[22a-P02-1~10] 1.4 Energy conversion, storage, resources and environment

[22a-P02-3] Nanocarbon-based air-electrode catalysts developed for metal-air battery

Ryota Imamura¹, Takahisa Sakuragi¹, Saeko Matsuo¹, Shunsuke Matsusako¹, Masayoshi Yuasa¹, Tetsuaki Nishida², 〇Nobuto Oka¹ (1.Kindai Univ., 2.Environmental Materials Inst.)

Keywords:Air-electrode catalyst, nanocarbon

Metal-air rechargeable battery needs bifunctional air-electrode catalytic materials, which involve effective oxygen reduction/evolution at the air electrode at the discharge/charge process. We have developed new air-electrode catalysts using carbon nanoparticles synthesized by the solution plasma process. The developed carbon nanoparticles showed an excellent bifunctional oxygen reduction/evolution activity (ORR/OER), being much superior to that of the conventional carbon material: acetylene black. The carbon nanoparticles synthesized using the mixture composed of benzene and N-source showed the highest catalytic activity in Oxygen Reduction Reaction. The carbon nanoparticles synthesized using the mixture composed of benzene and P-source showed the highest catalytic activity in Oxygen evolution reaction.