About: http://webisa.webdatacommons.org/139017493

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	Specifically, for the cathode, a material with a low work function, such as Ca, Al, CaF, MgAg, or AlLi can be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com