TiN-Ni Cermets with High Oxidation Resistance and Electrical Conductivity as Candidates for Intermediate-Temperature Solid Oxide Fuel Cell Interconnects

Duan, Hang; Liu, Yan; Qi, Qian; Zhang, Hui; Huang, Zhengren

doi:10.1007/s11837-019-03418-7

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…Figure b illustrates the oxidation kinetic profiles of uncoated, AS22-air, and AS22-Ar samples at 800 °C. It can be seen that the square values of oxidation weight gain of uncoated, AS22-air, and AS22-Ar samples are proportional to the oxidation time, meeting the parabolic kinetics law portrayed by where Δ W / A represents the weight gain per unit area, K P stands for the oxidation rate that corresponds to the slope of the fitting line, and t is the oxidation time . Based on fitting results, it can be found from Table that the oxidation rate of AS22-air and AS22-Ar samples is lower than that of the uncoated sample, indicating that the CoFe 2 O 4 spinel coating can obviously prevent the inward diffusion of O 2– .…”

Section: Resultsmentioning

confidence: 66%

“…where ΔW/A represents the weight gain per unit area, K P stands for the oxidation rate that corresponds to the slope of the fitting line, and t is the oxidation time. 33 Based on fitting results, it can be found from Table 3 that the oxidation rate of AS22-air and AS22-Ar samples is lower than that of the uncoated sample, indicating that the CoFe 2 O 4 spinel coating can obviously prevent the inward diffusion of O 2− . The high oxidation rate of the uncoated sample is owing to the absence of a protective coating on the surface.…”

Section: Phases and Morphologies Of Coating In Armentioning

confidence: 99%

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Impact of Different Atmospheres on Oxidation and Electrical Performance of a Solid Oxide Fuel Cell Interconnect with Co-Containing Protective Coating

Liu

Shi

et al. 2020

Energy Fuels

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Chromium (Cr) evaporation of ferritic stainless steel (FSS) interconnects is considered to be the main reason for severe deterioration of solid oxide fuel cells (SOFCs). To suppress the influence of Cr evaporation, the development of a protective coating material on the FSS interconnects has been proved to be an effective way. Herein, we prepare a Co-containing protective coating via a facile pack cementation technique in different atmospheres on an AISI 430 FSS interconnect. The obtained coating is valid for enhancing the oxidation resistance and electrical performance of the FSS interconnect. After the isothermal oxidation test, the weight gain of the coated sample in Ar (0.415 mg/cm2) is smaller than that of uncoated (1.613 mg/cm2) and coated samples in air (0.498 mg/cm2). In addition, after the area specific resistance (ASR) test, the coated sample (73.68 mΩ cm2) in Ar has the lowest ASR compared with the uncoated (236.88 mΩ cm2) and coated samples in air (96.32 mΩ cm2). These results indicate that the formation of the CoFe2O4 spinel layer heightens oxidation resistance and electrical properties through preventing the outward diffusion of Cr3+ and inward diffusion of O2–. This work verifies that the Co-containing protective coating prepared in Ar is a promising coating material for SOFC applications.

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Section: Resultsmentioning

confidence: 66%

Section: Phases and Morphologies Of Coating In Armentioning

confidence: 99%