Properties of Composite Electrodes for All-solid-state Fluoride-ion Secondary Batteries Processed by High-pressure Torsion oleh Yanchang WANG, Sangmin LEE, Kentaro YAMAMOTO, Toshiyuki MATSUNAGA, Hidenori MIKI, Hideki IBA, Koichi TSUCHIYA, Tomoki UCHIYAMA, Toshiki WATANABE, Tsuyoshi TAKAMI, Yoshiharu UCHIMOTO