Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 7, Issue 44, Pages 25268-25273Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta09643d
Keywords
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Funding
- National Natural Science Foundation of China [51622102, 21421001]
- Natural Science Foundation of Tianjin [18ZXJMTG00040, 19JCZDJC31800]
- MOST [2017YFA0206702, 2016YFB0901502]
- 111 Project [B12015]
- Fundamental Research Funds for the Central Universities
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Herein, the preparation of CoSb nanoparticles embedded in carbon nanofibers with a raised surface (N-doped CoSb@C nanofibers) via the electrospinning method is reported for the first time. The distinct structure facilitates the pseudocapacitive behaviors, which is the key to obtain fast kinetics and long cyclability. N and Co elements can not only optimize the electronic configuration but also buffer the volume changes of the material during cycling. For potassium-ion batteries, the capacity maintains 250 mA h g(-1) after 500 cycles at 1 A g(-1), and for sodium-ion batteries, the capacity keeps 413 mA h g(-1) after 1000 cycles at 1 A g(-1). Thus, this work makes a great contribution towards exploring high-capacity anodes for practical potassium-ion batteries and sodium-ion batteries.
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