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Dresden 2017 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 61: Charged Soft Matter, Ionic Liquids and Polyions II

CPP 61.6: Vortrag

Donnerstag, 23. März 2017, 16:15–16:30, ZEU 114

Conductivity Enhancement in Plastic Crystals — •Daniel Reuter, Korbinian Geirhos, Peter Lunkenheimer, and Alois Loidl — Experimental Physics V, University of Augsburg, Germany

Solid-state electrolytes for usage in lithium-ion batteries offer various advantages compared to their liquid counterparts. These are, e.g., design flexibility and higher safety [1]. Plastic crystals (PC) are promising candidates for such solid-state electrolytes. The molecules in a PC are ordered on a regular crystalline lattice while still exhibiting rotational motion. This rotational motion is believed to support ionic mobility in these materials. Interestingly, the ionic conductivity of the PC succinonitrile can be strongly enhanced by doping with ions [2] and admixing molecules [3]. This conductivity enhancement strongly depends on type of dopant and admixed molecule, which opens up a new research field on PCs. In this contribution, we provide dielectric and conductivity data for various mixed plastic-crystalline systems with ion addition.
J. Motavalli, Nature 526, 96 (2015). [2] P. Alarco et al., Nature 3, 476 (2004). [3] K. Geirhos et al., J. Chem. Phys. 143, 081101 (2015).

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