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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 PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume11Issue:22Pages:19977
SubtypeArticle
AbstractIn 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.
Keywordmolybdenum carbide lithium-ion battery anode materials nanodots capacitive
DOI10.1021/acsami.9b03230
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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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