Copper Iron Conversion Coating for Solid Oxide Fuel Cell Interconnects

Grolig, Jan Gustav; Alnegren, Patrik; Froitzheim, Jan; Svensson, Jan‐Erik

doi:10.1016/j.jpowsour.2015.06.139

Cited by 34 publications

(10 citation statements)

References 35 publications

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“…In the case of the EPD prepared spinel coating, it provided a protective behaviour for the alloy over the testing period. This has also been observed by other authors [31,67]. Contact with a Mn source did not lead to a negative spinel compositional change.…”

Section: Post Mortem Characterization After 5000 Hours At 800°csupporting

confidence: 88%

“…It must be noted, that LSM can by itself provide some corrosion protection properties, slowing oxide growth rate [65,66]. The interactions of the oxide scale and the contact layer used for the ASR measurement cannot be avoided [28,67]. As measured by the point EDS analysis, In order to better understand the evolution of the prepared Mn1.5Co1.5O4 coatings after the 5000 hrs at 800°C and to investigate possible reactions and elemental diffusion, a more detailed analyses of these samples are reported in Figures 7, 8 and 9.…”

Section: Post Mortem Characterization After 5000 Hours At 800°cmentioning

confidence: 99%

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Microstructural and electrical characterization of Mn-Co spinel protective coatings for solid oxide cell interconnects

Molin

Sabato

Bindi

et al. 2017

Journal of the European Ceramic Society

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Section: Post Mortem Characterization After 5000 Hours At 800°csupporting

confidence: 88%

Section: Post Mortem Characterization After 5000 Hours At 800°cmentioning

confidence: 99%

Microstructural and electrical characterization of Mn-Co spinel protective coatings for solid oxide cell interconnects

Molin

Sabato

Bindi

et al. 2017

Journal of the European Ceramic Society

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“…Especially, some innovative alloys, such as Crofer 22 APU, Hitachi ZMG 232, and Ebrite, are proved to possess improved environmental stability . Moreover, many kinds of coatings are designed and deposited on interconnect to block off the diffusion of volatile Cr (VI) species. Although these efforts have certain effect, it is still a crucial issue for further preventing Cr evaporation of Cr containing interconnects.…”

Section: Introductionmentioning

confidence: 99%

Long‐term oxidation and electrical behavior of Nb‐doped Ti₃SiC₂ as solid oxide fuel cell interconnects

Zheng

Hua

et al. 2017

J Am Ceram Soc

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Nb-doped Ti 3 SiC 2 compounds ((Ti 1-x Nb x ) 3 SiC 2 , x=0%, 2%, 5%, 7%, and 10%) as novel interconnect materials of intermediate temperature solid oxide fuel cell (IT-SOFC) were studied in the simulated cathode atmosphere. The long-term oxidation behaviors and area-specific resistance (ASR) of these compounds have been investigated at 800°C up to 700 hours. Among these compounds, (Ti 0.95 Nb 0.05 ) 3 SiC 2 shows the best oxidation resistance and lowest postoxidation ASR (5.6 mΩÁcm 2 after exposure at 800°C in air for 700 hours), endowing it a great promising material in the application as interconnect of IT-SOFC. After oxidation, Nb is mainly doped uniformly into the lattice of rutile-TiO 2 (r-TiO 2 ) grains formed on the tested compounds. Nb doping could decrease the concentrations of both oxygen vacancies and titanium interstitials in r-TiO 2 . As a result, the oxidation rate of (Ti,Nb) 3 SiC 2 decreases remarkably, the structure of the oxide scale changes from a duplex layer of TiO 2 outer layer and TiO 2 +SiO 2 mixture inner layer to a single mixture layer. Nb doping also increases the amount of semifree electrons, causing the significant reduce of the postoxidation ASR of (Ti,Nb) 3 SiC 2 .

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“…EIS responses of SOC in fuel cell mode are commonly acquired in the frequency range 0.1 mHz < f < 10 kHz. A summary of the possible peak attributions is reported in Table 1 [13,[27][28][29][30]. In this context, this paper aims to further develop a methodology for the identification of early-stage degradation effects in commercial-sized SOCs and to validate with respect to SOC applications under relevant operating conditions (squared-area cells + steel interconnection frames).…”

Section: Introductionmentioning

confidence: 99%

Operando Analysis of Losses in Commercial-Sized Solid Oxide Cells: Methodology Development and Validation

et al. 2022

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The development of decarbonised systems is being fostered by the increasing demand for technological solutions for the energy transition. Solid Oxide Cells are high-efficiency energy conversion systems that are foreseen for commercial development. They exhibit potential power generation and power-to-gas applications, including a reversible operation mode. Long-lasting high performance is essential for guaranteeing the success of the technology; therefore, it is fundamental to provide diagnosis tools at this early stage of development. In this context, operando analysis techniques help detect and identify incipient degradation phenomena to either counteract damage at its origin or correct operando protocols. Frequent switches from the fuel cell to the electrolyser mode add more challenges with respect to durable performance, and deep knowledge of reverse-operation-induced damage is lacking in the scientific and technical literature. Following on from preliminary experience with button cells, in this paper, the authors aim to transfer the methodology to commercial-sized Solid Oxide Cells. On the basis of the experimental evidence collected on planar square cells under dry and wet reactant feed gases, the main contributions to impedance are identified as being charge transfer (f = 103–104 Hz), oxygen surface exchanged and diffusion in bulk LSCF (f = 102–103 Hz), and gas diffusion in the fuel electrode (two peaks, f = 1–100 Hz). The results are validated using the ECM methodology, implementing an LRel(RctQ)GWFLW circuit.

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Copper Iron Conversion Coating for Solid Oxide Fuel Cell Interconnects

Cited by 34 publications

References 35 publications

Microstructural and electrical characterization of Mn-Co spinel protective coatings for solid oxide cell interconnects

Microstructural and electrical characterization of Mn-Co spinel protective coatings for solid oxide cell interconnects

Long‐term oxidation and electrical behavior of Nb‐doped Ti₃SiC₂ as solid oxide fuel cell interconnects

Operando Analysis of Losses in Commercial-Sized Solid Oxide Cells: Methodology Development and Validation

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Copper Iron Conversion Coating for Solid Oxide Fuel Cell Interconnects

Cited by 34 publications

References 35 publications

Microstructural and electrical characterization of Mn-Co spinel protective coatings for solid oxide cell interconnects

Microstructural and electrical characterization of Mn-Co spinel protective coatings for solid oxide cell interconnects

Long‐term oxidation and electrical behavior of Nb‐doped Ti3SiC2 as solid oxide fuel cell interconnects

Operando Analysis of Losses in Commercial-Sized Solid Oxide Cells: Methodology Development and Validation

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Long‐term oxidation and electrical behavior of Nb‐doped Ti₃SiC₂ as solid oxide fuel cell interconnects