1. H. Ritchie, M. Roser, Our World in Data, “Fossil Fuels”, http://ourworldindata.org/fossil-fuels.
2. United Nations, Conference of Parties Report, available at http://unfccc.int.
3. Biennial Update Report submissions from Non-Annex I Parties. Available online: https://unfccc.int/BURs (accessed on 30 July 2021).
4. Hydrogen storage materials for hydrogen and energy carriers;Kojima;Int. J. Hydrogen Energy,2019
5. The role of hydrogen and fuel cells in the global energy system;Staffell;Energy Environ. Sci.,2019