Enhancing Electrocatalytic Activity Through Targeted Local Electrolyte Micro‐Environment

Abstract The local electrolyte micro‐environment surrounding the catalyst reaction center, including critical factors such as pH, reactant concentration, and electric field, plays a decisive role in electrocatalytic reactions such as water splitting. Recently, this topic has garnered significant attention due to its potential to significantly enhance catalytic performance. While various strategies to optimize electrocatalytic processes have been explored, deliberate control over the micro‐environment and the fundamental principles guiding these local adjustments remain in their early stages of development. This review provides a comprehensive examination of key efforts aimed at designing and tailoring localized micro‐environments to improve electrocatalytic performance. It discusses advances in micro‐environmental design, methodologies for evaluating micro‐environmental shifts, and the mechanistic insights driving these developments. Additionally, this review highlights existing challenges and prospective industrial applications of localized micro‐environment strategies. By offering a detailed analysis of recent developments, this review aims to equip researchers with practical knowledge on controlling micro‐environments, thereby accelerating progress toward practical real‐world applications in electrocatalytic processes.