Tunable synthesis of Fe-Ge alloy confined in oxide matrix and its   application for energy storage

doi:10.1016/j.jpowsour.2017.05.104

CORC > 北京大学 > 化学与分子工程学院

	Tunable synthesis of Fe-Ge alloy confined in oxide matrix and its application for energy storage
	Wang, Xin ; Dong, Chenlong ; Lou, Minhe ; Dong, Wujie ; Yuan, Xiaotao ; Tang, Yufeng ; Huang, Fuqiang
刊名	JOURNAL OF POWER SOURCES
	2017
关键词	Arc-discharge method Tunable synthesis Core-shell structure Fe-Ge alloy Lithium ion battery Performance LITHIUM-ION BATTERIES ANODE MATERIALS NANOWIRES NANOPARTICLES CONVERSION
DOI	10.1016/j.jpowsour.2017.05.104
英文摘要	The Fe-Ge alloy nanoparticle and amorphous iron oxide shell (FeGe@Fe2O3) composite is synthesized by a facile arc-discharge method. The thickness of shell can be tuned regularly by the substitution of precursor. And then, the nanostructured core-shell FeGe@Fe2O3 is investigated as an anode material for lithium ion battery firstly. The FeGe@Fe2O3 harvests significantly enhanced reversible capacity of 10793 mA h g(-1) at 0.1 A g(-1) and 800 mA h g(-1) retention after 50 cycles, and the capacity performance is superior to Fe-Ge alloy nanoparticles (NPs). It also shows satisfactory rate capability of 467 mA h g(-1) at 2 A g(-1) and 232 mA h g(-1) at 5 A g(-1), respectively, which is much better than bare Fe-Ge NPs. These good lithium storage performances are attributed to the amorphous oxide shell and the Fe-Ge alloy. To this end, this facile and tunable method provides a reasonable idea of controlling core-shell structure material precisely and this type of material can be large-scale synthesized. (C) 2017 Elsevier B.V. All rights reserved.; National Key Research and Development Program [2016YFB0901600]; NSF of China [61376056, 51672301, 51672295]; Science and Technology Commission of Shanghai [14520722000, 16ZR1440500, 16JC1401700]; Shanghai Science and Technology Development Funds [16QA1404200]; Key Research Program of Chinese Academy of Sciences [KGZD-EW-T06]; Youth Innovation Promotion Association CAS; SCI(E); ARTICLE; 124-128; 360
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/471332]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, Xin,Dong, Chenlong,Lou, Minhe,et al. Tunable synthesis of Fe-Ge alloy confined in oxide matrix and its application for energy storage[J]. JOURNAL OF POWER SOURCES,2017.
APA	Wang, Xin.,Dong, Chenlong.,Lou, Minhe.,Dong, Wujie.,Yuan, Xiaotao.,...&Huang, Fuqiang.(2017).Tunable synthesis of Fe-Ge alloy confined in oxide matrix and its application for energy storage.JOURNAL OF POWER SOURCES.
MLA	Wang, Xin,et al."Tunable synthesis of Fe-Ge alloy confined in oxide matrix and its application for energy storage".JOURNAL OF POWER SOURCES (2017).