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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 14: Materials for Energy Storage I (joint session KFM/CPP)
KFM 14.1: Invited Talk
Wednesday, March 14, 2018, 09:30–10:00, EMH 025
Resource-efficient dielectric materials for short-time energy storage — •Stephan Krohns — Experimental Physics V, University of Augsburg, 86159 Augsburg
Materials exhibiting so-called colossal effects have an enormous potential for future use in correlated electronics, including capacitors for energy storage. The search for functional dielectrics showing colossal dielectric constants (CDC) is still an active field of research [1].
Beside the pure materials properties, also the scarcity and possible future shortages of used key elements in this modern technology is in the focus of scientific interest. An imminent challenge of modern materials science is the development of materials with less critical elements that have comparable or better functionalities than those currently used.
In this talk, I address the pure materials science perspective focusing on the research of CDC materials like crystals showing barrier layer capacitances [2] as well as ionic liquids. The latter are promising candidates for electrolytes used in supercapacitors [3]. Furthermore, I present a practical guideline for basic research implementing resource strategy aspects [4] as well as a possible scenario for the system and market integration of those short-term energy storages [5].
[1] S. Krohns et al., Nat. Mat. 10, 899 (2011).
[2] E. Ruff et al., Phys. Rev. Lett. 118, 036803 (2017).
[3] P. Sippel et al., Sci. Rep. 5, 13922 (2015).
[4] Ch. Helbig et al., Sust. Mat. & Techn. 12, 1 (2017).
[5] M. Hassler et al., OR Spectrum 38, 633 (2016).