Metal-glycerolates and their derivatives as electrode materials: A review on recent developments, challenges, and future perspectives

•We review the contributions of metal glycerolate-based materials to obtain enhanced energy technologies.•We present and compare the main strategies to develop metal glycerolate-based electrode materials.•The main preparation methods in the design of metal glycerolate-based materials.•The top materials for the main target energy application (Supercapacitors, Batteries and Water-splitting).•Recent trends and perspectives on energy devices based on metal glycerolates.