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Preparation and Application in Supercapacitors of Shiitake Biomass-Based Nitrogen-Doped Microporous Carbon
Author NameAffiliationE-mail
HU Qing-Tao School of Chemistry and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China  
ZHANG Wen-Da School of Chemistry and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China  
LI Tao School of Chemistry and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China  
YAN Xiao-Dong School of Chemistry and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China xiaodong.yan@jiangnan.edu.cn 
GU Zhi-Guo School of Chemistry and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Wuxi, Jiangsu 214122, China 		zhiguogu@jiangnan.edu.cn 
Abstract: Shiitake-derived nitrogen-doped microporous carbon materials were prepared by a simple activation/carbonization process. It was found that the nitrogen content was enhanced owing to the consumption of carbon in the activation process, and that the pyridinic nitrogen groups were promoted after activation. The microporous carbons offered a high specific surface area of 1 930 m2·g-1 with a high micropore surface area of 1 594 m2·g-1. The high micropore surface area accompanied with rich nitrogen and oxygen groups contributed to a remarkable specific capacitance of 325 F·g-1 at 0.5 A·g-1 and high rate capability. In addition, shiitake-derived microporous carbons presented robust cycling stability with 2.3% capacitance loss during 5 000 cycles, and a high specific capacitance of 203 F·g-1 at 0.5 A·g-1 in symmetric supercapacitors. The high performance could be attributed to the high surface area, enhancing electric double layer capacitance, and numerous nitrogen groups.
Keywords: supercapacitors  carbon  microporous materials  carbonization  nitrogen doping
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HU Qing-Tao,ZHANG Wen-Da,LI Tao,YAN Xiao-Dong,GU Zhi-Guo.Preparation and Application in Supercapacitors of Shiitake Biomass-Based Nitrogen-Doped Microporous Carbon[J].Chinese Journal of Inorganic Chemistry,2020,36(8):1573-1581.
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Chinese Journal of Inorganic Chemistry