Hydrogen fuel

https://www.wikidata.org/wiki/Q11549077

Field Hierarchy

Parent
Physics 31.7M papers	Chemistry 28.4M papers	Engineering 23.9M papers	Quantum mechanics 13.1M papers
Organic chemistry 12.8M papers	Chemical engineering 3.1M papers	Hydrogen 392k papers	Fuel cells 54k papers
Current
Hydrogen fuel 14.3k papers
Child
Hydrogen economy 4,622 papers	Hydrogen vehicle 2,899 papers	Hydrogen technologies 1,966 papers	Regenerative fuel cell 627 papers
Unitized regenerative fuel cell 453 papers

Trends

Notes

History