Porous nitrogen-enriched hollow carbon nanofibers as freestanding electrode for enhanced lithium storage
Energy, Resources and Environmental Technology|Updated:2026-01-06
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Porous nitrogen-enriched hollow carbon nanofibers as freestanding electrode for enhanced lithium storage
Porous nitrogen-enriched hollow carbon nanofibers as freestanding electrode for enhanced lithium storage
中国化学工程学报(英文版)2021年32卷第4期 页码:416-422
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
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:
Porous nitrogen-enriched hollow carbon nanofibers as freestanding electrode for enhanced lithium storage
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
3
-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
2
·g
-1
) compared to the carbon without NH
3
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
3
treatment.
关键词
Keywords
references
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相关作者
Wen Wei
Meng Xiangyu
Liu Min
Du Xiaoqiang
Zhang Xiaoshuang
Rui Xue
Runfan Zheng
Yanyan Xie
相关机构
Department of Chemistry, Xinzhou Normal University
Henan Provincial Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College
School of Chemistry and Chemical Engineering, North University of China
School of Environment and Safety Engineering, North University of China
School of Chemistry and Chemical Engineering, Chongqing University