Carbon-Free O2 Cathode with Three-Dimensional Ultralight Nickel Foam-Supported Ruthenium Electrocatalysts for Li–O2 Batteries

A new carbon- and binder-free O 2 cathode was fabricated by electroplating Ru-nanoparticle-coated ultralight Ni foam, which has good electron-conducting and electrocatalytic properties. This all-metal monolithic structure was able to suppress CO 2 evolution and provided 306 times higher capacity than commercial Ni foam-based O 2 cathodes. Graphical That′s so metal : A new carbon- and binder-free O 2 cathode is fabricated by electroplating Ru-nanoparticle-coated ultralight Ni foam, which has good electron-conducting and electrocatalytic properties. This all-metal monolithic structure suppresses CO 2 evolution and provides 306 times higher capacity than commercial Ni foam-based O 2 cathodes.