UDK 544.6:621.35 Investigating MXene Material For Evolution Reaction in Water Splitting

Аннотация

We report a MXene-based hierarchical electrode architecture specifically engineered to address these challenges for alkaline OER. A Ti₃C₂Tₓ MXene/Nickel Foam (MXene/NF) electrode is fabricated via a simple immersion strategy, enabling intimate interfacial coupling between highly conductive MXene nanosheets and a three-dimensional porous nickel scaffold. This architecture achieves an OER overpotential of 360 mV at 10 mA cm⁻² and exhibits stable operation at 100 mA cm⁻², indicating efficient charge-transfer kinetics and mechanical robustness. To further mitigate MXene restacking and enhance mass transport, graphene oxide (GO) is incorporated as structural spacers and conductive bridges, yielding a MXene@GO composite with a reduced OER overpotential of 290 mV and improved thermodynamic efficiency. Electrochemical analyses reveal a significantly increased electrochemically active surface area and sustained catalytic performance during prolonged operation. This work demonstrates that hierarchical engineering of MXene-based composites provides an effective and scalable strategy for high-performance OER electrocatalysis in alkaline water-splitting systems.