2D holey cobalt sulfide nanosheets derived from metal-organic frameworks for high-rate sodium ion batteries with superior cyclability

doi:10.1039/c8ta05612a

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	2D holey cobalt sulfide nanosheets derived from metal-organic frameworks for high-rate sodium ion batteries with superior cyclability
	Dong, YF ; Shi, W 1; Lu, PF ; Qin, JQ ; Zheng, SH ; Zhang, BS ; Bao, XH ; Wu, ZS
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2018-08-07
卷号	6 期号:29 页码:14324-14329
ISSN号	2050-7488
DOI	10.1039/c8ta05612a
英文摘要	Sodium ion batteries (SIBs) for large-scale grid applications are facing great challenges in terms of development of high-performance electrode materials and screening of suitable electrolytes. Herein, a versatile and scalable protocol for synthesizing two-dimensional (2D) holey cobalt sulfide (h-Co4S3) nanosheets is demonstrated for high-rate and long-life SIBs in an ether-based electrolyte of 1.0 M NaCF3SO3 in diglyme. The 2D h-Co4S3 nanosheets are prepared by sulfuration of leaf-like cobalt based metal-organic frameworks (CoMOFs), and subsequent annealing treatment. Benefiting from the nanosheet nature of in-plane nanopores (10-30 nm), ultra-thinness (< 30 nm), crumpled morphology, and micron-scale lateral size that can provide more active sites and enhanced sodiation/desodiation kinetics, the resulting h-Co4S3 nanosheets achieve a high reversible capacity of 571 mA h g(-1) at 0.1 A g(-1), and long-life cycling stability with a retention of 80% after 400 cycles for SIBs. Furthermore, theoretical simulation reveals the enhanced structural stability of h-Co4S3 nanosheets with a lower binding energy (0.31 eV) of the Co-O bond in the ether-based electrolyte than that in the carbonate-based electrolyte. Notably, the h-Co4S3 anode offers an exceptional rate capacity of 257 mA h g(-1) at 12 A g(-1), outperforming most reported cobalt sulfide-based anodes. This strategy will pave a new way to rationally construct MOF-derived 2D nanostructures for various energy-related applications.
学科主题	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
语种	英语
WOS记录号	WOS:000443116700035
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80032]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Dong, YF,Shi, W,Lu, PF,et al. 2D holey cobalt sulfide nanosheets derived from metal-organic frameworks for high-rate sodium ion batteries with superior cyclability[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(29):14324-14329.
APA	Dong, YF.,Shi, W.,Lu, PF.,Qin, JQ.,Zheng, SH.,...&Wu, ZS.(2018).2D holey cobalt sulfide nanosheets derived from metal-organic frameworks for high-rate sodium ion batteries with superior cyclability.JOURNAL OF MATERIALS CHEMISTRY A,6(29),14324-14329.
MLA	Dong, YF,et al."2D holey cobalt sulfide nanosheets derived from metal-organic frameworks for high-rate sodium ion batteries with superior cyclability".JOURNAL OF MATERIALS CHEMISTRY A 6.29(2018):14324-14329.