Ultrathin Fe2O3 nanoflakes using smart chemical stripping for high   performance lithium storage

doi:10.1039/c7ta05798a

CORC > 北京大学 > 工学院

	Ultrathin Fe2O3 nanoflakes using smart chemical stripping for high performance lithium storage
	Wang, Yazhou ; Han, Jisheng ; Gu, Xingxing ; Dimitrijev, Sima ; Hou, Yanglong ; Zhang, Shanqing
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2017
关键词	LI-ION BATTERIES REDUCED GRAPHENE OXIDE ANODE MATERIAL ALPHA-FE2O3 COMPOSITE NANOCRYSTALS DISSOLUTION NANODISCS MECHANISM CAPACITY
DOI	10.1039/c7ta05798a
英文摘要	Two-dimensional (2D) nanomaterials are extraordinarily attractive for use in energy storage devices because of their unique electronic and mechanical properties. However, the synthesis of ultrathin 2D nanomaterials is still a great challenge. In this paper, a top-down strategy using a high-pressure hydrogen surface treatment and controlled etching to reduce the thickness of iron(III) oxide (Fe2O3) nanoplates is proposed. As a result, the ultrathin Fe2O3 hexagonal nanoflakes with a thickness of approximately 4 nm are successfully synthesized. When employed as an anode material in rechargeable lithium-ion batteries, it delivers a super-high reversible capacity of approximately 1043 mA h g(-1) after 100 cycles at a current density of 0.1 A g(-1) and approximately 578 mA h g(-1) after 500 cycles at a current density of 5.0 A g(-1). It is also the best performing Fe2O3 electrode among the reported Fe2O3 anodes in the literature. Such excellent cycling performances can be attributed to the ultrathin structure which is able to enhance the mass transport of the lithium ion, short electron transport length as well as tolerance of large volume changes. This work provides a guidance to the synthesis of ultra-thin 2D oxide nanomaterials for energy storage.; Australian Research Council Discovery Project; National Natural Science Foundation of China [51590882, 51125001]; State Key Project of Research and Development of China [2016YFA0200102]; SCI(E); ARTICLE; 35; 18737-18743; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/470779]
专题	工学院
推荐引用方式 GB/T 7714	Wang, Yazhou,Han, Jisheng,Gu, Xingxing,et al. Ultrathin Fe2O3 nanoflakes using smart chemical stripping for high performance lithium storage[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017.
APA	Wang, Yazhou,Han, Jisheng,Gu, Xingxing,Dimitrijev, Sima,Hou, Yanglong,&Zhang, Shanqing.(2017).Ultrathin Fe2O3 nanoflakes using smart chemical stripping for high performance lithium storage.JOURNAL OF MATERIALS CHEMISTRY A.
MLA	Wang, Yazhou,et al."Ultrathin Fe2O3 nanoflakes using smart chemical stripping for high performance lithium storage".JOURNAL OF MATERIALS CHEMISTRY A (2017).