.2 Wh/kg， higher than that of the general commercial electrodes （<10 Wh/kg）， which endowed it great potential as a supercapacitor electrode material. |
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