Layered Oxysulfides Sr2MnO2Cu2m-0.5Sm+1 (m=1, 2, and 3) as Insertion Hosts for Li ion batteries

被引：43

作者：

Indris, Sylvio

Cabana, Jordi

Rutt, Oliver J.

Clarke, Simon J.

Grey, Clare P.

机构：

[1] Univ Oxford, Dept Chem, Inorgan Chem Lab, Oxford OX1 3QR, England

[2] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 41期

关键词：

COPPER EXTRUSION; LITHIUM; CHEMISTRY; ELECTRODE; CU3P;

D O I：

10.1021/ja064961a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The layered oxysulfides Sr2MnO2Cu2m-0.5Sm+1 (m = 1-3) consist of alternating perovskite-type Sr2MnO2 layers and copper sulfide layers. The copper ions can be replaced electrochemically and reversibly by Li. The lithiated materials were studied by Li MAS NMR, and Li resonances were observed with shifts that could be rationalized based on the number of sulfide layers. The materials were cycled versus Li and showed enhanced capacity retention in comparison to pure Cu2S; the good electrochemical performance was ascribed to the presence of the layered framework structure and rapid Li+ and Cu+ conductivity in the sulfide layers. Copyright © 2006 American Chemical Society.

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页码：13354 / 13355

页数：2

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