Interfacial engineering of Mo-doped Ni 3 S 2 /FeNi 2 S 4 heterostructures for durable industrial level-current-density AEM water electrolysis

Mo-doped Ni 3 S 2 /FeNi 2 S 4 nanosheet catalyst delivers exceptional OER activity, reaching 3 and 5 A cm −2 at 1.98 and 2.18 V in AEMWE with 200 h stability. Mo-induced charge modulation enhances active sites, enabling efficient hydrogen production.