Surface Characterization of LiFePO4 Epitaxial Thin Films by X-ray/Neutron Reflectometry

Masaaki HIRAYAMA; Masao YONEMURA; Kouta SUZUKI; Naoya TORIKAI; Hillary SMITH; Erik WATKINSAND; Jarek MAJEWSKI; Ryoji KANNO

doi:10.5796/electrochemistry.78.413

コミュニケーション

Surface Characterization of LiFePO₄ Epitaxial Thin Films by X-ray/Neutron Reflectometry

Masaaki HIRAYAMA, Masao YONEMURA, Kouta SUZUKI, Naoya TORIKAI, Hillary SMITH, Erik WATKINSAND, Jarek MAJEWSKI, Ryoji KANNO

著者情報

Masaaki HIRAYAMA
Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology
Masao YONEMURA
Institute of Applied Beam Science, Graduate School of Science and Engineering, Ibaraki University
Kouta SUZUKI
Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology
Naoya TORIKAI
Department of Chemistry for Materials, Faculty of Engineering and Graduate School of Engineering, Mie University
Hillary SMITH
Los Alamos National Lab, Lujan Neutron Scattering Center
Erik WATKINSAND
Los Alamos National Lab, Lujan Neutron Scattering Center
Jarek MAJEWSKI
Los Alamos National Lab, Lujan Neutron Scattering Center
Ryoji KANNO
Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology

キーワード: Lithium Batteries, Interfacial Structure, in situ Observation, Neutron Scattering

ジャーナルフリー

2010 年 78 巻 5 号 p. 413-415

DOI https://doi.org/10.5796/electrochemistry.78.413

詳細

抄録

The electrode surface of a lithium battery was characterized using in situ reflectivity techniques and epitaxial thin films. Epitaxial LiFePO₄ thin films were fabricated by pulsed laser deposition. Changes in interfacial structures on the surface are determined by X-ray and neutron reflectivity (NR) measurements using an X-ray-transmission electrochemical cell. The LiFePO₄ surface is stable during the first charge/discharge process. NR analysis indicates a reversible change in the concentration gradient of lithium ions at the LiFePO₄/electrolyte interface on lithium deintercalation.

責任著者(Corresponding author)

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