CAS OpenIR
Influence of carbon coating on the electrochemical performance of SiO@C/graphite composite anode materials
Lu, Hao1,2; Wang, Junyang1,2; Liu, Bonan3; Chu, Geng4; Zhou, Ge1,2; Luo, Fei5; Zheng, Jieyun1,2; Yu, Xiqian1,2; Li, Hong1,2
2019-06-01
Source PublicationCHINESE PHYSICS B
ISSN1674-1056
Volume28Issue:6Pages:8
AbstractSilicon monoxide (SiO) has been considered as one of the most promising anode materials for next generation highenergy-density Li-ion batteries (LiBs) thanks to its high theoretical capacity. However, the poor intrinsic electronic conductivity and large volume change during lithium intercalation/de-intercalation restrict its practical applications. Fabrication of SiO/C composites is an effective way to overcome these problems. Herein, a series of micro-sized SiO@C/graphite (SiO@C/G) composite anode materials, with designed capacity of 600 mAh.g(-1), are successfully prepared through a pitch pyrolysis reaction method. The electrochemical performance of SiO@ C/G composite anodes with different carbon coating contents of 5 wt%, 10 wt%, 15 wt%, and 35 wt% is investigated. The results show that the SiO@C/G composite with 15-wt% carbon coating content exhibits the best cycle performance, with a high capacity retention of 90.7% at 25 degrees C and 90.1% at 45 degrees C after 100 cycles in full cells with LiNi0.5Co0.2Mn0.3O2 as cathodes. The scanning electron microscope (SEM) and electrochemistry impedance spectroscopy (EIS) results suggest that a moderate carbon coating layer can promote the formation of stable SEI film, which is favorable for maintaining good interfacial conductivity and thus enhancing the cycling stability of SiO electrode.
Keywordlithium-ion battery silicon monoxide carbon coating anode material
DOI10.1088/1674-1056/28/6/068201
Language英语
WOS KeywordLITHIUM-ION BATTERIES ; SILICON
Funding ProjectState Grid Technology Project, China[DG71-17-010] ; National Key Research and Development Program of China[2017YFB0102004] ; National Natural Science Foundation of China[51822211]
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding OrganizationState Grid Technology Project, China ; National Key Research and Development Program of China ; National Natural Science Foundation of China
WOS IDWOS:000471658000001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30017
Collection中国科学院过程工程研究所
Corresponding AuthorYu, Xiqian; Li, Hong
Affiliation1.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci CAS, Sch Phys Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Chem, CAS Res Grp High Energy Dens Lithium Batteries EV, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
5.Tianmulake Excellent Anode Mat Co Ltd, Changzhou 213300, Peoples R China
Recommended Citation
GB/T 7714
Lu, Hao,Wang, Junyang,Liu, Bonan,et al. Influence of carbon coating on the electrochemical performance of SiO@C/graphite composite anode materials[J]. CHINESE PHYSICS B,2019,28(6):8.
APA Lu, Hao.,Wang, Junyang.,Liu, Bonan.,Chu, Geng.,Zhou, Ge.,...&Li, Hong.(2019).Influence of carbon coating on the electrochemical performance of SiO@C/graphite composite anode materials.CHINESE PHYSICS B,28(6),8.
MLA Lu, Hao,et al."Influence of carbon coating on the electrochemical performance of SiO@C/graphite composite anode materials".CHINESE PHYSICS B 28.6(2019):8.
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