Porous nitrogen-enriched hollow carbon nanofibers as freestanding electrode for enhanced lithium storage

Xiaosa Xu; Yuqian Qiu; Jianping Wu; Baichuan Ding; Qianhui Liu; Guangshen Jiang; Qiongqiong Lu; Jiangan Wang; Fei Xu; Hongqiang Wang

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Porous nitrogen-enriched hollow carbon nanofibers as freestanding electrode for enhanced lithium storage

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Porous nitrogen-enriched hollow carbon nanofibers as freestanding electrode for enhanced lithium storage
- Chinese Journal of Chemical Engineering Vol. 32, Issue 4, Pages: 416-422(2021)
- Affiliations：
  
  1. State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi'an,China,710072
  2. Leibniz Institute for Solid State and Materials Research(IFW) Dresden e. V., Helmholtzstr 20,Dresden,Germany,01069
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2021
- Accepted：
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Xiaosa Xu, Yuqian Qiu, Jianping Wu, Baichuan Ding, Qianhui Liu, Guangshen Jiang, Qiongqiong Lu, Jiangan Wang, Fei Xu, Hongqiang Wang. Porous nitrogen-enriched hollow carbon nanofibers as freestanding electrode for enhanced lithium storage[J]. Chinese Journal of Chemical Engineering, 2021, 32(4): 416-422.
DOI：

Xiaosa Xu, Yuqian Qiu, Jianping Wu, Baichuan Ding, Qianhui Liu, Guangshen Jiang, Qiongqiong Lu, Jiangan Wang, Fei Xu, Hongqiang Wang. Porous nitrogen-enriched hollow carbon nanofibers as freestanding electrode for enhanced lithium storage[J]. Chinese Journal of Chemical Engineering, 2021, 32(4): 416-422. DOI：

摘要

Abstract

One-dimensional porous carbons bearing high surface areas and sufficient heteroatom doped functionalities are essential for advanced electrochemical energy storage devices

especially for developing freestanding film electrodes. Here we develop a porous

nitrogen-enriched

freestanding hollow carbon nanofiber (PN-FHCF) electrode material

via

filtration of polypyrrole (PPy) hollow nanofibers formed by in situ self-degraded template-assisted strategy

followed by NH

-assisted carbonization. The PN-FHCF retains the freestanding film morphology that is composed of three-dimensional networks from the entanglement of 1D nanofiber and delivers 3.7-fold increase in specific surface area (592 m

·g

-1

) compared to the carbon without NH

treatment (FHCF). In spite of the enhanced specific surface area

PNFHCF still exhibits comparable high content of surface N functionalities (8.8%

atom fraction) to FHCF. Such developed hierarchical porous structure without sacrificing N doping functionalities together enables the achievement of high capacity

high-rate property and good cycling stability when applied as self-supporting a

node in lithium-ion batteries

superior to those of FHCF without NH

treatment.

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