Fe-P-S electrodes for all-solid-state lithium secondary batteries using sulfide-based solid electrolytes

被引：14

作者：

Fujii, Yuta ^{[1
]}

Kobayashi, Misaki ^{[1
]}

Miura, Akira ^{[2
]}

Rosero-Navarro, Nataly Carolina ^{[2
]}

Li, Minchan ^{[3
,4
]}

Sun, Jianguo ^{[4
]}

Kotobuki, Masashi ^{[4
]}

Lu, Li ^{[4
]}

Tadanaga, Kiyoharu ^{[2
]}

机构：

[1] Hokkaido Univ, Grad Sch Chem Sci & Engn, Sapporo, Hokkaido 0608628, Japan

[2] Hokkaido Univ, Fac Engn, Sapporo, Hokkaido 0608628, Japan

[3] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

[4] Natl Univ Singapore, Dept Mech Engn, Singapore 117575, Singapore

来源：

JOURNAL OF POWER SOURCES | 2020年 / 449卷

基金：

日本科学技术振兴机构;

关键词：

Lithium-sulfur battery; All-solid-state battery; Fe-based composite cathode material; High-capacity electrode; HIGH-TEMPERATURE PERFORMANCE; PHOSPHORUS-DOPED COS2; ELECTROCHEMICAL PROPERTIES; LI-S; CATHODE MATERIAL; REACTION-MECHANISM; FEPS3; ELECTRODES; ANODE MATERIALS; AMORPHOUS MOS3; TRANSITION;

D O I：

10.1016/j.jpowsour.2019.227576

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：

Although lithium-sulfur batteries are expected to be the next-generation high-capacity battery of choices, the sulfur electrodes studied so far contain large amounts (typically 30-60 wt%) of carbon additives, resulting in low energy density. In this study, an Fe-P-S-based material is prepared and characterized for the use as a sulfur electrode with a low content of carbon additives. The electrode material based on Fe-P-S is synthesized by the mechanical milling of FePS3 and elemental sulfur. The ball-milled 70FePS(3)center dot 30S (wt%) electrode comprises FeS2 particles of similar to 30 nm in size and amorphous P-S. The all-solid-state battery operated at 100 degrees C exhibits a reversible capacity of more than 625 mAh g(-1) for 50 cycles at 0.51 mA cm(-2) (similar to 0.1C) in spite of the low carbon content (2 wt%) in the electrode. During the discharge-charge cycle, the sulfur component is confirmed to be both reduced and oxidized, cyclically.

引用

页数：7

共 62 条

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