What are research funding commitment from countries for green hydrogen which shows the importanceHow does it relate to net-zero by 2050

Introduction to green-hydrogen as a research topic, latest from COP26, world economic forum, UN SDG etc.
– Why we want to investigate this research topic, its relationship to with UN SDG 2030, specific SDGs like SDG 7, 13, 12
– What are research funding commitment from countries for green hydrogen which shows the importance
– How does it relate to net-zero by 2050
– Recent academic research on green-hydrogen, biohydrogen and related topics
– Cite similar bibliometric studies
– UN SDG’s were adopted in Jul 2015…so some reference before and after the state of research on green-hydrogen
– how in the last two years the research on green-hydrogen has picked up tremendously (COP26 reference)
– please use green-hydrogen consistently as a single term with hyphen