In Situ Synthesis of MoC1-x Nanodot@Carbon Hybrids for Capacitive Lithium-Ion Storage

doi:10.1021/acsami.9b03230

SIC OpenIR

	In Situ Synthesis of MoC1-x Nanodot@Carbon Hybrids for Capacitive Lithium-Ion Storage
	Lin, Jie; Xu, Jijian; Zhao, Wei; Dong, Wujie; Li, Ruizhe; Zhang, Zhichao; Huang, Fuqiang
	2019-06-05
Source Publication	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
Volume	11 Issue:22 Pages:19977
Subtype	Article
Abstract	In this study, in situ synthesis of carbon-coated MoC1-x nanodots anchored on nitrogen-doped carbon (MoC1-x@C) for lithium storage is reported. The obtained MoCi-x@C hybrids exhibit intriguing structural characteristics including ultrafine particle size (ca. 1.2 nm) of MoC1-x nanodots, porous structure of nitrogen doped carbon matrix, and good robustness. When evaluated as anodes for lithium-ion batteries, the optimized MoC1-x@C sample demonstrates a superior specific capacity (1099.2 mA h g(-1) at 0.1 A g(-1)) and good rate capability (369.1 mA h g(-1) at 5 A g(-1)). The MoC1-x@C anode also presents remarkable cycling stability with a much higher specific capacity (657.9 mA h g(-1)) than that of commercial bulk MoC (91.4 mA h g(-1)) after 500 cycles at 1 A g(-1). Kinetics analysis of the anodes reveals the charge storage mechanism, which demonstrates the existence of capacitive redox reactions occurring at the shallow surface of the MoC1-x nanodots and closely relating to the particle size. The outstanding electrochemical performance results from the synergistic effect of the elastic carbonaceous encapsulation to accommodate the huge volume expansion and the ultrafine MoC1-x nanodots to provide more reactive sites for capacitive lithium storage.
Keyword	molybdenum carbide lithium-ion battery anode materials nanodots capacitive
DOI	10.1021/acsami.9b03230
Language	英语
WOS Research Area	Science & Technology - Other Topics ; Materials Science
Publisher	AMER CHEMICAL SOC
Citation statistics	Cited Times:6[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/27061
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Lin, Jie,Xu, Jijian,Zhao, Wei,et al. In Situ Synthesis of MoC1-x Nanodot@Carbon Hybrids for Capacitive Lithium-Ion Storage[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(22):19977.
APA	Lin, Jie.,Xu, Jijian.,Zhao, Wei.,Dong, Wujie.,Li, Ruizhe.,...&Huang, Fuqiang.(2019).In Situ Synthesis of MoC1-x Nanodot@Carbon Hybrids for Capacitive Lithium-Ion Storage.ACS APPLIED MATERIALS & INTERFACES,11(22),19977.
MLA	Lin, Jie,et al."In Situ Synthesis of MoC1-x Nanodot@Carbon Hybrids for Capacitive Lithium-Ion Storage".ACS APPLIED MATERIALS & INTERFACES 11.22(2019):19977.

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