Their research indicated that the combination of multi-walled carbon nanotubes and the highly robust tetraruthenate cluster of POM (M10[Ru4(H2O)4(μ-O)4(μ-OH)2 (γ -SiW10O36)2] (M=Cs, Li)) resulted in the enhanced oxygen evolving catalytic performance with a remarkably improved efficiency, operative voltage, current density and operational stability.