Schedule 0 10:40 AM - 11:00 AM [3G06] Tunnel type β-FeOOH for high rate sodium storage *Min Kyoung Cho1, Jae Hyeon Jo1, Ji Ung Choi1, Sun-Jae Kim1, Jong Soon Kim1, Hitoshi Yashiro2, Seung-Taek Myung1 (1. Sejong University in Seoul, Korea, 2. Iwate University, Japan) Keywords:Tunnel structure, Sodium ion battery, conversion reaction