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A new design for Si wears double jackets used as a high-performance lithium-ion battery anode
Wu, Jinlong1,2,3; Liu, Junhao1,2; Wang, Zhi1,2; Gong, Xuzhong1,2; Wang, Yong3
2019-08-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume370Pages:565-572
Abstract

Since most active nanoparticles (Si, Sn, TiO2, SnO2, etc.) are simply decorated on the graphene surface instead of being contained between the graphene nanoarray, they are easily peeled off during the long-term cycling. A new Si-based double jackets nanostructure synthesized by synergistic coupling of TiO2@RGO coating layer, supporting large current density for charge/discharge, is reported as an anode material for lithium-ion batteries. The new heterostructure modifies the surface of Si and TiO2 to ensure a firm bond between the interfaces, layer by layer self-assembly dispersed in the reduced graphene oxide (Si@TiO2@RGO). Compared with the regular Si@G composites, Si@TiO2@RGO exhibits excellent electrochemical performance, mainly due to the strong interfacial binding force among the three, thus the integrity of the electrode structure is ensured in the lithiation/delithiation process. As a consequence, the Si@TiO2@RGO electrode exhibits a stable reversible specific capacity of 1679.1 mAh g(-1) at a large current density of 1.4 A g(-1) after 900 cycles.

KeywordSilicon Interfacial Binding Force Lithium-ion Battery Long Cycling Fast Charge/discharge
DOI10.1016/j.cej.2019.03.253
Language英语
WOS KeywordReduced Graphene Oxide ; Silicon ; Storage ; Spectroscopy ; Challenges ; Foam
Funding ProjectNational Natural Science Foundation of China[51704271] ; National Natural Science Foundation of China[21878299] ; National Natural Science Foundation of China[U1702251]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000467387200052
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28128
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Junhao; Wang, Zhi
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
Recommended Citation
GB/T 7714
Wu, Jinlong,Liu, Junhao,Wang, Zhi,et al. A new design for Si wears double jackets used as a high-performance lithium-ion battery anode[J]. CHEMICAL ENGINEERING JOURNAL,2019,370:565-572.
APA Wu, Jinlong,Liu, Junhao,Wang, Zhi,Gong, Xuzhong,&Wang, Yong.(2019).A new design for Si wears double jackets used as a high-performance lithium-ion battery anode.CHEMICAL ENGINEERING JOURNAL,370,565-572.
MLA Wu, Jinlong,et al."A new design for Si wears double jackets used as a high-performance lithium-ion battery anode".CHEMICAL ENGINEERING JOURNAL 370(2019):565-572.
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