Kyoto University · Engineering
Professor Kohei Miyazaki's research lab specializes in the development of advanced functional materials for sustainable energy applications, with a primary focus on energy storage and conversion technologies. The lab investigates novel electrode materials, particularly zinc-based batteries and perovskite-based electrocatalysts, using innovative synthesis techniques such as electrospray pyrolysis. Key research directions include dendrite suppression in zinc metal anodes through surface modification with ion-exchange polymers and the design of highly efficient, carbon-nanotube-supported perovskite oxides for oxygen reduction reactions in alkaline environments. The lab emphasizes materials engineering for improved electrochemical performance, stability, and scalability in next-generation energy devices.
Figures are computed from collected data and may differ slightly.
Zinc oxide electrodes modified with an anion-exchange ionomer (AEI) are fabricated to suppress the dendrite formation of metallic zinc deposition. Charge-discharge measurements show that the discharge capacities and efficiencies of AEI-modified ZnO electrodes are superior to those of bare ZnO electrodes. These improvements are explained by the selective ion permeation through the AEI films. In addition, we demonstrate that the AEI-modified ZnO electrodes work well as a rechargeable negative elec
Composites of nano-sized perovskite-type oxides of La1−xSrxMnO3 (LSMO) and carbon nanotubes (CNTs) were synthesized in a single step by the electrospray pyrolysis method, and their electrocatalytic activities for oxygen reduction were evaluated in an alkaline solution. The resulting LSMO nanoparticles with a diameter of less than 20 nm were well dispersed and deposited on the surface of CNTs. Elemental analysis showed that the metal-composition of LSMO/CNT composites was controlled by altering t
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