Hydrophilic NiFe-LDH/Ti3C2Tx/NF electrode for assisting efficiently oxygen evolution reaction

Electrolytic water splitting, consists of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), still has many challenges because of the high cost and scarity of the indispensable noble metal catalysts. Herein, the costless and effective NiFe layered double hydroxide (NiFe-LDH), supported on the Ti3C2Tx modified 3D nickel foam (NF), is used instead of noble metal to intensify the transfer ability of the charges as well as ions in the OER catalysis process. The prepared NiFe-LDH/Ti3C2Tx/NF electrode has a lower overpotential (240 ​mV ​at 50 ​mA ​cm−2) and Tafel slope (82 ​mV dec−1) as compared with that of IrO2/Ti3C2Tx/NF(400 ​mV, 252 ​mV dec−1). Meanwhile, it has a good endurance and stability with a negligible voltage changing after 15 ​h of testing. The work provides reference for the synthetic of catalyst with high catalytic kinetics and activity in the field of electrolytic water splitting.