TY - JOUR
T1 - Evaluation of Ag-doped (MnCo)3O4 spinel as a solid oxide fuel cell metallic interconnect coating material
AU - Lee, Kunho
AU - Yoon, Byoungyoung
AU - Kang, Juhyun
AU - Lee, Sanghun
AU - Bae, Joongmyeon
N1 - Funding Information:
This work was supported by the Global Frontier R&D Program in the Center for Multiscale Energy System funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea ( 2011-0031569 ). Additionally, this work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea ( No. 20174030201590 ).
Funding Information:
This work was supported by the Global Frontier R&D Program in the Center for Multiscale Energy System funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea (2011-0031569). Additionally, this work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20174030201590).
Publisher Copyright:
© 2017 Hydrogen Energy Publications LLC
PY - 2017/12/7
Y1 - 2017/12/7
N2 - To suppress vaporization of Cr oxides from the metallic interconnects of solid oxide fuel cells, studies on ceramic coating materials have been widely conducted. Among the studied materials, Mn-Co spinel has been a point of focus because of its benign reaction with metal substrates. This paper presents the evaluation results for a modified Mn-Co spinel. Ag was selected as a dopant for Mn-Co spinel, and various experiments were carried out to investigate the suitability of the doped spinel as an interconnect coating material. First, the lattice parameters were demonstrated to be stably maintained even though the Ag dopant is a precious metal. Second, the electrical conductivity was confirmed to be increased upon doping, and the thermal expansion coefficient of the doped material well matched that of AISI444. Third, through long-term oxidation and single-cell tests, the Ag-doped Mn-Co spinel was shown to be a useful coating material for compatible metallic interconnects in solid oxide fuel cell cathodes.
AB - To suppress vaporization of Cr oxides from the metallic interconnects of solid oxide fuel cells, studies on ceramic coating materials have been widely conducted. Among the studied materials, Mn-Co spinel has been a point of focus because of its benign reaction with metal substrates. This paper presents the evaluation results for a modified Mn-Co spinel. Ag was selected as a dopant for Mn-Co spinel, and various experiments were carried out to investigate the suitability of the doped spinel as an interconnect coating material. First, the lattice parameters were demonstrated to be stably maintained even though the Ag dopant is a precious metal. Second, the electrical conductivity was confirmed to be increased upon doping, and the thermal expansion coefficient of the doped material well matched that of AISI444. Third, through long-term oxidation and single-cell tests, the Ag-doped Mn-Co spinel was shown to be a useful coating material for compatible metallic interconnects in solid oxide fuel cell cathodes.
KW - Ag-doped Mn-Co spinel
KW - Cr deposition
KW - Interconnect coating material
KW - Solid oxide fuel cell
UR - http://www.scopus.com/inward/record.url?scp=85033689107&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2017.10.017
DO - 10.1016/j.ijhydene.2017.10.017
M3 - Article
AN - SCOPUS:85033689107
SN - 0360-3199
VL - 42
SP - 29511
EP - 29517
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 49
ER -