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

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Hollow carbon nanofibers as high-performance anode materials for sodium-ion batteries†
Nanoscale ( IF 5.8 ) Pub Date : 2019-10-15 , DOI: 10.1039/c9nr07675a
Haixia Han _{1,

2,

3,

4,

5} , Xiaoyang Chen _{1,

2,

3,

4,

5} , Jiangfeng Qian _{1,

2,

3,

4,

5} , Faping Zhong _{5,

6,

7} , Xiangming Feng _{5,

8,

9,

10} , Weihua Chen _{5,

8,

9,

10} , Xinping Ai _{1,

2,

3,

4,

5} , Hanxi Yang _{1,

2,

3,

4,

5} , Yuliang Cao _{1,

2,

3,

4,

5}

Affiliation

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).

中文翻译：

中空碳纳米纤维作为钠离子电池的高性能负极材料†

中空碳纳米纤维（HCNFs）是通过聚苯胺中空纳米纤维前体的热解成功制备的。所制备的HCNFs作为存储钠阳极材料表现出326毫安汞柱高的可逆充电容量^-1在20mA克^-1，高倍率性能（85毫安汞柱^-1 1.6 A G ^-1）和优异的循环稳定性（即使在1.6 A g ^-1下经过5000次循环后，容量保持率仍为70％）。HCNF的这种高性能归因于特殊的中空结构特性。它们具有精心制作的电子传输路径，可以缩短离子扩散距离。因此，HCNF可被视为高级钠离子电池（SIB）的有希望的负极材料。

更新日期：2019-11-21

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