Reversible lithium intercalation in a lithium-rich layered rocksalt Li2RuO3 cathode through a Li3PO4 solid electrolyte6

JOURNAL OF POWER SOURCES

卷:300

Article

Zheng, Yueming¹  Hirayama, Masaaki¹  Taminato, Sou¹  Lee, Soyeon^2,3  Oshima, Yoshifumi^3,4  Takayanagi, Kunio^3,5  Suzuki, Kota¹  Kanno, Ryoji¹ 

[1] Tokyo Inst Technol, Dept Elect Chem, Interdisciplinary Grad Sch Sci & Engn, Midori Ku, Yokohama, Kanagawa 2268502, Japan

[2] Tokyo Inst Technol, Quantum Nanoelect Res Ctr, Meguro Ku, Tokyo 1528551, Japan

[3] JST CREST, Chiyoda Ku, Tokyo 1020075, Japan

[4] Japan Adv Inst Sci & Technol, Sch Mat Sci 1, Nomi, Ishikawa 9231292, Japan

[5] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

关键词: All-solid-state battery;    Thin-film battery;    Lithium ruthenium oxide;    Lithium rich layered oxide;    Pulsed laser deposition;   

DOI  :  10.1016/j.jpowsour.2015.09.097

来源: Elsevier

【 摘 要 】

Li2RuO3 (001) films with a lithium-rich layered rocksalt structure are epitaxially grown on a Al2O3(0001) substrate through pulsed laser deposition, followed by stacking of an amorphous Li3PO4 solid electrolyte. A half solid-state battery with a Li3PO4/Li2RuO3 cathode, liquid electrolyte, and lithium anode exhibits two redox peak pairs at 3.4 and 3.6 V, demonstrating lithium intercalation in the Li2RuO3 through the Li3PO4 solid electrolyte. All-solid-state batteries are fabricated by Li or In metal anode deposition on the Li3PO4/Li2RuO3. The Li/Li3PO4/Li2RuO3 cell delivers an initial discharge capacity of 101 mAh g(-1), which does not fade significantly over 30 cycles. Furthermore, the Li2RuO3 rate capability is comparable to that of a liquid-type battery. Lithium-rich layered materials are available for use as cathodes in all-solid-state batteries. (C) 2015 Elsevier B.V. All rights reserved.

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