Characterization of electrode/electrolyte interface using X-ray reflectometry and LiNi $_{0.8}$ Co $_{0.2}$ O $_{2}$ epitaxial film electrode synthesized by pulsed laser deposition method

Hirayama, Masaaki*; Sakamoto, Kazuyuki*; Hiraide, Tetsuya*; Mori, Daisuke*; Yamada, Atsuo*; Kanno, Ryoji*; Sonoyama, Noriyuki*; Tamura, Kazuhisa ; Mizuki, Junichiro

An experimental technique was developed for detecting structure changes at the electrode/electrolyte interface of lithium cell using synchrotron X-ray reflectometry and two-dimensional model electrodes with a restricted lattice plane. The electrode was constructed with an epitaxial film of LiNi $_{0.8}$ Co $_{0.2}$ O $_{2}$ synthesized by the pulsed laser deposition method. These films provided an ideal reaction field suitable for detecting structure changes at the electrode/electrolyte interface during the electrochemical reaction. The X-ray reflectometry indicated a formation of a thin-film layer at the LiNi $_{0.8}$ Co $_{0.2}$ O $_{2}$ (1 1 0)/electrolyte interface during the first charge-discharge cycle, while the LiNi $_{0.8}$ Co $_{0.2}$ O $_{2}$ (0 0 3) surface showed an increase in the surface roughness without forming the surface thin-film layer.

Language	:	English
Journal	:	Electrochimica Acta
Volume	:	53
Number	:	2
Pages	:	p.871 - 881
Publication Year/Month	:	2007/12
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Paper URL	:	https://doi.org/10.1016/j.electacta.2007.07.074
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Keywords	:	no keyword
Research Facility	:	SPring-8(大型放射光施設)
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Registration No. : AA20070919
JAEA Abstracts No. : 36000282
Paper Submission No. : 3609

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Characterization of electrode/electrolyte interface using X-ray reflectometry and LiNiCoO epitaxial film electrode synthesized by pulsed laser deposition method

Characterization of electrode/electrolyte interface using X-ray reflectometry and LiNi $_{0.8}$ Co $_{0.2}$ O $_{2}$ epitaxial film electrode synthesized by pulsed laser deposition method