Four-dimensional analyses for understanding the position and conduction pathway of ions in the battery under the charge/discharge practical operation by neutron diffraction
| Project/Area Number |
16H04491
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Physical properties of metals/Metal-base materials
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
小野寺 陽平 京都大学, 複合原子力科学研究所, 助教 (20531031)
森 一広 京都大学, 複合原子力科学研究所, 准教授 (40362412)
|
|---|
| Project Period (FY) |
2016-04-01 – 2020-03-31
|
| Project Status |
Completed (Fiscal Year 2019)
|
| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2019: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2016: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
|
|---|
| Keywords | 中性子散乱 / 構造解析 / 蓄電池材料 / Ｘ線回折 / 伝導特性 / 固体電解質 / イオン伝導経路 / イオン伝導体 / X線回折 / イオン伝導 / 原子構造 / イオン伝導度 / 電池 / 回折実験 |
|---|
| Outline of Final Research Achievements |
The realization of all-solid-state batteries is critical for large-scale applications. In this work, we used a cutting-edge neutron diffractometer and analysis programs of the Rietveld and maximum entropy methods to determine ions diffusion pathways in the crystalline solid electrolyte. For the glassy solid electrolyte, the three-dimensional atomic configurations and conduction pathways of ions were clarified by reverse Monte Carlo modeling and bond valence sum imaging programs.
Especially, we focused to determine the F ions diffusion pathways in the superior solid electrolyte Ba0.6La0.4F2.4. We showed that the excessive F ions, located at the specific interstitial sites, migrate to the neighboring F ion sites based on the interstitialcy diffusion mechanism at the operating temperature for all-solid-state fluoride shuttle batteries(FSBs). Understanding the diffusion mechanism of F ions plays a key role in the development of solid electrolytes for FSBs.
|
| Academic Significance and Societal Importance of the Research Achievements |
全固体蓄電池（LIBやFSB）の電池性能をフルに引き出すためには、固体内での伝導イオンの高速移動のみならず、固-固界面で伝導イオン（LiイオンやFイオンなど）の授受が円滑に行われることが重要である。それにもかかわらず、電池を構成する物質の充放電中の構造変化の解析ならびに伝導イオンの移動経路の原子レベルの解明は非常に遅れている。それ故、伝導イオン移動経路の視覚化は学術的に意義の高い研究であると言える。同時に、電池性能を向上させるための要因を原子レベルで解明することは、次世代全固体電池開発の指針を与えることとなり、社会的意義も非常に高い。
|
Report
(5 results)
Research Products
(56 results)
-
-
-
[Journal Article] Experimental Visualization of Interstitialcy Diffusion Pathways in Fast-Fluoride-Ion-Conducting Solid Electrolyte Ba0.6La0.4F2.42020
Author(s)
Kazuhiro Mori, Atsushi Mineshige, Takashi Saito, Maiko Sugiura, Yoshihisa Ishikawa, Fumika Fujisaki, Kaoru Namba, Takashi Kamiyama, Toshiya Otomo, Takeshi Abe, and Toshiharu Fukunaga
-
Journal Title
ACS Appl. Energy Mater.
Volume: 3
Issue: 3
Pages: 2873-2880
DOI
Related Report
Peer Reviewed / Open Access
-
-
-
[Journal Article] Degradation Mechanism of Conversion-Type Iron Trifluoride: Toward Improvement of Cycle Performance2019
Author(s)
Hiroshi Senoh, Keitaro Matsui, Masahiro Shikano, Toyoki Okumura, Hisao Kiuchi, Keiji Shimoda, Keisuke Yamanaka, Toshiaki Ohta, Toshiharu Fukunaga, Hikari Sakaebe, and Eiichiro Matsubara
-
Journal Title
ACS Appl. Mater. Interfaces
Volume: 11
Issue: 34
Pages: 30959-30967
DOI
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
-
[Journal Article] Structure analyses of Fe-substituted Li2S-based positive electrode materials for Li-S batteries.2018
Author(s)
T. Takeuchi, H. Kageyama, N. Taguchi, K. Nakanishi, T. Kawaguchi, K. Ohara, K. Fukuda, A. Sakuda, T. Ohta, T. Fukunaga, H. Sakaebe, H. Kobayashi, E. Matsubara
-
Journal Title
Solid State Ionics
Volume: 320
Pages: 387-391
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
[Journal Article] Structure analyses of Fe-substituted Li2S-based positive electrode materials for Li-S batteries2017
Author(s)
T. Takeuchi, H. Kageyama, N. Taguchi, K. Nakanishi, T. Kawaguchi, K.Ohara, K.Fukuda, A. Sakudaa, T.Ohta, T. Fukunaga, H. Sakaebea, H.Kobayashia, E.Matsubara
-
Journal Title
Solid State Ionics
Volume: 302
Pages: 387-391
Related Report
Peer Reviewed / Open Access
-
-
-
[Journal Article] Real-time observations of lithium battery reactions - operando neutron diffraction analysis during practical operation2016
Author(s)
S. Taminato, M. Yonemura, S. Shiotani, T. Kamiyama, S. Torii, M. Nagao, Y. Ishikawa, K. Mori, T. Fukunaga, Y. Onodera, T. Naka, M. Morishima, Y. Ukyo, D. S. Adipranoto, H. Arai, Y. Uchimoto, Z. Ogumi, K. Suzuki, M. Hirayama, R. Kanno
-
Journal Title
Scientific Reports
Volume: 6
Pages: 28843-28843
NAID
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
-
[Journal Article] Structurl and electronic features of binary Li2S-P2S5 glasses2016
Author(s)
K. Ohara, A. Mitsui, M. Mori, Y. Onodera, S. Shiotani, Y. Koyama, Y. Orikasa, M. Murakami, K. Shimoda, K. Mori, T. Fukunaga, H. Arai, Y. Uchimoto, and Z. Ogumi
-
Journal Title
Scientific Reports
Volume: 6
Pages: 21302-21302
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
