i happened to watch yet another episode of sabine last night and this time she spoke about hydrogen as a substance for storing energy. She pointed out problems with producing hydrogen. she referred to many articles. Some of these articles i collected in Nextcloud. Then, i could not access it fully. Then, there is the article on shutting down hydrogen buses in Germany, and the one on using platinum. These seem to be good sources for your tasks. Please look at them and if you find them applicable use them for your functions in connection to SDGs 7, 12, 13, and maybe others.