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Issue 44, 2019
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N-doped CoSb@C nanofibers as a self-supporting anode for high-performance K-ion and Na-ion batteries

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Abstract

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.

Graphical abstract: N-doped CoSb@C nanofibers as a self-supporting anode for high-performance K-ion and Na-ion batteries

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Article information


Submitted
02 Sep 2019
Accepted
07 Oct 2019
First published
18 Oct 2019

J. Mater. Chem. A, 2019,7, 25268-25273
Article type
Communication

N-doped CoSb@C nanofibers as a self-supporting anode for high-performance K-ion and Na-ion batteries

J. Han, K. Zhu, P. Liu, Y. Si, Y. Chai and L. Jiao, J. Mater. Chem. A, 2019, 7, 25268
DOI: 10.1039/C9TA09643D

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