Microwave synthesis of Fe-doped anatase TiO2/N-doped modified graphene composites with superior sodium storage properties

被引：6

作者：

Wang, Shuaihao ^{[1
]}

Zhu, Yuanyi ^{[1
,2
]}

Sun, Xuejiao ^{[1
]}

An, Shengli ^{[1
]}

Cui, Jinlong ^{[1
]}

Zhang, Yongqiang ^{[1
]}

He, Wenxiu ^{[1
]}

机构：

[1] Inner Mongolia Univ Sci & Technol, Sch Chem & Chem Engn, Baotou 014010, Peoples R China

[2] Guangxi Guanfan Investment Co Ltd, Guigang 537100, Peoples R China

来源：

基金：

中国国家自然科学基金;

关键词：

Na-ion batteries; N-doped modified graphene; Fe-doped anatase TiO2; Anodes; TIO2; NANOPARTICLES; ANODE MATERIALS; LITHIUM-ION; PHOTOCATALYTIC ACTIVITY; SOL-GEL; NANOSHEETS; NANOTUBES; HYBRID; NANOFIBERS; STABILITY;

D O I：

10.1016/j.diamond.2021.108442

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Exploring advanced anodes for Na-ion batteries (NIBs) remains challenging. This paper reports a simple solgel-microwave two-step route to synthesize Fe-doped anatase TiO2/N-doped modified graphene (FTiO2/NRGO) composites with superior performance in NIBs. The doping of low-valence Fe3+ can generate vacancies in the oxygen sub-lattice of anatase TiO2, thereby improving electronic conductivity. Furthermore, the introduction of N-doped graphene (NRGO) can further enhance the structural stability of the composites and facilitate the ions/Na+ diffusion. With this strategy, the FTiO2/NRGO electrode delivers outstanding reversible capacities (161.3 mAh g(-1) at 0.1 A g(-1) over 300 cycles) and superior rate performance for NIBs (102.1 mAh g(-1) at 2 A g(-1)).

引用

页数：8

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