CAS OpenIR
Fe3C doped modified nano-Si/C composites as high-coulombic-efficiency anodes for lithium-ion batteries
Lu, Jijun1,2,3; Liu, Junhao1,2,3; Gong, Xuzhong1,2,3; Wang, Zhi1,2,3
2021-10-20
Source PublicationSUSTAINABLE ENERGY & FUELS
ISSN2398-4902
Pages11
AbstractSilicon is considered to be the most promising candidate for the anode of high energy density lithium-ion batteries. Nanometerization has been proven to be an effective method for improving the stress accumulation caused by the volume expansion of silicon. However, new issues such as poor initial coulombic efficiency (ICE) need to be solved because nanostructure silicon has an increased specific surface area. Here, a doping modification strategy is developed by a solvothermal combined with low-pressure gas-solid conversion reaction, and innovatively formed an Fe3C/N co-doped carbon coating on the nano-silicon surface. The doping of Fe3C in the composite material can catalyze the formation of a thin and stable solid electrolyte interphase (SEI) on the electrode surface and serve as a framework to stabilize the electrode structure during charge and discharge. As a result, Fe3C doping can significantly increase the ICE of the electrode from 66.4% to 87.1%, and the stable efficiency exhibited a rapid increase upwards of 99.5% after only 6 cycles including the first formation cycle, compared to the non-doped structure. The modified nano-silicon with Fe3C doping can provide high reversible capacity (1443.3 mA h g(-1) after 200 cycles at 0.2 A g(-1)) and long cycle life (74% capacity retention after 1000 cycles at 0.5 A g(-1)).
DOI10.1039/d1se01400e
Language英语
WOS KeywordSOLID-ELECTROLYTE-INTERPHASE ; HIGH-ENERGY ; SILICON ANODES ; FLUOROETHYLENE CARBONATE ; PERFORMANCE ; NANOPARTICLES ; CAPACITY ; FACILE
Funding ProjectNational Key R&D Program of China[2018YFC1901801] ; National Natural Science Foundation of China[52074255] ; National Natural Science Foundation of China[51704271] ; National Natural Science Foundation of China[U1702251]
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China
WOS IDWOS:000716041100001
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50823
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Junhao; Wang, Zhi
Affiliation1.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Lu, Jijun,Liu, Junhao,Gong, Xuzhong,et al. Fe3C doped modified nano-Si/C composites as high-coulombic-efficiency anodes for lithium-ion batteries[J]. SUSTAINABLE ENERGY & FUELS,2021:11.
APA Lu, Jijun,Liu, Junhao,Gong, Xuzhong,&Wang, Zhi.(2021).Fe3C doped modified nano-Si/C composites as high-coulombic-efficiency anodes for lithium-ion batteries.SUSTAINABLE ENERGY & FUELS,11.
MLA Lu, Jijun,et al."Fe3C doped modified nano-Si/C composites as high-coulombic-efficiency anodes for lithium-ion batteries".SUSTAINABLE ENERGY & FUELS (2021):11.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Lu, Jijun]'s Articles
[Liu, Junhao]'s Articles
[Gong, Xuzhong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Lu, Jijun]'s Articles
[Liu, Junhao]'s Articles
[Gong, Xuzhong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Lu, Jijun]'s Articles
[Liu, Junhao]'s Articles
[Gong, Xuzhong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.