Self-Assembled MoOx@Co2P4O12 as an Ideal Bifunctional Catalyst for Overall Water Splitting

This paper reports the preparation of a bifunctional catalyst MoOx@Co2P4O12. The precursor was formed on smooth nickel foam, and then the phosphorus source Na2H2PO4 was used to generate MoOx@Co2P4O12 at 300 °C. MoOx@Co2P4O12 has a three-dimensional lamellar structure. The as-prepared electrode materials have good performance in both HER and OER. In HER process, the as-obtained sample requires only an overpotential of 85.8 mV at 10 mA·cm−2, and the as-obtained sample requires an overpotential of 290 mV at 15 mA· cm−2 in OER. The assembled cell (1.61 V) can work stably at 15 mA·cm−2. And the electrolytic cell voltage increased only 6 mV after 30 h. These results prove that MoOx@Co2P4O12 is a potential bifunctional catalysts.