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