About: http://webisa.webdatacommons.org/256991046

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In comparison with other types of fuel cells, PEFCs have a high power density, low weight to power ratio, and utilize a proton exchange membrane (PEM) as its electrolyte.
http://www.w3.org/ns/prov#wasQuotedFrom	energy.gov