NiFe Layered Double Hydroxides as High-Performance Electrocatalysts for Oxygen Evolution Reaction: Recent Developments

Abstract

Oxygen evolution reaction (OER) plays a pivotal role in advancing energy conversion and storage technologies, yet its widespread application is hindered by sluggish kinetics and high overpotential requirements. Although noble metal-based electrocatalysts remain benchmark materials for OER applications, their scarcity and thus corresponding high cost drive the exploration of cost-effective alternatives. Notably, NiFe-layered double hydroxide (LDH)-based materials have emerged as promising electrocatalysts in alkaline media, achieving remarkably performance for scalable applications. This review systematically outlines recent 2-year progresses in NiFe-LDH electrocatalysts for OER. First, fundamental OER mechanisms are elucidated to establish a theoretical framework as principles for chemical and structural design of NiFe-LDH. Subsequently, diverse novel tunning forms of NiFe-LDH materials including alloys, oxides/hydroxides, and their derivatives are critically analysed in terms of their catalytic activity and stability. Key synthesis approaches, including hydrothermal, electrodeposition, exfoliation etc. are also evaluated to highlight their impact on electrocatalysts properties. Finally, existing challenges and future directions are discussed, emphasizing strategies to further improve catalytic efficiency, durability, and practical applicability. By integrating mechanistic insights, material innovations, and synthetic advancements, this review aims to guide the rational design of next-generation NiFe-LDH catalysts and inspire their broader utilization in sustainable energy systems.