Middle-range order structure of multi-component Li ion conducting oxides

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656364
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical properties of metals
• Research Institution: Tohoku University
• Principal Investigator: WASEDA Yoshio 東北大学, 多元物質科学研究所, 名誉教授 (00006058)
• Co-Investigator(Kenkyū-buntansha): SHIBATA Hiroyuki 東北大学, 多元物質科学研究所, 教授 (50250824) ; SHINODA Kozo 東北大学, 多元物質科学研究所, 准教授 (10311549) ; FUJIEDA Shun 東北大学, 多元物質科学研究所, 助教 (60551893)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 金属物性 / ナノ物性 / 固体電解質

Outline of Final Research Achievements

The local structure around germanium of LiGe2(PO4)3 with the glass and the natrium super ionic conductor (NASICON)-type glass ceramic was investigated. While the X-ray absorption near edge structure spectra at the Ge K absorption edge of the glass ceramic indicated a distinct peak with a shoulder at higher energy sides, the glass exhibited a broad spectra. In the radial structure function obtained by Fourier transform of the extended X-ray absorption fine structure oscillation, the Ge-O correlation peak of the glass was observed at the shorter distance in comparison with that of the glass ceramic. These results suggest that the local structure around germanium in the glass is different from that of the glass ceramic composed of the GeO6 octahedral units.

Free Research Field

金属物性