期刊
CHEMOSPHERE
卷 289, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2021.133225
关键词
Lotus plant; Lotus carbon; Carbonization; Supercapacitor; Renewable energy storage
资金
- National Research Foundation of Korea (NRF) - Korean government MSIT [2021R1A2B5B02002436]
A simple, low-cost, and green route for preparing lotus carbon (LC) materials from different parts of the lotus plant has been reported. The fruit-carbon (FR-carbon) derived from lotus fruits showed promising performance in supercapacitor applications, with a high specific capacitance, good rate performance, and cycling stability.
A simple, low-cost, and green route for the preparation of lotus carbon (LC) materials using lotus parts including leaves, flowers, fruits (seed pods), and stems as a renewable precursor is reported. Different porous carbons, leafcarbon (LF-carbon), flower-carbon (FL-carbon), fruit-carbon (FR-carbon), and stem-carbon (ST-carbon) were synthesized from different parts of the lotus plant by simple carbonization method. The as-synthesized LC materials were well-characterized by many techniques such as electron microscopy and spectroscopy techniques, Xray diffraction, and BET-surface area analysis. These techniques confirmed the porous structure of LC materials and the existence of heteroatoms in the prepared LC materials. The mesoporous structure of LC materials suggested employing it for the supercapacitor applications. The obtained FR-Carbon exhibits a high specific capacitance of 160 F/g in a three-electrode system in an aqueous 1 M H2SO4 electrolyte with a high rate performance of 52% retention from 0.5 to 5.0 A/g with good cycling stability of 95%. These results indicate that the porous carbon derived from lotus fruits is a potential electrode material for high-performance supercapacitors.
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