Ta-doped NiFe layered double hydroxide for efficient alkaline water oxidation at ampere-level current with 2000 h durability

for over 2000 hours, demonstrating exceptional durability under industrially relevant conditions. Complementary DFT+U calculations reveal that Ta doping induces an upshift of the d-band center at the active sites, thereby contributing to the optimized OER intermediate adsorption. This electronic modulation is identified as the key factor underlying the observed catalytic enhancement. This work highlights the effectiveness of high-valence ion doping for tuning LDH-based electrocatalysts toward practical water electrolysis applications.