Enhanced lithium storage performance of porous Si/C composite anodes using a recrystallized NaCl template

doi:10.1039/d0dt03911j

	Enhanced lithium storage performance of porous Si/C composite anodes using a recrystallized NaCl template
	Hong, Ye 1; Dong, Haiyong 7; Li, Jianhong 7; Hu, Qianqian 3,4,5,6,7; Tang, Zilong 2; Ouyang, Jian 1; Wang, Xiaojun 1; Xiang, Dan 1
刊名	DALTON TRANSACTIONS
	2021-02-28
卷号	50 期号:8 页码:2815-2823
ISSN号	1477-9226
DOI	10.1039/d0dt03911j
通讯作者	Xiang, Dan(gpnuxd@163.com)
英文摘要	Silicon (Si) has recently aroused great interest as a promising anode material for lithium-ion batteries with high energy density due to its high theoretical capacity. However, the application of Si remains a great challenge owing to its extremely large volume change during cycling, thus resulting in dramatic capacity fading. Herein, a novel structure design of the porous Si/C composite with Si nanoparticles embedded in the carbon nanosheets has been successfully achieved by using a recrystallized NaCl template with appropriate particle size. The outermost sheet-like carbon coating can improve the electronic conductivity and contribute to the formation of a more stable solid-electrolyte interphase layer, while the inner void space effectively buffers the volume expansion of Si during the lithiation process. In addition, only a structure with Si particles anchored on the surface of carbon nanosheets has been obtained by using a commercial NaCl template with large particle size, confirming the effective regulation of the NaCl template in the microstructure and thus the electrochemical properties of the Si/C composites. As expected, benefiting from the combination of the outermost carbon coating and recrystallized NaCl-derived porous structure, the as-obtained Si/C composite demonstrates attractive cycling stability and rate performance as an anode material for lithium-ion batteries.
资助项目	Guangdong Science and Technology Project[2016B090927009] ; Guangdong Science and Technology Project[2016B090927002] ; Special Projects in Universities' Key Fields of Guangdong Province[2020ZDZX2002] ; Guangzhou Science and Technology Project[201805010001] ; State Key Laboratory of New Ceramic and Fine Processing Tsinghua University[KF202009]
WOS关键词	SILICON NANOPARTICLES ; CARBON NANOSHEETS ; FACILE SYNTHESIS ; ION ; GRAPHENE ; PARTICLES
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000624242900014
资助机构	Guangdong Science and Technology Project ; Special Projects in Universities' Key Fields of Guangdong Province ; Guangzhou Science and Technology Project ; State Key Laboratory of New Ceramic and Fine Processing Tsinghua University
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/32829]
专题	中国科学院广州能源研究所
通讯作者	Xiang, Dan
作者单位	1.Guangdong Polytech Normal Univ, Ind Training Ctr, Guangzhou 510665, Peoples R China 2.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 5.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 7.GAC Automot Res & Dev Ctr, Guangzhou 511434, Peoples R China
推荐引用方式 GB/T 7714	Hong, Ye,Dong, Haiyong,Li, Jianhong,et al. Enhanced lithium storage performance of porous Si/C composite anodes using a recrystallized NaCl template[J]. DALTON TRANSACTIONS,2021,50(8):2815-2823.
APA	Hong, Ye.,Dong, Haiyong.,Li, Jianhong.,Hu, Qianqian.,Tang, Zilong.,...&Xiang, Dan.(2021).Enhanced lithium storage performance of porous Si/C composite anodes using a recrystallized NaCl template.DALTON TRANSACTIONS,50(8),2815-2823.
MLA	Hong, Ye,et al."Enhanced lithium storage performance of porous Si/C composite anodes using a recrystallized NaCl template".DALTON TRANSACTIONS 50.8(2021):2815-2823.