A Nanosheet Array of Cu2Se Intercalation Compound with Expanded Interlayer Space for Sodium Ion Storage

doi:10.1002/aenm.202000666

IMR OpenIR

	A Nanosheet Array of Cu2Se Intercalation Compound with Expanded Interlayer Space for Sodium Ion Storage
	Xiao, Yuanhua; Zhao, Xiaobing; Wang, Xuezhao; Su, Dangcheng; Bai, Shuo; Chen, Wei; Fang, Shaoming; Zhou, Liming; Cheng, Hui-Ming; Li, Feng
	2020-07-01
Source Publication	ADVANCED ENERGY MATERIALS
Volume	10 Issue:25
Abstract	Intercalation chemistry/engineering has been widely investigated in the development of electrochemical energy storage. Graphite, as an old intercalation host, is receiving vigorous attention again via a new halogen intercalation. Whereas, exploiting new intercalation hosts and optimizing the intercalation effect still remains a great challenge. This study fabricates a Cu2Se intercalation compound showing expanded interlayer space and nanosheet array features by using a green growth approach, in which cetyltrimethyl ammonium bromide (CTAB) is inserted into Cu2Se at an ambient temperature. When acting as an electrode material for sodium-ion batteries, the Cu2Se-CTAB nanosheet arrays exhibit excellent discharge capacity and rate capability (426.0 mAh g(-1) at 0.1 A g(-1) and 238.1 mAh g(-1) at 30 A g(-1)), as well as high capacity retention of approximate to 90% at 20 A g(-1) after 6500 cycles. Benefiting from the porous array architecture, the transport of electrolytes is facilitated on the surface of Cu2Se nanosheets. In particular, the CTAB intercalated in the interlayer space of Cu2Se can increase its buffer space, stabilize the polyselenide shuttle, and prevent the fast growth of Cu nanoparticles during its electrochemical process.
DOI	10.1002/aenm.202000666
WOS ID	WOS:000529646100001
Citation statistics	Cited Times:11[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/82923
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Xiao, Yuanhua,Zhao, Xiaobing,Wang, Xuezhao,et al. A Nanosheet Array of Cu2Se Intercalation Compound with Expanded Interlayer Space for Sodium Ion Storage[J]. ADVANCED ENERGY MATERIALS,2020,10(25).
APA	Xiao, Yuanhua.,Zhao, Xiaobing.,Wang, Xuezhao.,Su, Dangcheng.,Bai, Shuo.,...&Li, Feng.(2020).A Nanosheet Array of Cu2Se Intercalation Compound with Expanded Interlayer Space for Sodium Ion Storage.ADVANCED ENERGY MATERIALS,10(25).
MLA	Xiao, Yuanhua,et al."A Nanosheet Array of Cu2Se Intercalation Compound with Expanded Interlayer Space for Sodium Ion Storage".ADVANCED ENERGY MATERIALS 10.25(2020).

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