With the discovery of graphene, 2D materials have emerged as some of the most promising candidates for heterogeneous electrocatalysts owing to their unique physicochemical and electronic properties. This research and reference text covers the latest advances in the area of 2D material-based electrocatalysts for electrocatalytic processes, including the key principles, pros and cons, synthesis, tuning, performance, challenges, and future opportunities. Intended for researchers and graduate students, this will be the first book on 2D materials as electrocatalysts and will enable readers to understand the mechanisms behind the electrolysis and synthesis of 2D electrocatalysts. It will also be beneficial for industry experts working with the HER, ORR, and CO2 reduction processes for large-scale usage.