[17a-P4-1~39] 12.3 Functional Materials and Novel Devices

[17a-P4-38] Fabrication and characterization of α-MnO₂ nanoparticles prepared by ultrasonic beads milling towards capacitor electrode materials.

〇(B)Nobuhiro Shimamura¹, Yuma Matsukubo², Toshihiko Arita³, Akito Masuhara^2,4 (1.Fac. of Eng, Yamagata Univ., 2.Grad. Sch. of Sci. Eng, Yamagata Univ., 3.IMRAM, Tohoku Univ., 4.ROEL, Yamagata Univ.)

Keywords:capacitor, alpha-phase manganese dioxide, beads milling

We had been prepared the capacitor electrode using porous-MnO₂-C₆₀ hybridized particles. In this case, due to the hybridized particles are in several micro sizes, performance of our capacitor was low. In this study, we focused on surface area of MnO₂ particles towards capacitor electrode. Using ultrasonic beads milling method, MnO₂ particles size can be reduced from microparticles to nanoparticles and the crystal structure is maintained in alpha phase MnO₂.