Relevant bibliographies by topics / Spatially and temporally resolved electrochemical impedance spectroscopy

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Spatially and temporally resolved electrochemical impedance spectroscopy'

Author: Grafiati
Published: 8 June 2024
Last updated: 31 July 2025

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Journal articles on the topic "Spatially and temporally resolved electrochemical impedance spectroscopy"

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Gerteisen, D., W. Mérida, T. Kurz, P. Lupotto, M. Schwager, and C. Hebling. "Spatially Resolved Voltage, Current and Electrochemical Impedance Spectroscopy Measurements." Fuel Cells 11, no. 2 (2011): 339–49. http://dx.doi.org/10.1002/fuce.201000181.

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Oppek, Philipp, Mischa Geörg, Tobias Goosmann, Tatyana V. Reshetenko, Andre Weber, and Ulrike Krewer. "Spatially Resolved Deconvolution of Loss Processes in PEM Fuel Cells." ECS Meeting Abstracts MA2022-01, no. 35 (2022): 1439. http://dx.doi.org/10.1149/ma2022-01351439mtgabs.

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The complex operating behaviour of PEM Fuel Cells is heavily influenced by different non-linear loss processes, which limit the cell performance. Depending on the operating conditions, the different losses change in magnitude and characteristic time constants [1]. During technical operation of large-sized PEM Fuel Cells, gradients in operating conditions occur along the gas channels, resulting in an inhomogeneous current density distribution. This is caused by the locally varying electrochemical activity due to in-plane gradients in concentrations of reactants and reaction products, gas pressu
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Curnick, Oliver, Mehran Afra, Alexander Thirkell, et al. "Spatially-Resolved Characterisation of Large-Format PEMFC Electrodes: Electrochemical Impedance, ECSA and O2 Concentration." ECS Meeting Abstracts MA2024-02, no. 44 (2024): 3064. https://doi.org/10.1149/ma2024-02443064mtgabs.

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Fuel cell stacks are growing: both in numbers deployed in the field but also in terms of active electrode areas. The pursuit of higher-power applications and power densities means that cell active areas upwards of 400cm² are now commonplace. With larger electrodes comes an increased risk of non-uniform distributions of current density, temperature and reactant concentrations, which may lead in turn to locally-accelerated degradation and premature failure. Whilst detailed CFD/FEA modelling and simulation can help to refine designs, direct observations via in-situ and in-operando measurements ar
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Papac, Meagan C., Kevin R. Talley, Ryan O’Hayre, and Andriy Zakutayev. "Instrument for spatially resolved, temperature-dependent electrochemical impedance spectroscopy of thin films under locally controlled atmosphere." Review of Scientific Instruments 92, no. 6 (2021): 065105. http://dx.doi.org/10.1063/5.0024875.

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Hink, Steffen, and Emil Roduner. "Application of a contact mode AFM for spatially resolved electrochemical impedance spectroscopy measurements of a Nafion membrane electrode assembly." Phys. Chem. Chem. Phys. 15, no. 5 (2013): 1408–16. http://dx.doi.org/10.1039/c2cp42843a.

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Schiller, Günter, Erich Gülzow, Mathias Schulze, Norbert Wagner, and K. Andreas Friedrich. "Analytical Investigation of Fuel Cells by Using In Situ and Ex Situ Diagnostic Methods." Materials Science Forum 638-642 (January 2010): 1125–30. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.1125.

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The study of the behaviour of fuel cells by using various in-situ and ex-situ diagnostic methods is a main topic at the German Aerospace Center (DLR). The degradation of cell components of polymer electrolyte fuel cells (PEFC, DMFC) and of solid oxide fuel cells (SOFC) are of special interest. For this purpose physical and electrochemical methods are used individually as well as in combination. In addition to routinely applied electrochemical methods different methods for locally resolved current density measurements by means of segmented cell technology and integrated temperature sensors have
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Tok, Guelen Ceren, Leonhard Reinschlüssel, Anne Berger, and Hubert Andreas Gasteiger. "Spatially Resolved Operando X-Ray Absorption Spectroscopy in NCA/Graphite to Quantify the Potential-Dependent Transition Metal Dissolution and Its Effect on Capacity Fading." ECS Meeting Abstracts MA2022-01, no. 2 (2022): 172. http://dx.doi.org/10.1149/ma2022-012172mtgabs.

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Layered transition metal oxides like NCAs (LiNixCoyAlzO2, with x+y+z=1) and NCMs (LiNixCoyMnzO2, with x+y+z=1) are used as cathode active materials (CAMs) for high energy Li-ion batteries due to their high capacity. However, at high upper cut-off potentials, those CAMs suffer from structural instabilities, resulting in severe capacity fading and thus limiting the accessible capacity that can be obtained. Possible causes for the capacity fade at high cut-off potentials and high state-of-charge (SOC) include the (electro)chemical oxidation of the electrolyte oxidation and transition metal (TM) d
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8

Goosmann, Tobias, Philipp Oppek, and Andre Weber. "Method for Systematic Validation of a Physically Based PEMFC Model By Spatially Resolved Impedance Measurements." ECS Meeting Abstracts MA2023-02, no. 38 (2023): 1837. http://dx.doi.org/10.1149/ma2023-02381837mtgabs.

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Loss mechanisms in PEM Fuel Cells related to charge transfer reactions or diffusive gas transport result in a strongly nonlinear performance, which is furthermore affected by operating conditions as temperature, relative humidity of the gases and stoichiometries. These dependencies have to be considered and validated in fuel cell models to ensure accuracy. Thus, the interpretation of the simulated results becomes more reliable. Direct comparison of simulated and measured current/voltage-relation only allows to evaluate deviations in resulting cell voltages but exclude internal state variables
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Oswald, Stefan, Alice J. Merryweather, Christoph Schnedermann, Akshay Rao, and Clare P. Grey. "Operando Optical Monitoring of the Dynamics and Inhomogeneity of the Electrical Double Layer on Single Particles." ECS Meeting Abstracts MA2025-01, no. 1 (2025): 78. https://doi.org/10.1149/ma2025-01178mtgabs.

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The electrical double layer (EDL) forms at the electrified interface of a solid electrode immersed into a liquid electrolyte and is composed of electronic charge carriers, solvated ions, and solvent molecules [1]. Its properties govern the mass and charge transfer through the interface itself, thus critical to the operation of any electrochemical system. However, a full description for these systems is still lacking since the direct characterization of the EDL is extremely challenging, mostly due to its nanoscopic scale and high rearrangement rates. Here, we present a novel laboratory-based op
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Schüttoff, Miriam, Christian Wachtel, Florian Wilhelm, Joachim Scholta, and Markus Hölzle. "Improved Understanding of PEMFC Stack Durability Testing through Comprehensive In-Situ and Ex-Situ Characterization Techniques." ECS Transactions 114, no. 5 (2024): 655–69. http://dx.doi.org/10.1149/11405.0655ecst.

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Durability testing of Proton Exchange Membrane Fuel Cells for mobile applications remains a critical challenge. While most academic studies focus on single-cell testing, there are only few publications on stack testing of technical relevant sizes. This study utilizes comprehensive characterization techniques to enhance understanding of PEMFC stack durability, aiming to meet the currently targeted durability targets. A 5,500-hour long-term test, based on the Auto Stack Industry (ASI) test protocol, was performed on a 7-cell short stack of 240 cm² active area. In-situ techniques, such as spatial
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Dissertations / Theses on the topic "Spatially and temporally resolved electrochemical impedance spectroscopy"

1

Schmitt, Tobias. "Method development and experimental investigation of dynamic water distribution in a segmented PEMFC." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0021.

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La pile à combustible à membrane échangeuse de protons (PEMFC) est une technologie prometteuse, de plus en plus supérieure au moteur à combustion interne, en tant que groupe motopropulseur électrique pour l'application automobile. Au cours des dernières années, la déconvolution des processus internes a été étudiée de manière intensive, ce qui a permis d'améliorer les performances et la durée de vie tout en réduisant les coûts. Pourtant, de nombreux mécanismes sous-jacents ne sont pas encore totalement compris, car les méthodes expérimentales sont en partie limitées. La distribution d'eau dans
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