Graphene oxide nano-sheets wrapped Cu2O microspheres as improved performance anode materials for lithium ion batteries

	Graphene oxide nano-sheets wrapped Cu2O microspheres as improved performance anode materials for lithium ion batteries
	Xu YiTao; Guo Ying; Li Chang; Zhou XuanYu; Tucker Michael C.; Fu XianZhu; Sun Rong; Wong ChingPing
刊名	NANO ENERGY
	2015
英文摘要	Cu2O microspheres were successfully encapsulated by graphene oxide (GO) nano-sheets and used directly as the anode material for lithium ion batteries. The core-shell structured Cu2O@GO composite delivered a reversible capacity of 458 mA h g(-1) at a current density of 100 mA g(-1) after 50 cycles. Even at a high charge-discharge rate of 1000 mA g(-1), Cu2O@GO still demonstrated a reversible capacity of 240 mA h g(-1) after 200 cycles, significantly higher than those of the bare Cu2O microspheres (37 mA h g(-1)) and GO nano-sheets (11 mA h g(-1)). The rate capability evaluated by the ratio of capacity at 100 mA g(-1)/1000 mA g(-1) current density was 49%, 25% and 9.8% for Cu2O@GO, bare Cu2O and GO, respectively. The greatly enhanced performance for GO nano-sheets wrapped Cu2O microspheres composite mainly resulted from the synergistic effect of Cu2O microspheres and GO nano-sheets core-shell composite: the flexible in-situ electrochemically reduced GO nano-sheet coating layer functioning as an efficient three dimensional (3D) conductive network and lithium storage active material; the Cu2O microsphere core functioning as a skeleton to support multilayer GO sheets and avoid GO nano-sheets aggregation. (C) 2014 Elsevier Ltd. All rights reserved.
收录类别	SCI
原文出处	http://www.sciencedirect.com/science/article/pii/S2211285514200395
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/6637]
专题	深圳先进技术研究院_集成所
作者单位	NANO ENERGY
推荐引用方式 GB/T 7714	Xu YiTao,Guo Ying,Li Chang,et al. Graphene oxide nano-sheets wrapped Cu2O microspheres as improved performance anode materials for lithium ion batteries[J]. NANO ENERGY,2015.
APA	Xu YiTao.,Guo Ying.,Li Chang.,Zhou XuanYu.,Tucker Michael C..,...&Wong ChingPing.(2015).Graphene oxide nano-sheets wrapped Cu2O microspheres as improved performance anode materials for lithium ion batteries.NANO ENERGY.
MLA	Xu YiTao,et al."Graphene oxide nano-sheets wrapped Cu2O microspheres as improved performance anode materials for lithium ion batteries".NANO ENERGY (2015).