Infiltration of nickel and copper catalysts into a GDC backbone assisted by supercritical CO<sub>2</sub> for efficient SOFC anodes

Guesnet, Laura; Aubert, Guillaume; Hubert, Simon; Geffroy, Pierre-Marie; Aymonier, Cyril; Bassat, Jean‐Marc

doi:10.1039/d2se00251e

Cited by 7 publications

(5 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even when compared to electrodes featuring high GDC composition, such as those incorporating nano-Ni particles on the GDC surface, 30 electrode C remains competitive. However, in comparison to the optimal results reported in the literature 21 for electrodes obtained by infiltrating Ni into the GDC matrix, electrode C falls short in terms of performance.…”

Section: Resultscontrasting

confidence: 62%

“…[18][19][20] The performance of cells resulting from the infiltration of GDC into a porous backbone of pure Ni reported in the literature 20 did not achieve as good results as those from the infiltration of Ni or Ni-ceria into metal-ceramics 14 or sintered oxide backbones. 21 Several studies have delved into the structural changes observed in commonly utilized Ni/GDC anodes. The primary aging phenomena are attributed to Ni coarsening, agglomeration, and depletion.…”

Section: List Of Symbolsmentioning

confidence: 99%

See 1 more Smart Citation

Ni/GDC Fuel Electrode for Low-Temperature SOFC and its Aging Behavior Under Accelerated Stress

Liu,

Juckel,

Menzler

et al. 2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

The microstructural integrity of Ni-based fuel electrodes is important for long-term solid oxide fuel cell (SOFC) operation. Degradation due to microstructural changes such as Ni-agglomeration, coarsening, and densification must be prevented by an appropriate microstructure. Here, the performance of four types of nickel-ceria-based fuel electrodes, which differ concerning layer sequence and manufacturing processes, was evaluated by electrochemical impedance spectroscopy at the nominal operating temperature of 600°C. Electrodes produced through screen-printed GDC exhibited an acceptable polarization resistance (0.260 Ωcm²), whereas electrodes with an additional printed Ni/GDC layer demonstrated inferior performance (0.550 Ωcm²). Electrodes formed through infiltration of GDC into the printed GDC-layer displayed unreproducible performance values ranging from 0.16 to 1.20 Ωcm² despite similar processing. Conversely, electrodes with an extra layer of GDC infiltrated into the Ni-backbone exhibited good performance (0.195 Ωcm²) and stability. Accelerated degradation tests under OCV at increased operating temperatures of 700 and 900°C were performed on the sample based on a GDC infiltrated Ni-backbone that performed best among reproducible samples. The polarization resistance at 600°C recorded at the beginning and the end of life increased by up to 100%. Microstructural analysis of the electrodes at different aging states revealed strong microstructural changes of fine-infiltrated GDC structures and Ni agglomeration at higher operating temperature

show abstract

Section: Resultscontrasting

confidence: 62%

Section: List Of Symbolsmentioning

confidence: 99%

Ni/GDC Fuel Electrode for Low-Temperature SOFC and its Aging Behavior Under Accelerated Stress

Liu,

Juckel,

Menzler

et al. 2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Infiltrating GDC into pure Ni anode improved the polarization resistance from 10.7 Ω•cm² to 1.50 Ω•cm² at 700 °C (18)(19)(20). The performance of cells from infiltration of GDC into a porous backbone of pure Ni reported in literature (20) did not achieve as good results as those from the infiltration of Ni/Niceria into metal-ceramics (14) or sintered oxide backbones (21).…”

Section: Introductionmentioning

confidence: 90%

Ni / GDC Fuel Electrode for Low Temperature SOFC and its Aging Behavior under Accelerated Stress

Liu¹,

Juckel²,

Menzler³

et al. 2023

ECS Trans.

View full text Add to dashboard Cite

The microstructural integrity of Ni-based fuel electrodes is mandatory for long term SOFC operation. Degradation due to microstructural changes as Ni-agglomeration, sintering and densification has to be prevented by an appropriate microstructure. In this work the performance of 4 types of nickel-ceria based fuel electrodes, which differ with respect to layer sequence and manufacturing processes, is evaluated by electrochemical impedance spectroscopy at the nominal operating temperature of 600 °C. Accelerated degradation tests at increased operating temperatures of 700 °C and 900 °C are performed on the one based on a GDC infiltrated Ni-backbone that performed the best. The polarization resistance at 600 °C recorded at the beginning and the end of life increased by up to 100%. Microstructural analysis of the electrodes at different aging states revealed strong microstructural changes of fine infiltrated GDC structures and Ni agglomeration at higher operating temperature.

show abstract

“…With O 2− conduction in the solid phase, the SOFC runs at 800-1000 • C. A sandwiched structure anode/electrolyte/cathode with diverse materials is always used in traditional SOFCs [47][48][49][50][51]. Due to the varied electrode materials, traditional SOFCs require at least two heating stages, resulting in high cost and energy consumption.…”

Section: Types Of Fcsmentioning

confidence: 99%

A Critical Review on Artificial Intelligence for Fuel Cell Diagnosis

et al. 2022

View full text Add to dashboard Cite

In recent years, fuel cell (FC) technology has seen a promising increase in its proportion in stationary power production. Several pilot projects are in operation across the world, with the number of running hours steadily rising, either as stand-alone units or as part of integrated gas turbine–electric energy plants. FCs are a potential energy source with great efficiency and zero emissions. To ensure the best performance, they normally function within a confined temperature and humidity range; nevertheless, this makes the system difficult to regulate, resulting in defects and hastened deterioration. For diagnosis, there are two primary approaches: restricted input information, which gives an unobtrusive, rapid yet restricted examination, and advanced characterization, which provides a more accurate diagnosis but frequently necessitates invasive or delayed tests. Artificial Intelligence (AI) algorithms have shown considerable promise in providing accurate diagnoses with quick data collecting. This work focuses on software models that allow the user to evaluate many different possibilities in the shortest amount of time and is a vital method for proper and dynamic analysis of such entities. The artificial neural network, genetic algorithm, particle swarm optimization, random forest, support vector machine, and extreme learning machine are common AI approaches discussed in this review. This article examines the modern practice and provides recommendations for future machine learning methodologies in fuel cell diagnostic applications. In this study, these six AI tools are specifically explained with results for a better understanding of the fuel cell diagnosis. The conclusion suggests that these approaches are not only a popular and beneficial tool for simulating the nature of an FC system, but they are also appropriate for optimizing the operational parameters necessary for an ideal FC device. Finally, observations and ideas for future research, enhancements, and investigations are offered.

show abstract

Infiltration of nickel and copper catalysts into a GDC backbone assisted by supercritical CO₂ for efficient SOFC anodes

Abstract: This study describes an original method developed for the shaping of composites Solid Oxide Fuel Cells (SOFC) anodes including either nickel or copper as metal. There are prepared by catalyst...

Cited by 7 publications

References 47 publications

Ni/GDC Fuel Electrode for Low-Temperature SOFC and its Aging Behavior Under Accelerated Stress

Ni/GDC Fuel Electrode for Low-Temperature SOFC and its Aging Behavior Under Accelerated Stress

Ni / GDC Fuel Electrode for Low Temperature SOFC and its Aging Behavior under Accelerated Stress

A Critical Review on Artificial Intelligence for Fuel Cell Diagnosis

Contact Info

Product

Resources

About

Infiltration of nickel and copper catalysts into a GDC backbone assisted by supercritical CO2 for efficient SOFC anodes

Abstract: This study describes an original method developed for the shaping of composites Solid Oxide Fuel Cells (SOFC) anodes including either nickel or copper as metal. There are prepared by catalyst...

Cited by 7 publications

References 47 publications

Ni/GDC Fuel Electrode for Low-Temperature SOFC and its Aging Behavior Under Accelerated Stress

Ni/GDC Fuel Electrode for Low-Temperature SOFC and its Aging Behavior Under Accelerated Stress

Ni / GDC Fuel Electrode for Low Temperature SOFC and its Aging Behavior under Accelerated Stress

A Critical Review on Artificial Intelligence for Fuel Cell Diagnosis

Contact Info

Product

Resources

About

Infiltration of nickel and copper catalysts into a GDC backbone assisted by supercritical CO₂ for efficient SOFC anodes