期刊
DIAMOND AND RELATED MATERIALS
卷 110, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2020.108100
关键词
Hierarchical porous carbon; Used tea waste; Specific capacitance; Electrochemical studies; Energy and power density
类别
资金
- Vellore Institute of Technology (VIT) Chennai, Tamilnadu, India
It is still a difficulty to develop supercapacitor electrodes at a reasonable cost. The present work reports on the preparation of hierarchical porous carbon from tea wastes for supercapacitors application. Herein, the study finds a fruitful route for tea waste management wherein conversion of waste to worth resources is adopted. Waste tea leaves served as a raw material for the preparation of hierarchical porous carbons by two stage, process (precarbonization and chemical activation) aiming to produce a high performance supercapacitors electrode material. The samples were chemically activated using KOH in the temperature range, 600 degrees C to 900 degrees C after precarbonization. The BET surface area of the carbon samples were between 16 m(2) g(-1) to 1029 m(2) g(-1). The pore drilling and pore winding effect led to considerable development of well-defined micro-meso porosity. In particular, the hierarchical porous carbon prepared at 800 degrees C (WTC8) exhibited a superior performance for supercapacitor with highest capacitance of 490 F/g and over 99.7% capacitance retentivity even after 1000 cycles at 8 A/g. The outstanding electrochemical performance shows that hierarchical porous carbon electrodes derived from used tea solid waste behaves as a promising candidate for high performance supercapacitors and also proposes the proof of concept of waste to worth.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据