Preparation And Characterization Of Porous Carbon From Mixed Leaves For High-Performance Supercapacitors
CHINESE JOURNAL OF CHEMISTRY(2021)
Abstract
Main observation and conclusionWith 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.
MoreTranslated text
Key words
Biomass, Activated carbon, Supercapacitor, Electrochemistry, Energy conversion
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined