Fallen-leaf-derived microporous pyropolymers for supercapacitors

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• 作者：Hong Joo An^a ; ¹ ; Na Rae Kim^a ; ¹ ; Min Yeong Song^a ; Young Soo Yun^b ; ^{ysyun@kangwon.ac.kr} ; Hyoung-Joon Jin^a ; ^{hjjin@inha.ac.kr}
• 关键词：Biomass ; Porous carbon ; Electrode ; Pyropolymer ; Supercapacitor
• 刊名：Journal of Industrial and Engineering Chemistry
• 出版年：2017
• 出版时间：25 January 2017
• 年：2017
• 卷：45
• 期：Complete
• 页码：223-228
• 全文大小：2557 K
• 卷排序：45

文摘

In this study, microporous pyropolymers (GL-AMPs), a carbon-based material, were fabricated from ginkgo leaves by simple pyrolysis with KOH, followed by acid treatment. The GL-AMPs were mainly composed of aromatic hexagonal carbon layers, which were not well stacked, and contained many redox-active heteroatoms such as oxygen and nitrogen. In addition, the GL-AMPs had a high specific surface area of ∼1348.4 m2 g−1 with numerous ultramicropores (<0.7 nm). These unique material characteristics led to a significantly high specific capacitance of ∼731 F g−1, high rate capabilities, and stable cycling performance over 1000 cycles in a redox-mediated aqueous electrolyte.