High transference numbers in composite electrolytes

J. Popovic, G. Gregori

Salt containing liquid electrolytes show both cation and anion conductivity leading to concentration polarization effects, a severe problem in context of Li-based batteries. Such adverse effects can be circumvented through development of composite electrolytes in which porous insulating solid with favorable surface chemistry is covered by a thin layer of liquid electrolyte allowing for the overlap and percolation of highly Li+ conductive space charge zones.

Of particular interest are the galvanostatic DC polarization measurements of composite electrolytes (highly concentrated "soggy sand" electrolytes) performed in a specially designed cell under controlled atmosphere.


C. Pfaffenhuber, M. Göbel, J. Popovic, J. Maier, Phys. Chem. Chem. Phys., 2013, 15, 18318. DOI: 10.1039/C3CP53124D

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