Thermal expansion and electrical conductivity of Fe and Cu doped MnCo2O4 spinel

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

Standard

Thermal expansion and electrical conductivity of Fe and Cu doped MnCo2O4 spinel. / Talic, Belma; Hendriksen, Peter Vang; Wiik, Kjell; Lein, Hilde Lea.

In: Solid State Ionics, Vol. 326, 2018, p. 90-99.

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

Harvard

APA

CBE

MLA

Vancouver

Author

Bibtex

@article{fcaafaf36bdf474bb15b3a70d5ef6dfc,
title = "Thermal expansion and electrical conductivity of Fe and Cu doped MnCo2O4 spinel",
abstract = "Manganese cobalt spinel oxides are promising coating materials for corrosion protection of metallic interconnects in solid oxide fuel cell stacks. This work investigates how Fe and Cu doping affect the crystal structure, thermal expansion and electrical conductivity of the MnCo2−xMxO4 (M = Cu, Fe; x = 0.1, 0.3, 0.5) spinel oxides. Single phase cubic spinels were successfully prepared by spray pyrolysis. The electrical conductivity between room temperature and 1000 °C increased with addition of Cu and decreased with addition of Fe. The thermal expansion coefficient (TEC) between 50 and 800 °C decreased from 14.4 to 11.0 × 10−6 K−1 going from MnCo2O4 to MnCo1.5Fe0.5O4. The TEC of the Cu substituted materials did not follow any obvious trend with composition and was likely influenced by precipitation of CuO during heating. Based on their physical properties, the Fe doped materials are the most attractive for application as SOFC interconnect coatings.",
keywords = "Solid oxide fuel cell, Thermal expansion, Electrical conductivity, Spinel",
author = "Belma Talic and Hendriksen, {Peter Vang} and Kjell Wiik and Lein, {Hilde Lea}",
year = "2018",
doi = "10.1016/j.ssi.2018.09.018",
language = "English",
volume = "326",
pages = "90--99",
journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier BV * North-Holland",

}

RIS

TY - JOUR

T1 - Thermal expansion and electrical conductivity of Fe and Cu doped MnCo2O4 spinel

AU - Talic, Belma

AU - Hendriksen, Peter Vang

AU - Wiik, Kjell

AU - Lein, Hilde Lea

PY - 2018

Y1 - 2018

N2 - Manganese cobalt spinel oxides are promising coating materials for corrosion protection of metallic interconnects in solid oxide fuel cell stacks. This work investigates how Fe and Cu doping affect the crystal structure, thermal expansion and electrical conductivity of the MnCo2−xMxO4 (M = Cu, Fe; x = 0.1, 0.3, 0.5) spinel oxides. Single phase cubic spinels were successfully prepared by spray pyrolysis. The electrical conductivity between room temperature and 1000 °C increased with addition of Cu and decreased with addition of Fe. The thermal expansion coefficient (TEC) between 50 and 800 °C decreased from 14.4 to 11.0 × 10−6 K−1 going from MnCo2O4 to MnCo1.5Fe0.5O4. The TEC of the Cu substituted materials did not follow any obvious trend with composition and was likely influenced by precipitation of CuO during heating. Based on their physical properties, the Fe doped materials are the most attractive for application as SOFC interconnect coatings.

AB - Manganese cobalt spinel oxides are promising coating materials for corrosion protection of metallic interconnects in solid oxide fuel cell stacks. This work investigates how Fe and Cu doping affect the crystal structure, thermal expansion and electrical conductivity of the MnCo2−xMxO4 (M = Cu, Fe; x = 0.1, 0.3, 0.5) spinel oxides. Single phase cubic spinels were successfully prepared by spray pyrolysis. The electrical conductivity between room temperature and 1000 °C increased with addition of Cu and decreased with addition of Fe. The thermal expansion coefficient (TEC) between 50 and 800 °C decreased from 14.4 to 11.0 × 10−6 K−1 going from MnCo2O4 to MnCo1.5Fe0.5O4. The TEC of the Cu substituted materials did not follow any obvious trend with composition and was likely influenced by precipitation of CuO during heating. Based on their physical properties, the Fe doped materials are the most attractive for application as SOFC interconnect coatings.

KW - Solid oxide fuel cell

KW - Thermal expansion

KW - Electrical conductivity

KW - Spinel

U2 - 10.1016/j.ssi.2018.09.018

DO - 10.1016/j.ssi.2018.09.018

M3 - Journal article

VL - 326

SP - 90

EP - 99

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

ER -