DataVXACS Applied Energy MaterialsPaper
journal article·2020-10-26Open access

Ternary Ni–Co–Fe Exsolved Nanoparticles/Perovskite System for Energy Applications: Nanostructure Characterization and Electrochemical Activity

Mariano Santaya, Horacio E. Troiani, Alberto Caneiro, Liliana V. Mogni

ACS Applied Energy Materials· Volume 3· Issue 10
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Source abstract

Abstract

The exsolution of Ni–Co–Fe from a Sr0.93(Ti0.3Fe0.56Ni0.07Co0.07)O3−δ perovskite (STFNC) is explored as a strategy to produce electrochemically active electrodes for symmetric-SOFC (S-SOFC). It was found that a nanostructured NiCoFe ternary alloy phase, with approximately equal amounts of each metal, can be formed by this method. The STFNC electrode is studied via electrochemical impedance spectroscopy, showing a really interesting potential as S-SOFC electrode: the anode polarization resistance was 1.12 Ω·cm2 in a wet 10%H2 atmosphere at 700 °C (exsolving in situ the NiCoFe phase), and the cathode polarization resistance at 700 °C in air was 0.054 and 0.042 Ω·cm2, before and after exsolution, respectively.
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Research context

Energy storageMetals & alloysNanomaterialsElectronic materials

OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Advanced battery technologies research · Electrocatalysts for Energy Conversion

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Departmento Caracterización de Materiales, Instituto de Nanociencia y Nanotecnologia, CNEA-CONICET, Centro Atómico Bariloche, Avenida Bustillo 9500, CP8400 San Carlos de Bariloche, Argentina

Departmento Caracterización de Materiales, CNEA-CONICET, Centro Atómico Bariloche, Avenida Bustillo 9500, CP8400 San Carlos de Bariloche, Argentina

Instituto Balseiro, Universidad Nacional de Cuyo, R8402AGP San Carlos de Bariloche, Argentina

Y-TEC, YPF Tecnología, Avenida del Petrolero s/n entre 129 y 143, CP1923 Berisso, Argentina

Funding

Consejo Nacional de Investigaciones Cient?ficas y T?cnicas · Fondo para la Investigaci?n Cient?fica y Tecnol?gica · Universidad Nacional de Cuyo

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