Publication date: 26th March 2026
Green hydrogen is a promising energy vector for many reasons. However, significant challenges remain, particularly regarding its production and practical storage. This contribution focuses on hydrogen storage using Liquid Organic Hydrogen Carriers (LOHCs) as a potential and competitive technology.[1] However, since hydrogen must be reversibly bound into chemical carriers and subsequently released through dehydrogenation, the necessary conversion and reconversion steps inevitably increase the overall hydrogen cost, thereby constraining the industrial appeal of LOHC-based systems. To address this challenge, we propose the development of an integrated long-term energy storage system based on hydrogen derived from biomass through simultaneous electrocatalytic transformations. This strategy enables the direct transfer of hydrogen from biomass to LOHC molecules without the intermediate production of hydrogen gas, while concurrently generating value-added chemical products. In this work, we review the current state of the art in LOHC technologies [2] [3] and our approach for improving the efficiency of hydrogen storage in the liquid form: https://pecaths.eu/
DOI: 10.1021/acs.accounts.6b00474 - Citation: Preuster, P., Papp, C., & Wasserscheid, P. (2017). Liquid Organic Hydrogen Carriers (LOHCs): Toward a Hydrogen-free Hydrogen Economy. Accounts of Chemical Research, 50(1), 74–85.
DOI: 10.1021/acssuschemeng.5c02168 - Citation: Solera-Rojas, J., Forés, C., Beltrán-Gargallo, G., Fabregat-Santiago, F., Mata, J. A., Mejuto, C., & Mas-Marzá, E. (2025). Electrohydrogenation of Benzonitrile into Benzylamine under Mild Aqueous Conditions. ACS Sustainable Chemistry & Engineering, 13(23), 8660–8670.
DOI: doi.org/10.1039/D4GC01275E - Citation: Guenani, N., Solera-Rojas, J., Carvajal, D., Mejuto, C., Mollar-Cuni, A., Guerrero, A., Fabregat-Santiago, F., Mata, J. A., & Mas-Marzá, E. (2024). Room temperature hydrogen production via electro-dehydrogenation of amines into nitriles: advancements in liquid organic hydrogen carriers. Green Chemistry, 26(15), 8768–8776
The authors thank the financial support from the European Commission Horizon Europe Programme under GA No. 101191948 (PECATHS) and MICIU/AEI/FEDER/FSE (PID2024-161125OB-I00
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