| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Friedrich, K. Andreas
German Aerospace Center
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Carbonate swollen lithiated Nafion electrolyte for quasi-solid-state lithium–sulfur batteriescitations
- 2022Identification of the Underlying Processes in Impedance Response of Sulfur/Carbon Composite Cathodes at Different SOCcitations
- 2022A high-performance, durable and low-cost proton exchange membrane electrolyser with stainless steel componentscitations
- 2022Identification of the underlying processes in impedance response of sulfur/carbon composite cathodes at different SOC
- 2018High-resolution analysis of ionomer loss in catalytic layers after operation
- 2017Improving the activity and stability of Ir catalysts for PEM electrolyzer anodes by SnO 2 :Sb aerogel supports: does V addition play an active role in electrocatalysis?citations
- 2016Analysis of the influence of temperature and gas humidity on the performance stability of polymer electrolyte membrane fuel cellscitations
- 2014Low Cost Bipolar Plates for Large Scale PEM Electrolyzerscitations
- 2014Model-based prediction of the ohmic resistance of metallic interconnects from oxide scale growth based on scanning electron microscopycitations
Places of action
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article
Identification of the Underlying Processes in Impedance Response of Sulfur/Carbon Composite Cathodes at Different SOC
Abstract
<jats:p>For lithium-sulfur batteries, porous carbon/sulfur composite cathodes are the primary solution to compensate the non-conductive nature of sulfur. The composition and structure of this class of cathodes are crucial to the electrochemical performance, achieved energy density and the stability of the cell. Electrochemical impedance spectroscopy is employed to investigate and correlate the electrochemical performance of lithium-sulfur batteries to the composition and microstructure of differently fabricated carbon/sulfur composite cathodes. A transmission line model is applied to identify different underlying electrochemical processes appearing in the impedance response of a range of porous carbon/sulfur cathodes. The integration of a lithium ring serving as a counter electrode coupled with advanced wiring has allowed an artifact-free recording of the cathode impedance at different states of charge with the aim to investigate the evolution of impedance during discharge/charge and the kinetics of charge transfer depending on the infiltration method and the utilized carbon host. It is shown that impedance response of this class of cathodes is highly diverse and the plausible underlying processes are discussed in details. To this end, quasi-solid-state and various polysulfide-based charge transfer mechanisms are identified and their time constants are reported.</jats:p>