Hollow carbon nanofibers as high-performance anode materials for sodium-ion batteries

Hollow carbon nanofibers (HCNFs) are successfully fabricated by pyrolyzation of a polyaniline hollow nanofiber precursor. The as-prepared HCNFs as sodium storage anode materials exhibit a high reversible charge capacity of 326 mA h g −1 at 20 mA g −1 , high rate capability (85 mA h g −1 at 1.6 A g −...

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Bibliographic Details
Published in:Nanoscale 2019-11, Vol.11 (45), p.21999-225
Main Authors: Han, Haixia, Chen, Xiaoyang, Qian, Jiangfeng, Zhong, Faping, Feng, Xiangming, Chen, Weihua, Ai, Xinping, Yang, Hanxi, Cao, Yuliang
Format: Article
Language:English
Subjects:
Anodes
Carbon fibers
Electrode materials
Electron transport
Ion diffusion
Nanofibers
Polyanilines
Rechargeable batteries
Sodium-ion batteries
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Summary:Hollow carbon nanofibers (HCNFs) are successfully fabricated by pyrolyzation of a polyaniline hollow nanofiber precursor. The as-prepared HCNFs as sodium storage anode materials exhibit a high reversible charge capacity of 326 mA h g −1 at 20 mA g −1 , high rate capability (85 mA h g −1 at 1.6 A g −1 ) and superior cycling stability (a capacity retention of 70% even after 5000 cycles at 1.6 A g −1 ). Such a high performance of HCNFs can be ascribed to the special hollow structure characteristics; they possess a well fabricated electronic transport path and can shorten the ion diffusion distance. Therefore, the HCNFs can be regarded as promising anode materials for advanced sodium ion batteries (SIBs). Hollow carbon nanofibers are fabricated by pyrolyzation of a polyaniline hollow nanofiber precursor, exhibiting impressive cycling stability for sodium-ion batteries.
ISSN:2040-3364
2040-3372
DOI:10.1039/c9nr07675a