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

doi:10.1021/acsami.9b03230

	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
刊名	ACS APPLIED MATERIALS & INTERFACES
	2019-06-05
卷号	11 期号:22 页码:19977
关键词	molybdenum carbide lithium-ion battery anode materials nanodots capacitive
ISSN号	1944-8244
DOI	10.1021/acsami.9b03230
文献子类	Article
英文摘要	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.
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27061]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 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.