A Review on Cu‐Based Catalysts for Dehydrogenation of Chemical Hydrides

ABSTRACT Hydrogen (H 2 ) plays a crucial part in the building of clean and sustainable energy systems due to its advantages of being renewable, clean, and pollution‐free. Nevertheless, the secure and effective production‐storage‐transportation of H 2 presents critical challenges. Carbon‐based (e.g., HCOOH), boron‐based (e.g., NaBH 4 , NH 3 BH 3 , and N 2 H 4 BH 3 ), and nitrogen‐based (e.g., N 2 H 4 ·H 2 O and NH 3 ) chemical hydrides are considered to be prospective chemical hydrogen storage materials that effectively avoid the problems of storage and transportation of H 2 . The exploration of advanced catalysts with specific selectivity, satisfactory activity, and excellent chemical stability is essential for H 2 production from the abovementioned chemical hydrides. Cu‐based catalysts are broadly applied in the dehydrogenation of chemical hydrides for H 2 production owing to their properties of cost‐effectiveness, unique filled electronic configuration, and appropriate surface adsorption energy. Here, we review and highlight advanced Cu‐based heterogeneous catalysts (e.g., monometallic, bimetallic, and multimetallic catalysts, single‐atom catalysts, and photocatalysts) for efficient H 2 production from the dehydrogenation of carbon‐based, boron‐based, and nitrogen‐based chemical hydrides. Finally, primary challenges and future prospects of Cu‐based heterogeneous catalysts for efficient H 2 production from the dehydrogenation of chemical hydrides are also discussed.