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Boosting the Stable Na Storage Performance in 1D Oxysulfide
Xu, Jijian; He, Jianqiao; Ding, Wei; Hong, Zhanglian; Huang, Fuqiang
2019-05-23
Source PublicationADVANCED ENERGY MATERIALS
ISSN1614-6832
Volume9Issue:20
SubtypeArticle
AbstractExploring new structure prototypes and phases by material design, especially anode materials, is essential to develop high-performance Na-ion batteries. This study proposes a new anode, Na2Cu2.09O0.50S2, with a 1D crystal structure and outstanding Na storage performance. In view of the crystal structure of Na2Cu2.09O0.50S2, [Cu4S4] chains act as electrically conducting units enabling conductivity as high as 0.5 S cm(-1). The residual Na-4[CuO] chains act as ionically conducting units forming rich channels for the fast conduction of Na ions as well as maintaining the structural stability even after Na ion extraction. Additional ball milling on the as-prepared Na2Cu2.09O0.50S2 significantly decreases its grain size, achieving a capacity of 588 mA h g(-1) with a high initial Coulombic efficiency of 93% at 0.2 A g(-1). Moreover, the Na2Cu2.09O0.50S2 anode demonstrates outstanding rate capability (408 mA h g(-1) at 2 A g(-1)) and extending cyclic performance (82% of capacity retention after 400 cycles). The general structural design idea based on functional units may offer a new avenue to new electrode materials.
Keywordmaterial design Na-ion batteries 1D oxysulfide structural units
DOI10.1002/aenm.201900170
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science ; Physics
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27106
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Xu, Jijian,He, Jianqiao,Ding, Wei,et al. Boosting the Stable Na Storage Performance in 1D Oxysulfide[J]. ADVANCED ENERGY MATERIALS,2019,9(20).
APA Xu, Jijian,He, Jianqiao,Ding, Wei,Hong, Zhanglian,&Huang, Fuqiang.(2019).Boosting the Stable Na Storage Performance in 1D Oxysulfide.ADVANCED ENERGY MATERIALS,9(20).
MLA Xu, Jijian,et al."Boosting the Stable Na Storage Performance in 1D Oxysulfide".ADVANCED ENERGY MATERIALS 9.20(2019).
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