Sustainable Interfaces between Si Anodes and Garnet Electrolytes for Room-Temperature Solid-State Batteries

doi:10.1021/acsami.7b16385

	Sustainable Interfaces between Si Anodes and Garnet Electrolytes for Room-Temperature Solid-State Batteries
	Chen, Cheng 1; Li, Quan 1,2; Li, Yiqiu ; Cui, Zhonghui ; Guo, Xiangxin ; Li, Hong 2
刊名	ACS APPLIED MATERIALS & INTERFACES
	2018
卷号	10 期号:2 页码:2185
关键词	Si anodes garnet electrolytes Si and garnet interfaces solid-state batteries in situ SEM
ISSN号	1944-8244
DOI	10.1021/acsami.7b16385
英文摘要	Solid-state batteries (SSBs) have seen a resurgence of research interests in recent years for their potential to offer high energy density and excellent safety far beyond current commercialized lithium-ion batteries. The compatibility of Si anodes and Ta-doped Li7La3Zr2O12 (Li6.4La3Zr1.4Ta0.6O12, LLZTO) solid electrolytes and the stability of the Si anode have been investigated. It is found that Si layer anodes thinner than 180 nm can maintain good contact with the LLZTO plate electrolytes, leading the Li/LLZTO/Si cells to exhibit excellent cycling performance with a capacity retention over 85% after 100 cycles. As the Si layer thickness is increased to larger than 300 nm, the capacity retention of Li/LLZTO/Si cells becomes 77% after 100 cycles. When the thickness is close to 900 nm, the cells can cycle only for a limited number of times because of the destructive volume change at the interfaces. Because of the sustainable Si/LLZTO interfaces with the Si layer anodes with a thickness of 180 nm, full cells with the LiFePO4 cathodes show discharge capacities of 120 mA h g(-1) for LiFePO4 and 2200 mA h g(-1) for the Si anodes at room temperature. They cycle 100 times with a capacity retention of 72%. These results indicate that the combination between the Si anodes and the garnet electrolytes is a promising strategy for constructing high-performance SSBs.
学科主题	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000423140400081
资助机构	The authors would like to thank the financial supports from National Natural Science Foundation of China (grant nos. 51532002, 51771222, 51772314, and 51702346), National Basic Research Program of China (2014CB921004), and Natural Science Foundation of Shanghai (17ZR1434600). ; The authors would like to thank the financial supports from National Natural Science Foundation of China (grant nos. 51532002, 51771222, 51772314, and 51702346), National Basic Research Program of China (2014CB921004), and Natural Science Foundation of Shanghai (17ZR1434600).
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24548]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 3.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chen, Cheng,Li, Quan,Li, Yiqiu,et al. Sustainable Interfaces between Si Anodes and Garnet Electrolytes for Room-Temperature Solid-State Batteries[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(2):2185, 2190.
APA	Chen, Cheng,Li, Quan,Li, Yiqiu,Cui, Zhonghui,Guo, Xiangxin,&Li, Hong.(2018).Sustainable Interfaces between Si Anodes and Garnet Electrolytes for Room-Temperature Solid-State Batteries.ACS APPLIED MATERIALS & INTERFACES,10(2),2185.
MLA	Chen, Cheng,et al."Sustainable Interfaces between Si Anodes and Garnet Electrolytes for Room-Temperature Solid-State Batteries".ACS APPLIED MATERIALS & INTERFACES 10.2(2018):2185.