High-dispersion spherical iridium powder with particle size less than 1 [mu] m as well as preparation method and application thereof

The invention discloses high-dispersion spherical iridium powder with the particle size smaller than 1 micron as well as a preparation method and application of the high-dispersion spherical iridium powder. The preparation problem of the high-dispersion spherical iridium powder with the uniform and small particle size and the controllable particle size is solved. When the iridium powder is prepared, high-dispersion spherical precursor precipitation powder with the controllable particle size is obtained by regulating and controlling the molar ratio of sulfate ions to iridium ions in a solution, and then the precursor precipitation powder is calcined in the hydrogen atmosphere to obtain the high-dispersion spherical iridium powder with the particle size smaller than 1 micron. The technology is novel, the preparation method is low in energy consumption, environmentally friendly and simple in process, large-scale preparation of the high-dispersion spherical iridium powder with the particle size smaller than 1 mic