Strontium-doped iridium-manganese solid solution nanoparticle-carbon nanotube composite material and preparation method thereof

The invention discloses a strontium-doped iridium-manganese solid solution nanoparticle-carbon nanotube composite material. The strontium-doped iridium-manganese solid solution nanoparticle-carbon nanotube composite material comprises strontium-doped iridium-manganese solid solution nanoparticles and a carbon oxide nanotube, the strontium-doped iridium-manganese solid solution nanoparticles are loaded on the surface of the oxidized carbon nanotube; the component of the strontium-doped iridium manganese solid solution nanoparticles is Sr < x > Ir < y > Mn < 1-x-y > O < 2 >, wherein x < lt > is more than or equal to 0.08; 0.30, 0.08 < = y < lt >; 0.50, 0.16 lt, 0.16 lt; x + y < lt >; and 0.50. The invention also discloses a preparation method of the strontium-doped iridium manganese solid solution nanoparticle-carbon nanotube composite material. The use amount of Ir is reduced, higher OER catalytic activity and stability are achieved, the problems that a traditional IrO2 catalyst is low in activity, poor in sta