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Pyrochlore phase Ce(2)Sn(2)O(7)via an atom-confining strategy for reversible lithium storage
Xu, JJ; Wang, D; Kong, SY; Li, RZ; Hong, ZL; Huang, FQ
2020-03-21
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Issue11Pages:5744
SubtypeArticle
AbstractIn the search of high-performance anode materials for next-generation Li-ion batteries, more efforts are needed on new structural prototypes. Motivated by the negative thermal expansion effect in a loosely packed crystal structure type, we are intrigued by the possibility of exploiting new anode materials in a suitable phase structure with much-reduced intrinsic volume strain. Herein, we report a new pyrochlore phase anode material, Ce2Sn2O7, which shows atomic Sn confined in a conductive 3D percolating Ce-O framework. Based on the concept of structural openness, pyrochlore Ce2Sn2O7 possesses open structures to tolerate the volume change. Notably, the Ce-O network is quite robust against the charge/discharge process, which accounts for the high structural stability observed in the experiment. Ultimately, Ce2Sn2O7 electrodes achieve a capacity as high as 631.1 mA h g(-1) and excellent cycling stability. This atom-confining strategy of atomic Sn in the conductive 3D percolating Ce-O framework might be exploited as a general strategy for reducing cycling strain in ion-storage materials.
DOI10.1039/c9ta13602a
WOS KeywordANODE MATERIAL ; ION BATTERIES ; LI ; CAPACITY ; LITHIATION ; FLUORIDE ; OXIDES
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
PublisherROYAL SOC CHEMISTRY
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28219
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Xu, JJ,Wang, D,Kong, SY,et al. Pyrochlore phase Ce(2)Sn(2)O(7)via an atom-confining strategy for reversible lithium storage[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020(11):5744.
APA Xu, JJ,Wang, D,Kong, SY,Li, RZ,Hong, ZL,&Huang, FQ.(2020).Pyrochlore phase Ce(2)Sn(2)O(7)via an atom-confining strategy for reversible lithium storage.JOURNAL OF MATERIALS CHEMISTRY A(11),5744.
MLA Xu, JJ,et al."Pyrochlore phase Ce(2)Sn(2)O(7)via an atom-confining strategy for reversible lithium storage".JOURNAL OF MATERIALS CHEMISTRY A .11(2020):5744.
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