Assertion: hydrogen's proton | /r/CapableOf | pass through a proton exchange membrane
Facets:
value: directly
type: MANNER
Source sentences:
text: The protons pass directly through a proton exchange membrane (PEM), while electrons are forced through an external circuit, causing electric current to flow.
text: The membrane allows only protons to pass through and is called a proton exchange membrane, or PEM.