Recent Advances in Electrospun 1D Nanofiber Catalysts for Electrochemical Water Oxidation: A Review

Electrospinning has become a flexible and scalableprocessing method of creating one‐dimensional (1D) nanostructures with tunable dimensions and high porosity, along with the improvement of charge‐transport properties. These characteristics make electrospun fibers competitive candidates for oxygen evolution reaction (OER) electrocatalysis which has slow reaction kinetics. This review offers a complete discussion on the fundamentals of electrospinning, the structural tunability of electrospun nanofibers, and the emerging use of 1D electrospun fibers in water oxidation reactions. We focus on metal‐based oxides, hydroxides, perovskites, layered double hydroxides, phosphides, sulfides, and the latest use of multicomponent and heterostructured systems that are engineered in 1D fibrous structures. Besides, we highlight the designing strategies, including core–shell fibers, hollow and porous forms, coaxial and layered structures, or heterostructured engineered nanofibers that improve active‐site availability and stability. We conclude our review discussing the current limitations and future opportunities toward the rational development of the next‐generation 1D electrospun electrocatalysts for OER in a manner that is effective, scalable, and sustainable.