EIS Study of Doped High-Entropy Alloy

Brito-Garcia, Santiago Jose; Rosca, Julia Claudia Mirza; Jiménez-Marcos, Cristina; Voiculescu, Ionelia

doi:10.3390/met13050883

Cited by 5 publications

(1 citation statement)

References 44 publications

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“…This technique can also be used to study the kinetics and mechanisms of electrochemical reactions, species adsorption on electrode surfaces, and the behavior of complex electrochemical systems 18 . EIS is a valuable tool for characterizing and understanding electrochemical systems due to its non-invasive and non-destructive nature, providing information about their electrical and electrochemical properties 19,20 .…”

Section: Introductionmentioning

confidence: 99%

Electrical Properties Analysis of Dielectric Thin Films 0.2BaTiO3 – 0.8BaZr0.5Ti0.5O3 on Fluorine Doped Tin Oxide Substrate

Dewi,

Nursyafni,

Daulay

et al. 2024

Mat. Res.

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Ferroelectric thin films of 0.2BaTiO 3 -0.8BaZr 0.5 Ti 0.5 O 3 (BT-BZT) are dielectric materials applied in various sensors, particularly in capacitor manufacturing, due to their excellent electrical properties. This ferroelectric material also has a high dielectric constant value, such that it is suitable for use in Ferroelectric Random Access Memory (FeRAM) and microwaves. Therefore, this study aimed to synthesize thin BT-BZT films with annealing temperature variations of 700 °C, 750 °C, and 800 °C. To achieve this, the sol-gel method was applied to Fluorine Doped Tin Oxide (FTO) substrate, a selected technique for its simplicity and cost-effectiveness. The electrochemical properties were characterized using electrochemical impedance spectroscopy (EIS). The research results show that at a frequency of 100 Hz, the highest dielectric constant obtained was 58975.43 at a temperature of 800 °C. This temperature has the highest resistance compared to other samples. The highest capacitance value is 2.9 µF at a temperature of 700 o C. Therefore, it was concluded that the annealing temperature influenced the dielectric constant and the capacitance values of the capacitor.

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Section: Introductionmentioning

confidence: 99%

Electrical Properties Analysis of Dielectric Thin Films 0.2BaTiO3 – 0.8BaZr0.5Ti0.5O3 on Fluorine Doped Tin Oxide Substrate

Dewi,

Nursyafni,

Daulay

et al. 2024

Mat. Res.

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Crystal‐Phase‐Engineered High‐Entropy Alloy Aerogels for Enhanced Ethylamine Electrosynthesis from Acetonitrile

Huang,

Chen,

Chang

et al. 2024

Advanced Materials

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Crystal‐phase engineering that promoting the rearrangement of active atoms to form new structural frameworks has achieved excellent result in the field of electrocatalysis and optimized the performance of various electrochemical reactions. Herein, for the first time, we found that the different components in metallic aerogels will affect the crystal‐phase transformation, especially in high‐entropy alloy aerogels (HEAAs), whose crystal‐phase transformation during annealing is more difficult than medium‐entropy alloy aerogels (MEAAs), but they still show better electrochemical performance. Specifically, PdPtCuCoNi HEAAs with the parent phase of face‐centered cubic (FCC) PdCu possess excellent 89.24% of selectivity, 746.82 mmol h−1 g−1cat. of yield rate, and 90.75% of Faraday efficiency for ethylamine during acetonitrile reduction reaction (ARR), while maintaining stability under 50 h of long‐term testing and 10 consecutive electrolysis cycles. The structure‐activity relationship indicates that crystal‐phase regulation from amorphous state to FCC phase promotes the atomic rearrangement in HEAAs, thereby optimizing the electronic structure, and enhancing the adsorption strength of reaction intermediates, improving the catalytic performance. This study provides a new paradigm for developing novel ARR electrocatalysts, and also expands the potential of crystal‐phase engineering in other application areas.This article is protected by copyright. All rights reserved

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Microstructural, Micromechanical, Wear, and Corrosion Properties of Cold Spray and Laser-Assisted Cold Spray CrMnCoFeNi Cantor HEA Coatings

Harfouche,

Alidokht,

Grandy

et al. 2024

J Therm Spray Tech

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EIS Study of Doped High-Entropy Alloy

Cited by 5 publications

References 44 publications

Electrical Properties Analysis of Dielectric Thin Films 0.2BaTiO3 – 0.8BaZr0.5Ti0.5O3 on Fluorine Doped Tin Oxide Substrate

Electrical Properties Analysis of Dielectric Thin Films 0.2BaTiO3 – 0.8BaZr0.5Ti0.5O3 on Fluorine Doped Tin Oxide Substrate

Crystal‐Phase‐Engineered High‐Entropy Alloy Aerogels for Enhanced Ethylamine Electrosynthesis from Acetonitrile

Microstructural, Micromechanical, Wear, and Corrosion Properties of Cold Spray and Laser-Assisted Cold Spray CrMnCoFeNi Cantor HEA Coatings

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