Electrode kinetics in polymer electrolyte solid‐state cells

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Abstract
The kinetics of lithium metal and of selected intercalation electrodes in electrochemical cells using poly(ethylene oxide)‐based electrolytes are discussed on the basis of cyclic voltammetry, polarisation curves and frequency response analysis. The results indicate that the lithium electrode, even if inherently reversible, may be passivated by the polymer electrolytes with the growth of a resistive layer at the interface. Among the most common intercalation compounds the Li1+xV3O8 bronze shows reversible behaviour and appears to be a very promising positive electrode in rechargeable lithium/polymer electrolyte batteries.