文献类型：期刊文献

英文题名：In situ growth of amorphous Fe2O3 on 3D interconnected nitrogen-doped carbon nanofibers as high-performance anode materials for sodium-ion batteries

作者：Shi, Lu[1,2];Li, Ying[4];Zeng, Fanglei[3];Ran, Sijia[1];Dong, Chengyu[4];Leu, Shao-Yuan[4];Boles, Steven T.[1];Lam, Kwok Ho[1]

第一作者：Shi, Lu;史璐

通讯作者：Lam, KH[1]

机构：[1]Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China;[2]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China;[3]Changzhou Univ, Jiangsu Prov Cultivat Base State Key Lab Photovol, Jiangsu Collaborat Innovat Ctr Photovolta Sci & E, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China;[4]Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China

第一机构：Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

通讯机构：[1]corresponding author), Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China.

年份：2019

卷号：356

起止页码：107-116

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000447004100012)】；

基金：This work was financially supported by the Hong Kong Polytechnic University (1-ZVGH).

语种：英文

外文关键词：Sodium-ion batteries; First-principles calculations; Amorphous Fe2O3; 3D interconnected carbon nanofibers; Nitrogen doping; Electrochemical performance

摘要：In this work, a novel porous amorphous Fe2O3/nitrogen-doped carbon composite as a promising anode material for sodium-ion batteries has been fabricated by in situ growing amorphous Fe2O3 on 3D interconnected nitrogendoped carbon nanofibers. The as-prepared composite exhibits superior sodium storage properties. It delivers a high reversible capacity of 408 mA h g(-1) after 350 cycles at a current density of 100 mA g(-1) and a good rate capability of 183 mA h g(-1) at 3 A g(-1). The excellent electrochemical performance is owing to the synergistic effects of the amorphous structure of Fe2O3 and the 3D interconnected nitrogen-doped carbon network with high nitrogen doping content (10 atom%), which do not only relieve the internal stress of the electrode and accommodate more electrochemical active sites for Na+ storage, but also buffer the volume changes of amorphous Fe2O3 as well as facilitate the electronic and ionic transportation during cycling.