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Chemistry Design Towards a Stable Sulfide-Based Superionic Conductor Li4Cu8Ge3S12
Wang, Yingqi; Lu, Xujie; Zheng, Chong; Liu, Xiang; Chen, Zonghai; Yang, Wenge; Lin, Jianlula; Huang, Fuqiang
2019-06-03
Source PublicationANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN1433-7851
Volume58Issue:23Pages:7673
SubtypeArticle
AbstractSulfide-based superionic conductors with high ionic conductivity have been explored as candidates for solid-state Li batteries. However, moisture hypersensitivity has made their manufacture complicated and costly and also impeded applications in batteries. Now, a sulfide-based superionic conductor Li4Cu8Ge3S12 with superior stability was developed based on the hard/soft acid-base theory. The compound is stable in both moist air and aqueous LiOH aqueous solution. The electrochemical stability window was up to 1.5V. An ionic conductivity of 0.9x10(-4)Scm with low activation energy of 0.33eV was achieved without any optimization. The material features a rigid Cu-Ge-S open framework that increases its stability. Meanwhile, the weak bonding between Li+ and the framework promotes ionic conductivity. This work provides a structural configuration in which weak Li bonding in the rigid framework promotes an environment for highly conductive and stable solid-state electrolytes.
Keywordchalcogenide open frameworks crystal engineering enhanced stability solid electrolytes superionic conductors
DOI10.1002/anie.201901739
Language英语
WOS Research AreaChemistry
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27063
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Wang, Yingqi,Lu, Xujie,Zheng, Chong,et al. Chemistry Design Towards a Stable Sulfide-Based Superionic Conductor Li4Cu8Ge3S12[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2019,58(23):7673.
APA Wang, Yingqi.,Lu, Xujie.,Zheng, Chong.,Liu, Xiang.,Chen, Zonghai.,...&Huang, Fuqiang.(2019).Chemistry Design Towards a Stable Sulfide-Based Superionic Conductor Li4Cu8Ge3S12.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,58(23),7673.
MLA Wang, Yingqi,et al."Chemistry Design Towards a Stable Sulfide-Based Superionic Conductor Li4Cu8Ge3S12".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 58.23(2019):7673.
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