Processing and microstructural characterization of structure controlled battery materials

• Project/Area Number: 26420693
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Japan Fine Ceramics Center
• Principal Investigator: Ikuhara Yumi 一般財団法人ファインセラミックスセンター, その他部局等, 主任研究員 (80450849)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: リチウムイオン電池 / 表面ナノ構造 / 正極 / 構造欠陥 / 遷移金属酸化物 / 配向薄膜 / 正極膜 / 蓄電池材料 / リチウムイオン二次電池 / 透過型電子顕微鏡 / 微細構造 / 結晶構造解析 / 複合錯体 / リチウムイオン

Outline of Final Research Achievements

Structure controlled cathodic thin films for lithium ion secondary batteries were successfully fabricated from precursor solutions. Direct observation of atom columns of all elements of the prepared battery materials can be achieved by scanning transmission electron microscopy using annular bright-field detectors. It is clarified that microstructural deformation influenced the electrochemical property. In particular,　the surface deformation caused by antisite defects and oxygen loss appears to be a major contributor to the capacity fading when LiCoPO4 is used as the cathode material in secondary Li-ion batteries.

Research Products

• [Journal Article] Atomic Level Changes during Capacity Fade in Highly Oriented Thin Films of Cathode Material LiCoPO4 (2017)
  • Author(s): Y. H. Ikuhara, X. Gao, C. A. J. Fisher, A. Kuwabara, H. Moriwake, K. Kohama and Y. Ikuhara
  • Journal Title: J. Mater. Chem. A Volume: 5 Issue: 19 Pages: 9729-9738
  • DOI: 10.1039/c6ta10084h
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Atomic Scale Imaging of Structural Variations in La(1-x)/3LixNbO3 Solid Electrolytes (2017)
  • Author(s): X. Hu, S. Kobayashi, Y.H. Ikuhara, C.A.J. Fisher, Y. Fujiwara, K. Hoshikawa, H. Moriwake, K. Kohama, H. Iba and Y. Ikuhara
  • Journal Title: Acta Mater Volume: 123 Pages: 167-176
  • DOI: 10.1016/j.actamat.2016.10.025
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Atomic Scale Imaging of Structural Changes in Solid Electrolyte Lanthanum Lithium Niobate upon Annealing (2017)
  • Author(s): X. Hu, C. A. J. Fisher, S. Kobayashi, Y. H. Ikuhara, Y. Fujiwara, K. Hoshikawa, H. Moriwake, K. Kohama, H. Iba and Y. Ikuhara
  • Journal Title: Acta Mater. Volume: 127 Pages: 211-219
  • DOI: 10.1016/j.actamat.2017.01.028
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Three-Dimensional Cobalt Phosphide Nanowire Arrays as Negative Electrode Material for Flexible Solid-State Asymmetric (2017)
  • Author(s): Z. Zheng, M. Retana, X. Hu, R. Luna, Y. H. Ikuhara, and W. Zhou
  • Journal Title: ACS Appl.Mater. Interfaces Volume: - Issue: 20 Pages: 16986-16994
  • DOI: 10.1021/acsami.7b01109
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Atomistic structural analysis of cathodic LiCoPO4 thin films for lithium ion secondary batteries (2016)
  • Author(s): Yumi H. Ikuhara, Xiang Gao, Yoshiyuki Sugawara, Craig. A. J. Fisher, Akihide Kuwabara, Hiroki Moriwake, Keiichi Kohama and Yuichi Ikuhara
  • Journal Title: AMTC Letters Volume: 5 Pages: 186-187
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Epitaxial growth of LiMn2O4 thin films by chemical solution deposition method for multilayer lithium ion batteries (2014)
  • Author(s): Yumi H. Ikuhara, Xiang Gao, Rong Huang, Craig A. J. Fisher, Akihide Kuwabara, Hiroki Moriwake, and Keiichi Kohama
  • Journal Title: J. Phys. Chem. C Volume: 118 Issue: 34 Pages: 19540-19547
  • DOI: 10.1021/jp504305q
  • Peer Reviewed
• [Presentation] Fabrication and characterization of structure-controlled cathodic thin films for lithium ion secondary batteries (2017)
  • Author(s): Y. H. Ikuhara, X. Gao, Y. Sugawara, C. A. J. Fisher, A. Kuwabara, H. Moriwake, K. Kohama and Y. Ikuhara
  • Organizer: 12th Pacific Rim Conference on Ceramic and Glass Technology (PACRIM 12)
  • Place of Presentation: Waikoloa(米国)
  • Year and Date: 2017-05-22
  • Int'l Joint Research
• [Presentation] La(1-x)/3LixNbO3固体電解質のLi濃度と微細構造との相関 (2017)
  • Author(s): 幾原裕美，胡肖兵，小林俊介，Fisher Craig，森分博紀,藤原靖幸，干川圭吾,小浜恵一，射場英紀,幾原雄一
  • Organizer: 日本セラミックス協会2017年年会
  • Place of Presentation: 日本大学 (東京)
  • Year and Date: 2017-03-17
• [Presentation] Microstructural characterization of oriented cathodic thin films for lithium ion batteries prepared by chemical solution deposition (2016)
  • Author(s): Yumi H. Ikuhara, Xiang Gao, Craig A. J. Fisher, Akihide Kuwabara, Hiroki Moriwake, Keiichi Kohama, Yuichi Ikuhara
  • Organizer: 18th International Meeting on Lithium Batteries
  • Place of Presentation: Chicago(米国)
  • Year and Date: 2016-06-20
  • Int'l Joint Research
• [Presentation] Processing and microstructure of cathode materials for lithium ion secondary battery (2016)
  • Author(s): Yumi H. Ikuhara
  • Organizer: East China Normal University Key Laboratory of Polar Materials and Devices
  • Place of Presentation: Shanghai(China)
  • Year and Date: 2016-04-14
  • Invited
• [Presentation] 化学溶液法によるLiイオン電池用正極膜の合成と構造解析 (2016)
  • Author(s): 幾原裕美、高翔、菅原義之、クレイグ・フィッシャー、桑原彰秀、森分博紀、幾原雄一、小浜恵一
  • Organizer: 日本セラミックス協会2016年年会
  • Place of Presentation: 東京
  • Year and Date: 2016-03-14
• [Presentation] 化学溶液法によるLiイオン電池用正極膜の合成と微細構造解析 (2015)
  • Author(s): 幾原裕美，高翔，菅原義之，クレイグ・フィッシャー，桑原彰秀、森分博紀、幾原雄一、小浜恵一
  • Organizer: 第56回電池討論会
  • Place of Presentation: 名古屋
  • Year and Date: 2015-11-11
• [Presentation] Microstructures of Li-ion battery thin films epitaxially grown by chemical solution deposition (2015)
  • Author(s): Yumi H. Ikuhara, Xiang Gao, Craig A. J. Fishe, Akihide Kuwabara, Hiroki Moriwake, Yuichi Ikuhara and Keiichi Kohama
  • Organizer: Materials Science and Technology 2015
  • Place of Presentation: Columbus, USA
  • Year and Date: 2015-10-04
  • Int'l Joint Research
• [Presentation] Microstructures, interfaces and properties of the epitaxially grown Li ion crystals by CSD method (2014)
  • Author(s): Yumi H. Ikuhara
  • Organizer: 2014 Collaborative Conference on Materials Research
  • Place of Presentation: Incheon
  • Year and Date: 2014-06-23 – 2014-06-27
  • Invited
• [Presentation] Chemical processing and microstructures of thin films for Li battery application (2014)
  • Author(s): Yumi H. Ikuhara, Xiang Gao, Craig A. J. Fisher, Akihide Kuwabara, Hiroki Moriwake, Rong Huang, Yuichi Ikuhara and Keiichi Kohama
  • Organizer: 13th International Conference on Modern Materials and Technologies
  • Place of Presentation: Montecatini Terme
  • Year and Date: 2014-06-08 – 2014-06-13