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Biomass-derived carbon from Ganoderma lucidum spore as a promising anode material for rapid potassium-ion storage.
- Source :
-
Journal of Colloid & Interface Science . May2020, Vol. 567, p256-263. 8p. - Publication Year :
- 2020
-
Abstract
- Biomass-derived carbon from Ganoderma Lucidum Spore as a promising anode material for rapid potassium-ion storage on large scale. The design and preparation of powerful anode materials are key to developing potassium-ion batteries. A biomass-based potassium anode material with a distinct hollow-cage structure was prepared by one-step carbonization. The target carbon exhibited a specific surface area of 104.4 m2 g−1 and mesopores/macropores distributed materials. When used as the negative electrode of a potassium-ion battery, the cage-like porous carbon (CPC) showed a reversible capacity of 407 mAh g−1 after 50 cycles at 50 mA g−1 current density. After 100 cycles, at a current density of 200 mA g−1, the reversible capacity was 163.8 mAh g−1. It still exhibits an extremely long cycle stability at high current densities (discharge capacity of 124.6 mAh g−1 after 700 cycles at a current density of 1 A g−1). The excellent performance is attributed to the stable cage-like carbon scaffold and uniform continuous distribution of mesopores/macropores to improve ion diffusion kinetics and electronic conductivity. These results indicate that a properly designed CPC can effectively increase the capacity and cycle stability of a potassium-ion battery. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 567
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 142318775
- Full Text :
- https://doi.org/10.1016/j.jcis.2020.02.023