Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
報文
Operando Soft X-ray Absorption Spectroscopic Study of an All-solid-state Lithium-ion Battery Using a NASICON-type Lithium Conductive Glass Ceramic Sheet
Keisuke YAMANAKAKoji NAKANISHIIwao WATANABEToshiaki OHTA
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ジャーナル オープンアクセス

2018 年 86 巻 3 号 p. 128-133

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An electrochemical cell was developed for operando soft X-ray absorption spectroscopic (XAS) study of an all-solid-state lithium-ion battery. Operando XAS experiments were performed for a battery using LiMn2O4 as a cathode material and a NASICON-type lithium conductive glass ceramic sheet (LICGC) as a solid electrolyte. O K-edge, Mn L-edge and Ti L-edge XAS spectra were taken during the charging process up to 2.2 V. Detailed analysis of the XAS spectra revealed that the valence change from Mn3+ to Mn4+ occurred during charge with simultaneous change in the spectrum of O K-pre-edge region. Ti L-edge spectra revealed a partial change from Ti4+ to Ti3+ in the LICGC at the anode side, indicating a rather dispersed anode formation.

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© 2018 The Electrochemical Society of Japan
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