In situelectrochemical observation of anisotropic lattice contraction of La0.6Sr0.4FeO3−δelectrodes during pulsed laser deposition

Riedl, Christoph; Siebenhofer, Matthäus; Ražnjević, Sergej; Bumberger, Andreas E.; Zhang, Zaoli; Limbeck, Andreas; Opitz, Alexander Karl; Kubicek, Markus; Fleig, Jürgen

doi:10.1039/d2cp04977e

Phys. Chem. Chem. Phys.

2023

DOI: 10.1039/d2cp04977e

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In situelectrochemical observation of anisotropic lattice contraction of La_0.6Sr_0.4FeO_3−δelectrodes during pulsed laser deposition

Christoph Riedl

Matthäus Siebenhofer

Sergej Ražnjević

et al.

Abstract: La0.6Sr0.4FeO3-δ (LSF) electrodes were grown on different electrolyte substrates by pulsed laser deposition (PLD) and their oxygen exchange reaction (OER) resistance was tracked in real-time by in-situ PLD impedance spectroscopy...

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2024

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Cited by 2 publications

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Iono‐Optic Impedance Spectroscopy (I‐OIS): A Model‐Less Technique for In Situ Electrochemical Characterization of Mixed Ionic Electronic Conductors

Nizet,

Chiabrera,

Tang

et al. 2024

Small Methods

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Functional properties of mixed ionic electronic conductors (MIECs) can be radically modified by (de)insertion of mobile charged defects. A complete control of this dynamic behavior has multiple applications in a myriad of fields including advanced computing, data processing, sensing or energy conversion. However, the effect of different MIEC's state‐of‐charge is not fully understood yet and there is a lack of strategies for fully controlling the defect content in a material. In this work we present a model‐less technique to characterize ionic defect concentration and ionic insertion kinetics in MIEC materials: Iono‐Optic Impedance Spectroscopy (I‐OIS). The proof of concept and advantages of I‐OIS are demonstrated by studying the oxygen (de)insertion in thin films of hole‐doped perovskite oxides. Ion migration into/out of the studied materials is achieved by the application of an electrochemical potential, achieving stable and reversible modification of its optical properties. By tracking the dynamic variation of optical properties depending on the gating conditions, I‐OIS enables to extract electrochemical parameters involved in the electrochromic process. The results demonstrate the capability of the technique to effectively characterize the kinetics of single‐ and even multi‐layer systems. The technique can be employed for studying underlying mechanisms of the response characteristics of MIEC‐based devices.

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Iono‐Optic Impedance Spectroscopy (I‐OIS): A Model‐Less Technique for In Situ Electrochemical Characterization of Mixed Ionic Electronic Conductors

Nizet,

Chiabrera,

Tang

et al. 2024

Small Methods

View full text Add to dashboard Cite

show abstract

Suppression of structural distortion in Vanadium-doped nickel MOFs for enhanced stability and activity in oxygen evolution reactions

Liu,

Li,

Song

et al. 2024

International Journal of Hydrogen Energy

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In situelectrochemical observation of anisotropic lattice contraction of La_0.6Sr_0.4FeO_3−δelectrodes during pulsed laser deposition

Abstract: La0.6Sr0.4FeO3-δ (LSF) electrodes were grown on different electrolyte substrates by pulsed laser deposition (PLD) and their oxygen exchange reaction (OER) resistance was tracked in real-time by in-situ PLD impedance spectroscopy...

Cited by 2 publications

References 70 publications

Iono‐Optic Impedance Spectroscopy (I‐OIS): A Model‐Less Technique for In Situ Electrochemical Characterization of Mixed Ionic Electronic Conductors

Iono‐Optic Impedance Spectroscopy (I‐OIS): A Model‐Less Technique for In Situ Electrochemical Characterization of Mixed Ionic Electronic Conductors

Suppression of structural distortion in Vanadium-doped nickel MOFs for enhanced stability and activity in oxygen evolution reactions

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