Boosting the Stable Na Storage Performance in 1D Oxysulfide

doi:10.1002/aenm.201900170

	Boosting the Stable Na Storage Performance in 1D Oxysulfide
	Xu, Jijian; He, Jianqiao; Ding, Wei; Hong, Zhanglian; Huang, Fuqiang
刊名	ADVANCED ENERGY MATERIALS
	2019-05-23
卷号	9 期号:20
关键词	material design Na-ion batteries 1D oxysulfide structural units
ISSN号	1614-6832
DOI	10.1002/aenm.201900170
文献子类	Article
英文摘要	Exploring 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.
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27106]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 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).