The encapsulant layer is formed from {HEAD ~ a material} which, upon oxidation during processing or during charging of the electrode, is convertible to {TAIL ~ an electrically conductive form}, and which, upon discharge of the electrode, does not revert to its previous form 
is convertible to
The encapsulant layer is formed from { HEAD ~ a material } which , upon oxidation during processing or during charging of the electrode , is convertible to { TAIL ~ an electrically conductive form } , and which , upon discharge of the electrode , does not revert to its previous form
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH