Structure analyses using X-ray photoelectron spectroscopy and X-ray absorption near edge structure for amorphous MS3 (M: Ti, Mo) electrodes in all-solid-state lithium batteries

JOURNAL OF POWER SOURCES

卷:313

Article

Matsuyama, Takuya¹  Deguchi, Minako¹  Mitsuhara, Kei²  Ohta, Toshiaki²  Mod, Takuya³  Orikasa, Yuki³  Uchimoto, Yoshiharu³  Kowada, Yoshiyuki⁴  Hayashi, Akitoshi¹  Tatsumisago, Masahiro¹ 

[1] Osaka Prefecture Univ, Grad Sch Engn, Dept Appl Chem, Naka Ku, 1-1 Gakuen Cho, Sakai, Osaka 5998531, Japan

[2] SR Ctr Ritsumeikan Univ, 1-1-1 Noji Higashi, Kusatsu, Shiga 5258577, Japan

[3] Kyoto Univ, Grad Sch Human & Environm Studies, Dept Interdisciplinary Environm, Sakyo Ku, Yoshida Nihonmatsu Cho, Kyoto 6068501, Japan

[4] Hyogo Univ Teachers Educ, Dept Nat Sci, 942-1 Shimokume, Kato City, Hyogo 6731494, Japan

关键词: All-solid-state battery;    Lithium battery;    TiS3;    MoS3;    XPS;    XANES;   

DOI  :  10.1016/j.jpowsour.2016.02.044

来源: Elsevier

【 摘 要 】

Electronic structure changes of sulfurs in amorphous TiS3 and MoS3 for positive electrodes of all-solid-state lithium batteries are examined by X-ray photoelectron spectroscopy (XPS) and the X-ray absorption near edge structure (XANES). The all-solid-state cell with amorphous TiS3 electrode shows the reversible capacity of about 510 mAh g(-1), for 10 cycles with sulfur-redox in amorphous TiS3 during charge-discharge process. On the other hand, the cell with amorphous MoS3 shows the 1st reversible capacity of about 720 mAh g(-1).The obtained capacity is based on the redox of both sulfur and molybdenum in amorphous MoS3. The irreversible capacity of about 50 mAh g(-1) is observed at the 1st cycle, which is attributed to the irreversible electronic structure change of sulfur during the 1st cycle. The electronic structure of sulfur in amorphous MoS3 after the 10th charge is similar to that after the 1st charge. Therefore, the all-solid-state cell with amorphous MoS3 electrode shows relatively good cydability after the 1st cycle. (c) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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