[14a-2H-1~11] 6.3 Oxide electronics

[14a-2H-4] EXAFS Analysis of Layered Oxides as Sodium Ion Secondary Battery Cathode Material

〇(M1)Shota Akama¹, Takayuki Shibata², Masamitsu Takachi¹, Wataru Kobayashi^1,2, Yutaka Moritomo^1,2,3 (1.Grad. Sch. Pure and Appl. Sci., Univ. Tsukuba, 2.Fac. Pure and Appl. Sci., Univ. Tsukuba, 3.CiRfSE)

Keywords:sodium ion secondary battery,layered oxide,substitution

Since Na is a cheap and ubiquitous element, sodium ion secondary batteries (SIBs) can be applied for large-scale batteries. P2-type Na_xMn_1-yMg_yO₂ is a possible candidate for cathode material of SIBs due to its good cyclability and capacity. To investigate a relationship between the cyclability and local structure, we performed EXAFS (Extended X-ray Absorption Fine Structure) analysis of Na_xMn_1-yMg_yO₂.