Facile hydrothermal treatment route of reed straw-derived hard carbon for high performance sodium ion battery

Although hard carbon is deemed to be the most potential industrialized sodium-ion batteries anode material, there are still some problems need to be solved. In this study, a waste biomass of reed straw is pretreated by using a new strategy-hydrothermal treatment instead of pickling and successfully...

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Bibliographic Details
Published in:Electrochimica acta 2018-11, Vol.291, p.188-196
Main Authors: Wang, Jing, Yan, Lei, Ren, Qingjuan, Fan, Linlin, Zhang, Fuming, Shi, Zhiqiang
Format: Article
Language:English
Subjects:
Anode
Anodes
Batteries
Biomass
Carbon
Carbonization
Diffusion rate
Electrocatalysis
Electrochemical behavior
Electrode materials
Hard carbon
Hydrothermal treatment
Interlayers
Ion diffusion
Ions
Pickling
Rechargeable batteries
Sodium diffusion
Sodium ion battery
Sodium-ion batteries
Straw
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Summary:Although hard carbon is deemed to be the most potential industrialized sodium-ion batteries anode material, there are still some problems need to be solved. In this study, a waste biomass of reed straw is pretreated by using a new strategy-hydrothermal treatment instead of pickling and successfully transformed to hard carbon materials through subsequent carbonization process. The reed straw carbonized at 1300 °C exhibits an impressively high reversible capacity of 372.0 mAh g−1 with excellent initial coulombic efficiency of 77.03% and outstanding cycling stability. Significantly, the sodium storage mechanism in our electrodes is mainly summarized into two models. Moreover, we find the interlayer spacing of graphite-like nanocrystal of obtained hard carbon influences the sodium ion diffusion ability, thereby affecting the rate performance. Our work offers a simple and eco-friendly way for converting biomass to highly capacity carbon as well as a towardly anode material for sodium-ion batteries, which will open up new avenues of other biomass carbon materials with promising applications. [Display omitted]
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2018.08.136