In-situ nanoscale Li diffusion measurements in Li battery materials using a radiotracer of 8Li

• Project/Area Number: 25390036
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nanomaterials engineering
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: ISHIYAMA HIRONOBU 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 協力研究員 (50321534)
• Co-Investigator(Renkei-kenkyūsha): JEONG Sunchan 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 協力研究員 (00262105) ; HIRAYAMA Yoshikaza 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 研究機関講師 (30391733) ; OSA Akihiko 独立行政法人日本原子力研究開発機構, 原子力科学研究所, 研究主幹 (80343929) ; SATAKA Masao 独立行政法人日本原子力研究開発機構, 原子力科学研究所, 研究主幹 (70354826)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: ナノマイクロ構造解析・評価・試験法 / 放射性トレーサー / リチウム2次電池 / 拡散係数

Outline of Final Research Achievements

We have developed a new in-situ nanoscale diffusion measurement method in solids for secondary lithium-ion batteries using a radioactive 8Li tracer. We have found the detection limit of the lithium diffusion coefficient has been improved to the order of 10^-12 cm^2/s by detecting alpha particles emitted at a small angle relative to a sample surface that is irradiated with a low-energy 8Li of about 8 keV. The measurements of Li diffusion coefficients in LVSO, which is used as a solid electrolyte, LiCoO2 and LiMn2O4, which are used as positive electrodes in Li Batteries, have successfully performed and the Li diffusion coefficients have been deduced. The new method has been established to be applicable for in-situ nanoscale diffusion measurement in materials of Li ion secondary batteries.

Research Products

• [Int'l Joint Research] Institute for Basic Science(韓国)
• [Journal Article] Direct measurement of nanoscale lithium diffusion in solid battery materials using radioactive tracer of 8Li (2016)
  • Author(s): H. Ishiyama, S.C. Jeong, Y.X. Watanabe, Y. Hirayama, N. Imai, H.S. Jung, H. Miyatake, M. Oyaizu, A. Osa, Y. Otokawa, M. Matsuda, K. Nishio, H. Makii, T.K. Sato, N. Kuwata, J. Kawamura, H. Ueno, Y.H. Kim, S. Kimura, M. Mukai
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms Volume: - Pages: 379-381
  • DOI: 10.1016/j.nimb.2015.12.036
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] In situ lithium diffusion measurement in solid ionic conductors using short-lived radiotracer beam of 8Li (2015)
  • Author(s): H. Ishiyama, S.C. Jeong, Y.X. Watanabe, Y. Hirayama, N. Imai, H. Miyatake, M. Oyaizu, A. Osa, Y. Otokawa, M. Matsuda, K.Nishio, H. Makii, T.K. Sato, N. Kuwata, J. Kawamura, A. Nakao, H. Ueno, Y.H. Kim, S. Kimura, M. Mukai
  • Journal Title: Nuclear Instruments and Methods B Volume: 354 Pages: 297-300
  • DOI: 10.1016/j.nimb.2014.10.031
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Nanoscale diffusion tracing by radioactive 8Li tracer (2014)
  • Author(s): H. Ishiyama, S.-C. Jeong, Y. Watanabe, Y. Hirayama, N. Imai, H. Miyatake, M. Oyaizu, I. Katayama, A. Osa, Y. Otokawa, M. Matsuda, K. Nishio, H. Makii, T. Sato, N. Kuwata, J. Kawamura, A. Nakao, H. Ueno, Y. H. Kim, S. Kimura, M. Mukai
  • Journal Title: Japanese Journal of Applied Physics Volume: 53 Issue: 11 Pages: 110303-110303
  • DOI: 10.7567/jjap.53.110303
  • Peer Reviewed / Open Access
• [Journal Article] 短寿命核トレーサー8Liによるリチウム拡散係数測定の現状 (2014)
  • Author(s): 石山博恒、他
  • Journal Title: KURRI-KR Volume: 202 Pages: 16-19
  • Acknowledgement Compliant
• [Journal Article] In situ diffusion measurements in solids using short-lived radioactive tracers of 8Li and 20Na (2013)
  • Author(s): H. Ishiyama, S. C. Jeong, Y. X. Watanabe, Y. Hirayama, N. Imai, H. Miyatake, M. Oyaizu, I. Katayama, M. Sataka, A. Osa, Y. Otokawa, M. Matsuda, H. Makii, K. Nishio, T. K. Sato, A. Nakao
  • Journal Title: Nuclear Instruments and Methods in Physics Research B Volume: 317 Pages: 789-792
  • DOI: 10.1016/j.nimb.2013.07.054
  • Peer Reviewed
• [Journal Article] Measurement of Lithium Diffusion Coefficients in Battery Material Using Radioactive Tracer of 8Li (2013)
  • Author(s): H. Ishiyama, S. C. Jeong, Y. X. Watanabe, Y. Hirayama, N. Imai, H. Miyatake, K. Nishio, H. Makii, A. Osa, Y. Otokawa, M. Matsuda, T. K. Sato, N. Kuwata, J. Kawamura, A. Nako, H. Ueno, Y. H. Kim, S. Kimura, M. Mukai
  • Journal Title: 京都大学原子炉実験所 KUR Report Volume: KURRI-KR-195 Pages: 31-34
• [Presentation] Direct measurement of nanoscale lithium diffusion in solid battery materials using radioactive tracer of 8Li (2015)
  • Author(s): H. Ishiyama, S.C. Jeong, Y.X. Watanabe, Y. Hirayama, N. Imai, H. Miyatake, M. Oyaizu, A. Osa, Y. Otokawa, M. Matsuda, K.Nishio, H. Makii, T.K. Sato, N. Kuwata, J. Kawamura, H. Ueno, Y.H. Kim, S. Kimura, M. Mukai
  • Organizer: International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2015)
  • Place of Presentation: Grand Rapids, MI, USA
  • Year and Date: 2015-05-11
  • Int'l Joint Research
• [Presentation] 放射性トレーサー8Li法によるリチウム電池固体材料内のリチウム拡散直接測定 (2015)
  • Author(s): 石山博恒
  • Organizer: SATテクノロジー・ショーケース2015 (SAT2015)
  • Place of Presentation: つくば国際会議場
  • Year and Date: 2015-01-21
• [Presentation] 放射性トレーサー8Liによるリチウム拡散係数測定の現状 (2014)
  • Author(s): 石山博恒、他
  • Organizer: 平成26年度KUR専門研究会「短寿命RIを用いた核分光と核物性研究」
  • Place of Presentation: 京都大学
  • Year and Date: 2014-12-17 – 2014-12-18
• [Presentation] 放射性トレーサー8Liによるリチウム電池個体材料中の拡散係数測定法開拓 (2014)
  • Author(s): 石山博恒、他
  • Organizer: 第17回超イオン導電体物性研究会
  • Place of Presentation: 日本大学
  • Year and Date: 2014-07-18 – 2014-07-19
• [Presentation] In situ lithium diffusion measurements in solid ionic conductors using short-lived radiotracer beam of 8Li (2014)
  • Author(s): H. Ishiyama, S.C. Jeong, et al.,
  • Organizer: The International Conference on Atomic Collisions in Solids (ICACS 26)
  • Place of Presentation: Debrechen, Hungary
  • Year and Date: 2014-07-13 – 2014-07-18
• [Presentation] Nanoscale lithium diffusion measurements using low-energy radioactive beam of 8Li (2014)
  • Author(s): H. Ishiyama, et al.,
  • Organizer: 2nd Conference on Advance in Radioactive Isotope Science (ARIS2014)
  • Place of Presentation: 東京大学
  • Year and Date: 2014-06-02 – 2014-06-06
• [Presentation] 放射性トレーサー8Liによるリチウム拡散係数測定法開拓
  • Author(s): 石山博恒
  • Organizer: 「タンデム領域の重イオン科学」研究会
  • Place of Presentation: 日本原子力研究開発機構先端基礎センター
• [Presentation] 放射性トレーサー8Liによるリチウム電池固体材料中のリチウム拡散係数測定法開拓
  • Author(s): 石山博恒、他
  • Organizer: 第16回超イオン導電体物性研究会/第63回固体イオニクス研究会
  • Place of Presentation: 日立シビックセンター
• [Presentation] 短寿命核トレーサー8Liによる電池材料中のリチウム拡散係数測定
  • Author(s): 石山博恒、他
  • Organizer: 「不安定原子核の理工学と物性応用研究III」専門研究会
  • Place of Presentation: 京都大学原子炉実験所
• [Remarks] KEK素粒子原子核研究所短寿命核ビーム実験
  • URL: http://www.kek.jp/ja/Research/IPNS/ShortLivedNucleiRandD/
• [Remarks] KEK RNB Group
  • URL: http://kekrnb.kek.jp/index.html
• [Remarks] KEK短寿命核グループホームページ
  • URL: http://kekrnb.kek.jp/index.php?FrontPage