Fuel cells

https://www.wikidata.org/wiki/Q180253

Field Hierarchy

Parent
Engineering 25M papers		Chemical engineering 3M papers
Current
Fuel cells 54k papers
Child
Proton exchange membrane fuel cell 38.8k papers	Hydrogen fuel 13.1k papers	Gaseous diffusion 7,147 papers	Methanol fuel 4,650 papers
Hydrogen economy 4,261 papers	Hydrogen vehicle 2,637 papers	Direct-ethanol fuel cell 2,155 papers	Hydrogen fuel enhancement 2,113 papers
Hydrogen technologies 1,761 papers		Regenerative fuel cell 608 papers

Trends

Notes

History