Speaker
Dr
Tomihiro Kamiya
(Japan Atomic Energy Agency (JAEA), Japan)
Description
The ion microbeam analysis is a powerful tool to characterise the distribution and the behaviour of specific elements in the three dimensional space in materials. For the development of advanced lithium ion batteries, especially for large scale applications such as vehicle and energy-storage uses, precise diagnostics of Li especially in the electrode material is strongly desired. The distribution of light elements, in particular Li in Li ion battery materials, have been characterized by combining nuclear reaction analysis (NRA) and particle induced gamma-ray emission (PIGE) techniques. NRA and PIGE measurements were carried out by using the {⁷Li(p,α)⁴He } and the {⁷Li(p,p'γ)} nuclear reactions, respectively. The characterization of other elements different than Li was simultaneously done, by using particle-induced X-ray emission technique (PIXE). Measurements were done at the the proton microbeam system with the spatial resolution of 1 μm at Takasaki Ion Accelerators for Advanced Radiation Application (TIARA) of Japan Atomic Energy Agency (JAEA). The Li distribution was analysed for specially fabricated electrode samples containing micro particles based on metal oxides such as LiₓNi₀.₈Co₀.₁₅Al₀.₀₅O₂ (0.75 ≤ x ≤ 1.0) [1]. Although some other advanced Li- ion batteries cathodes materials were also investigated. The Li distribution is studied as a function of charge conditions and of materials parameters. This paper describes the analysis system dedicated to the Li-ion battery characterization and the main results of some of the experiments.
Acknowledgements
This research activity is was supported in part through the project under the Strategic Japanese-Spanish Cooperative Program on Multidisciplinary Materials Science of the Japan Science and Technology Agency (JST) and also patsially funded by CONCERT-Japan program of JST.
[1] K.Mima, R.Gonzalez-Arrabal, H.Azuma, A.Yamazaki, C.Okuda, Y.Ukyo, H.Sawada, K.Fujita, Y.Kato, J.M.Perlado, S.Nakai, Nucl Instrum Methods B290
(2012) 79–84
Primary author
Dr
Akiyoshi Yamazaki
(University of Tsukuba, Japan)
Co-authors
Dr
Chikaaki Okuda
(Toyota Central R&D Labs. Inc., Japan)
Dr
Hiroshi Sawada
(Toyota Central R&D Labs. Inc., Japan)
Prof.
Jose Manuel Perlado
(Universidad Politécnica de Madrid, Spain)
Dr
Kazuhisa Fujita
(The Graduate School for the Creation of New Photonics Industries, Japan)
Prof.
Kunioki Mima
(The Graduate School for the Creation of New Photonics Industries, Japan)
Mr
Miguel Panizo-Laiz
(Universidad Politécnica de Madrid, Spain)
Dr
Raquel Gonzalez-Arrabal
(Universidad Politécnica de Madrid, Spain)
Takahiro Satoh
(Japan Atomic Energy Agency (JAEA), Japan)
Dr
Tomihiro Kamiya
(Japan Atomic Energy Agency (JAEA), Japan)
Dr
Toshiya Saito
(Toyota Motor Corp., Japan)
Prof.
Yoshiaki Katoh
(The Graduate School for the Creation of New Photonics Industries, Japan)
