Processing and microstructural characterization of structure controlled battery materials

2016 Fiscal Year Final Research Report

• 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
• 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

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.

Free Research Field

材料工学