In this context, individual conductivity contributions of cations (σ+), anions (σ-) and ion pairs (s) can be determined by engaging the concept of conservative ensembles and three experimental techniques (AC conductivity for σAC, DC polarization for σpol and PFG-NMR for s*):
where s* is retrieved through tracer diffusion coefficient
Lithium triflate containing polyethylene glycol electrolyte solutions are currently investigated. The analysis can be extended to other electrolyte systems, including ionic liquids.
Publications:
J. Maier, Adv. Funct. Mater. , 2011, 21, 1448. DOI: 10.1002/adfm.201002153
C. Pfaffenhuber, J. Popovic, J. Maier, in preparation