In LiFePO4, machine-learned simulations show polaron (Fe2+/Fe3+) flips are orders of magnitude faster than Li-ion hops and are enhanced at Li-rich/Li-poor phase boundaries.
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Uncovering coupled ionic-polaronic dynamics and interfacial enhancement in Li$_x$FePO$_4$
In LiFePO4, machine-learned simulations show polaron (Fe2+/Fe3+) flips are orders of magnitude faster than Li-ion hops and are enhanced at Li-rich/Li-poor phase boundaries.