Chemical oxygen surface exchange coefficient (k*) of the SrxTi0.30Fe0.70O3 (x=0.90, 0.95 and 1.00) at different temperatures

Description

In this dataset are presented k* values designated based on the analysis of the electrical conductivity relaxation (ECR) mesurement of the SrxTi0.30Fe0.70O3 (x=0.90, 0.95, 1.00) materials. The applied temperatures were 800 °C, 750 °C, 700 °C, 650 °C, and 600 °C. Studies were performed in a small tube furnace (internal diameter ~20 mm) with 64 cm³ gas volume. During the four-point single frequency electrochemical impedance spectroscopy measurement (1 Hz), the oxygen partial pressures were changed from 20% O₂ to 10% O₂ and the reverse.

k* was designated for both cases incorporation and removal of oxygen.

Dataset file

k vs temp.xlsx

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Details

Year of publication:

2022

Verification date:

2024-11-27

Dataset language:

English

Fields of science:

Automation, electronic and electrical engineering (Engineering and Technology)
materials engineering (Engineering and Technology)

DOI:

10.34808/jq6v-bj64

Funding:

Understanding and minimization of ohmic and polarization losses in solid oxide cells by nanocrystalline ceramic and cermet functional layers

Series:

Impact of strontium non-stoichiometry of SrxTi0.3Fe0.7O3-δ

Verified by:

Gdańsk University of Technology

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