Bimetallic and phosphorus-decorated cobalt molybdate nanosheets as highly active bifunctional electrocatalysts for enhanced overall water splitting

It is very vital to exploit efficient electrocatalysts for water splitting. Herein, we design and fabricate one kind of bimetallic and phosphorus-doped CoMoO4 (P-CoMoO4) nanosheet product with coarse surface and porous structure. The P-CoMoO4 nanosheets possess rectangular architecture with the length and width of similar to 2 mu m and 500 nm. It is worth noting that the synthetic P-CoMoO4 catalyst displays bifunctional activity for overall water splitting in alkaline electrolyte. The overpotentials are merely 300 and 70.2 mV for OER and HER at 10 mA cm(-2), respectively. The water splitting voltage of P-CoMoO4 couple is 1.48 V at 10 mA cm(-2), and this couple presents reliably long-term stability for 24 h. This research indicates the important significance of bimetallic and phosphorus-decorated oxides in water electrolysis field.