Structure analyses of Fe-substituted Li2S-based positive electrode materials for Li-S batteries

被引：10

作者：

Takeuchi, Tomonari ^{[1
]}

Kageyama, Hiroyuki ^{[2
]}

Taguchi, Noboru ^{[1
]}

Nakanishi, Koji ^{[3
]}

Kawaguchi, Tomoya ^{[2
]}

Ohara, Koji ^{[4
]}

Fukuda, Katsutoshi ^{[2
]}

Sakuda, Atsushi ^{[1
]}

Ohta, Toshiaki ^{[3
]}

Fukunaga, Toshiharu ^{[2
]}

Sakaebe, Hikari ^{[1
]}

Kobayash, Hironori ^{[1
]}

Matsubara, Eiichiro ^{[2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Midorigaoka 1-8-31, Ikeda, Osaka 5638577, Japan

[2] Kyoto Univ, Off Soc Acad Collaborat Innovat, Uji, Kyoto 6110011, Japan

[3] Ritsumeikan Univ, Synchrotron Radiat Ctr, 1-1-1 Noji Higashi, Kusatsu, Shiga 5258577, Japan

[4] Japan Synchrotron Radiat Res Inst JASRI, Res & Utilizat Div, 1-1-1 Kouto, Sayo, Hyogo 6795198, Japan

来源：

SOLID STATE IONICS | 2018年 / 320卷

关键词：

Fe-substituted lithium sulfide; Low crystalline material; Lithium sulfur battery; Pair distribution function analysis; High capacity; RECHARGEABLE LITHIUM BATTERIES; ELECTROCHEMICAL PROPERTIES; SECONDARY BATTERY; CRYSTAL-STRUCTURE; SULFUR BATTERIES; CATHODE MATERIAL; COMPOSITES; ENERGY;

D O I：

10.1016/j.ssi.2018.03.028

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The structure of Fe-substituted Li2S-based positive electrode material Li8FeS5 was analyzed using high-energy Xray total scattering measurements. Pair distribution function (PDF) analyses indicated that the mechanically milled Li8FeS5 sample could best be described as having an anti-fluorite structure in which Fe ions partially occupy Li sites in the Fm (3) over barm unit cell. The electrochemical properties of a cell utilizing Li8FeS5 as the positive electrode were also consistent with this structural model.

引用

页码：387 / 391

页数：5

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