High-yield synthesis of ultrathin silicon nanosheets by physical grinding enables robust lithium-ion storage

doi:10.1016/j.cej.2022.137022

CAS OpenIR

	High-yield synthesis of ultrathin silicon nanosheets by physical grinding enables robust lithium-ion storage
	Lu, Jijun 1,2,3; Zhang, Yaoyao 1,2; Gong, Xuzhong 1,2; Li, Leyang 1,2; Pang, Sheng 1,2,3; Qian, Guoyu 1,2; Wang, Zhi 1,2,3; Liu, Junhao 1,2,3
	2022-10-15
Source Publication	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
Volume	446 Pages:9
Abstract	Ultra-thin two-dimensional (2D) silicon nanosheets (SiNSs) have potential applications in electronic, energy storage, and energy conversion devices owing to their unique properties. However, high-yield and large-scale manufacturing of high-quality ultra-thin 2D SiNSs remains a great challenge. This report describes a simple, high-yield (> 98%), and large-scale method for preparing ultra-thin 2D SiNSs. The developed approach improves the yield of SiNSs (thickness < 5 nm) by controlling the interaction force between the Si ingot and the abrasive grains during the diamond wire grinding process. The ultra-thin SiNSs deliver enhanced tap density and a limited variable solid electrolyte interphase growth interface. A dynamic chemical vapor deposition technique is carried out to increase the uniformity of the carbon coating on the ultra-thin SiNSs. Lithium-ion batteries employing SiNS-carbon composite anodes exhibit ultra-high initial Coulombic efficiency (88.1%) at a high Si content (79%). The full battery constructed with the fabricated SiNS-carbon composite anode and a commercial LiFePO4 cathode exhibits strong stability (1C over 600 cycles with a capacity retention rate > 80%). The results presented herein confirm the significant potential applicability of the developed method for synthesizing ultra-thin SiNSs with carbon coatings.
Keyword	Ultra-thin Si nanosheet Diamond wire grinding Dynamic carbon coating Solid electrolyte interphase growth interface Lithium-ion battery
DOI	10.1016/j.cej.2022.137022
Language	英语
WOS Keyword	FLUIDIZED-BED ; ANODE ; COMPOSITE
Funding Project	National Key R&D Program of China[2018YFC1901801] ; National Natural Science Foundation of China[52074255] ; National Natural Science Foundation of China[51934006]
WOS Research Area	Engineering
WOS Subject	Engineering, Environmental ; Engineering, Chemical
Funding Organization	National Key R&D Program of China ; National Natural Science Foundation of China
WOS ID	WOS:000806756200001
Publisher	ELSEVIER SCIENCE SA
Citation statistics
Document Type	期刊论文
Identifier	http://ir.ipe.ac.cn/handle/122111/53804
Collection	中国科学院过程工程研究所
Corresponding Author	Wang, Zhi; Liu, Junhao
Affiliation	1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Strateg Met reso, 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,Zhang, Yaoyao,Gong, Xuzhong,et al. High-yield synthesis of ultrathin silicon nanosheets by physical grinding enables robust lithium-ion storage[J]. CHEMICAL ENGINEERING JOURNAL,2022,446:9.
APA	Lu, Jijun.,Zhang, Yaoyao.,Gong, Xuzhong.,Li, Leyang.,Pang, Sheng.,...&Liu, Junhao.(2022).High-yield synthesis of ultrathin silicon nanosheets by physical grinding enables robust lithium-ion storage.CHEMICAL ENGINEERING JOURNAL,446,9.
MLA	Lu, Jijun,et al."High-yield synthesis of ultrathin silicon nanosheets by physical grinding enables robust lithium-ion storage".CHEMICAL ENGINEERING JOURNAL 446(2022):9.

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