LAUSR

Abstract A tetraruthenium-containing polyoxometalate has been immobilized on the commercial nickel foam electrode by a facile method and the electrocatalytic oxygen evolution activity has been investigated. The molecular structure of the polyoxoanion does not change after loading on the nickel foam. Benefiting from the high specific surface area and high electronic conductivity of nickel foam, this material exhibits excellent electrocatalytic activity for oxygen evolution reaction with low overpotential (550 mV at 10 mA cm−2), a Tafel slope of 172 mV dec−1 and excellent stability in sodium phosphate buffer (200 mM, pH 6). Our finding introduces a new way for developing the polyoxometalate-based electrocatalysts for water oxidation.