Altering electronic structure of nickel foam supported CoNi-based oxide through Al ions modulation for efficient oxygen evolution reaction.

Developing highly active and durable non-precious metal-based electrocatalysts for the oxygen evolution reaction (OER) is crucial in achieving efficient energy conversion. Herein, we reported a CoNiAlO/NF nanofilament that exhibits higher OER activity than previously reported IrO-based catalysts in alkaline solution. The as-synthesized CoNiAlO/NF catalyst demonstrates a low overpotential of 230 mV at a current density of 100 mA cm, indicating its high catalytic efficiency.