▎ 摘 要
NOVELTY - A catalyst comprises composite complex of iron-containing grains and a graphene oxide. USE - Catalyst for air side electrodes of fuel cell (claimed). ADVANTAGE - Catalyst can improve durability with use of repetition of fuel cell, and increasing output of fuel cell. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for air side electrode for fuel cells, which comprises fuel side electrode, and electrolyte layer arranged oppositely between air side electrode and fuel side electrode.