【134】 Electrode swelling during ion electrosorption in carbon based supercapacitors

25 Aug 2017, 12:00
15m
Talk Condensed Matter Physics (incl. NESY) Condensed Matter Physics (incl. NESY)

Speaker

Christian Koczwara (Institute of Physics, Montanuniversitaet Leoben)

Description

In situ small angle X-ray scattering (SAXS) is a suitable technique to analyze global ion fluxes and local ion re-arrangement in nanoporous carbon-based supercapacitor electrodes upon charging and discharging.[1,2] Recently, we have extended our studies to include volumetric changes of the electrodes during operation. Therefore, a novel hierarchical carbon material with ordered mesoporosity and tunable disordered microporosity was synthesized. This system provides the unique possibility to track electrode expansion and compression on the nanometer and the macroscopic scale by combining in situ SAXS and electrochemical dilatometry.[3]

1 C. Prehal, et al. Energy Environ. Sci.,2015,8,1725-1735

2 C. Prehal, et al. Nat. Energy, 2017,2,16215

3 C. Koczwara et al. 2017 submitted

Primary authors

Christian Koczwara (Institute of Physics, Montanuniversitaet Leoben) Christian Prehal (Institute of Physics, Montanuniversitaet Leoben) Simon Rumswinkel (Paris Lodron University Salzburg, Materials Chemistry) Nicolas Jäckel (INM - Leibniz Institute for New Materials) Michael S. Elsässer (Paris Lodron University Salzburg, Materials Chemistry) Heinz Amenitsch (Institute of Inorganic Chemistry, Graz University of Technology) Nicola Hüsing (Paris Lodron University Salzburg, Materials Chemistry) Volker Presser (INM - Leibniz Institute for New Materials) Oskar Paris (Institute of Physics, Montanuniversitaet Leoben)

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