“…This journal is © The Royal Society of Chemistry 2024 integrating with carbon, designing the facile synthesis route, and utilization of waste enhanced the performance. 1g, [15][16]27,[29][30][31][32][33][34][35][36][37][38][39][40][41][42] (b) Fabricating hydroxide based noble metal-free electrocatalysts enhanced the performance for the HER and OER, while various strategies including preparing nanostructures, preparing transition bimetallic carbonate hydroxides, increasing the conductivity and electrochemical surface area, creating abundant oxygen vacancies, doping of metals, and developing facile synthesis routes at ambient temperature enhanced the performance. 17,26,[43][44][45][46][47][48] (c) Fabricating (oxy)hydroxide based noble metal-free electrocatalysts enhanced the performance for the HER and OER, while various strategies including creating abundant defects, generating multiple vacancies, doping of elements, developing NiFe based catalysts, and developing facile synthesis routes enhanced the performance.…”