CAS OpenIR
Nanosized Si particles with rich surface organic functional groups as high-performance Li-battery anodes
Ren, Wenfeng1,5; Wang, Yanhong1,3; Tan, Qiangqiang1,3; Yu, Jing1; Etim, Ubong Jerom2; Zhong, Ziyi2,6; Su, Fabing1,3,4
2019-10-10
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume320Pages:9
AbstractNanostructured Si is a very promising anode material for lithium-ion batteries as Si possesses a theoretical specific capacity almost ten times higher than that of the conventional graphite anodes. However, difficulties associated with a low-cost and scalable production and unstable electrode/electrolyte interface of nanostructured Si limit their practical application. Herein, an improved route is developed for preparation of crystalline Si nanoparticles by directly reacting metallurgical-grade Si with ethanol catalyzed by Cu-based catalysts at 200 degrees C to generate alkoxysilane and Si nanostructures and the latter were ball-milled to obtain the desired Si nanoparticles. The particle size of the crystalline Si nanoparticles could be well tuned by adjusting the reaction time and the amount of ethanol. Furthermore, the surfaces of obtained Si nanoparticles were in situ modified by organic functional groups (R-CH2-OH, R -COOH, etc.), confirmed by FTIR and H-1 solid-state NMR, which reacted with lithium in the 1st lithiation to form a stable artificial solid electrolyte interphase layer. As tested, the pristine Si nanoparticles exhibited both high reversible capacity and good cycle life even close to that of the carbon-coated Si nanoparticles. Ultimately, this route is cost-effective for scalable manufacture of Si nanoparticles with in situ functionalized surface that can facilitate formation of stable solid electrolyte interphase layer. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordSilicon nanoparticles Artificial solid electrolyte interphase Organic functional groups Anode materials Lithium ion batteries
DOI10.1016/j.electacta.2019.134625
Language英语
WOS KeywordX-RAY PHOTOELECTRON ; SCALABLE SYNTHESIS ; FLUOROETHYLENE CARBONATE ; AMORPHOUS-SILICON ; HIGH-CAPACITY ; LITHIUM ; COMPOSITE ; NANOPARTICLES ; MICROSPHERES ; NANOSPHERES
Funding ProjectNational Natural Science Foundation of China[51772295]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000483341100082
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30721
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Yanhong; Zhong, Ziyi; Su, Fabing
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Guangdong Technion Israel Inst Technol, Coll Engn, Shantou 515063, Guangdong, Peoples R China
3.Zhongke Langfang Inst Proc Engn, Langfang Econ & Tech Dev Zone, Langfang 065001, Hebei, Peoples R China
4.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Liaoning, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Technion Israel Inst Technol IIT, Dept Chem Engn, IL-32000 Haifa, Israel
Recommended Citation
GB/T 7714
Ren, Wenfeng,Wang, Yanhong,Tan, Qiangqiang,et al. Nanosized Si particles with rich surface organic functional groups as high-performance Li-battery anodes[J]. ELECTROCHIMICA ACTA,2019,320:9.
APA Ren, Wenfeng.,Wang, Yanhong.,Tan, Qiangqiang.,Yu, Jing.,Etim, Ubong Jerom.,...&Su, Fabing.(2019).Nanosized Si particles with rich surface organic functional groups as high-performance Li-battery anodes.ELECTROCHIMICA ACTA,320,9.
MLA Ren, Wenfeng,et al."Nanosized Si particles with rich surface organic functional groups as high-performance Li-battery anodes".ELECTROCHIMICA ACTA 320(2019):9.
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