A rechargeable battery cell includes an anode with a major portion of active material, a cathode including MnO2 doped with bismuth, and a separator between the cathode and anode which substantially prevents bismuth from migrating from {TAIL ~ the cathode} to {HEAD ~ the anode} 
A rechargeable battery cell includes an anode with a major portion of active material , a cathode including MnO2 doped with bismuth , and a separator between the cathode and anode which substantially prevents bismuth from migrating from { TAIL ~ the cathode } to { HEAD ~ the anode }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD