Assertion: fuel cell's electrolyte | /r/HasProperty | substance
Facets:
Source sentences:
text: The electrolyte is a substance specifically designed so ions can pass through it, but the electrons cannot.
text: The electrolyte is the substance that hydrogen protons freely pass through as they move between electrodes.
text: The electrolyte is a substance that is specifically designed so that ions can pass through it but electrons cannot.