Journal
ENERGY TECHNOLOGY
Volume 9, Issue 1, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.202000730
Keywords
bagasses; biomasses; electrochemistry; hard carbon anodes; sodium-ion full batteries
Categories
Funding
- Natural Science Foundation of China [51788104, 51772093, 51803054]
- National Postdoctoral Program for Innovative Talents [BX20200222]
- National Key R&D Program of China [2016YFA0202500]
- Postdoctoral Science Foundation [2020M682878]
- Double First-Class Construction Project of Hunan Agricultural University [SYL201802002, SYL201802008]
- Science and Technology Department of Hunan Province [2018RS3086]
- Distinguished Youth Foundation of Hunan Province [2019JJ20010]
- Foundation for the Cultivation of Excellent Doctoral Dissertation of Hunan Agricultural University [YB2018006]
- 1515 Talent Cultivation Plan of Hunan Agricultural University
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This study utilized bagasse, an abundant biological waste, as a carbon source to construct hard carbon anodes with moderate surface area, showing excellent cycling stability and high midpoint voltage. The concept of turning waste into treasure showcased in this research provides a new idea for the design of anode materials for sodium-ion batteries.
Hard carbon attracts great attention as an anode material for sodium-ion batteries (SIBs), due to its high conductivity and environmental benignity. However, the practical applications of hard carbon anodes are largely limited by the poor cycling stability and high cost. Herein, bagasse, one of the most abundant biological wastes, is used as a carbon source to construct hard carbon anodes by high-temperature thermal decomposition. This special material with moderate surface area exhibits long-term cycling stability (91.5% retention upon 800 cycles at 1000 mA g(-1)). Remarkably, the full battery delivers high midpoint voltage with 2.9 V and superior initial Coulombic efficiency with 93.1% as well as excellent cycling stability (61% retention upon 300 cycles at 125 mA g(-1)). The concept of turning waste into treasure provides an idea for the design of anode materials for SIBs.
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