文献类型：期刊文献

英文题名：Preparation and Characterization of Porous Carbon from Mixed Leaves for High-Performance Supercapacitors

作者：Yang, Xiaoxiang[1];Xu, Jie[1];Chen, Xin[1];Lei, Yuli[1];Wang, Lingling[1];Cheng, Siyu[1];Li, Yan[1];Lu, Yuxuan[1];Zhu, Yupeng[1];Chen, Na[1]

机构：[1]East China Univ Sci & Technol, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：39

期号：2

起止页码：353

外文期刊名：CHINESE JOURNAL OF CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000603406300001)】；

基金：We sincerely appreciate the financial supports for this work from the National Natural Science Foundation of China (21875066), Shanghai Leading Academic Discipline Project (B502), and the Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

外文关键词：Biomass; Activated carbon; Supercapacitor; Electrochemistry; Energy conversion

摘要：Main observation and conclusion With the increasing demand of sustainable and eco-friendly resources, it is very attractive to use waste leaves for activated carbon (AC) preparation that can be used in supercapacitors. Considering the practically collected leaves are commonly in mixed nature, and extra efforts are needed to sort these mixtures, we here report the first preparation of AC using mixed leaves from different plants, including Platanus acerifolia (PA), Firmiana platanifolia (FP) and Pistia stratiotes (PS), and compared the results with single leaves-derived AC materials. These leave-derived AC samples were characterized with FESEM, EDS, FTIR and Raman spectroscopy, and electrochemical tests. The AC derived from mixed leaves (PA(3)FP(1)PS(2)AC) showed a good specific capacitance of 246 F center dot g(-1) at 1 A center dot g(-1) in aqueous 3 mol center dot L-1 KOH. This sample further showed the largest specific capacitance of 201 F center dot g(-1) at 5 A center dot g(-1), as compared with the non-mixed AC samples, and a good stability of 100.0% capacitance retention over 1000 cycles. Utilizing mixed leaves for AC preparation is not only demonstrated to be a promising approach of low cost and high-performance AC production for supercapacitor applications, but may also help environmental protection by reducing the invasive species problem.