Proton exchange membrane fuel cell

https://www.wikidata.org/wiki/Q899619

Field Hierarchy

Parent
Biology 36M papers	Chemistry 28.9M papers	Engineering 25M papers	Biochemistry 13.5M papers
Organic chemistry 12.9M papers	Genetics 9.8M papers	Catalysis 3M papers	Chemical engineering 3M papers
Membrane 959k papers		Fuel cells 54k papers
Current
Proton exchange membrane fuel cell 38.8k papers
Child
Direct-ethanol fuel cell 2,155 papers	Regenerative fuel cell 608 papers	Unitized regenerative fuel cell 441 papers

Trends

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History