[10a-Z25-1~9] 12.2 Characterization and Materials Physics

[10a-Z25-7] Analysis of oxidation reaction of Co Prussian blue analogues by in situ IR measurements

〇Hideharu Niwa^1,2,3, Toshiaki Moriya¹, Takayuki Shibata⁴, Yutaka Moritomo^1,2,3 (1.Grad. Sch. Pure and Appl. Sci., Univ. Tsukuba, 2.Fac. Pure and Appl. Sci., Univ. Tsukuba, 3.TREMS, Univ. Tsukuba, 4.Natl. Inst. of Tech., Gunma College)

Keywords:infrared spectroscopy, Prussian blue analogue, secondary battery

Redox site of Co-Prussian blue analogues are investigated by in situ infrared absorption spectroscopy. With use of an empirical rule of the frequencies of the CN^- stretching mode of ferrocyanide ([Fe^II(CN)₆]^4-) and ferricyanide ([Fe^III(CN)₆]^3-), redox site of Na_xCo[Fe(CN)₆]_0.90, Na_xCo[Fe(CN)₆]_0.81, Na_xCo[Fe(CN)₆]_0.71 were assigined.