Enhanced production of methane through the use of a catalytic Ni–Fe pre-layer in a solid oxide co-electrolyser

Faro, Massimiliano Lo; Silva, Wanderson O.; Barrientos, Wilner Valenzuela; Saglietti, G. G. A; Zignani, Sabrina Campagna; Ticianelli, Edson A.; Aricò, A.S.

doi:10.1016/j.ijhydene.2019.06.161

Cited by 16 publications

(4 citation statements)

References 33 publications

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“…Figure e–j shows coelectrolysis using a perovskite La 0.43 Ca 0.37 TiO 3 electrode doped with 6% rhodium titanate for exsolving a high concentration of Rh nanoparticles, as reported by Kyriakou et al, whose research has demonstrated that exsolution can effectively activate low-reactive greenhouse gases (such as CO 2 and CH 4 ) using precious metals, which enables the cogeneration of syngas and electricity. Furthermore, owing to their excellent catalytic activities, bimetallic alloys, such as Ni–Fe, − Fe–Sn, Co–Fe, Pd–Ni, , and Cu–Fe, have been used in SOEC catalysis. For these alloys, with increasing reaction surface area, the electrocatalytic activity enhances.…”

Section: Efficiency: Materialsmentioning

confidence: 99%

Syngas Production from CO₂ and H₂O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Hou,

Jiang,

Wei

et al. 2024

Chem. Rev.

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Highly efficient coelectrolysis of CO 2 /H 2 O into syngas (a mixture of CO/ H 2 ), and subsequent syngas conversion to fuels and value-added chemicals, is one of the most promising alternatives to reach the corner of zero carbon strategy and renewable electricity storage. This research reviews the current state-of-the-art advancements in the coelectrolysis of CO 2 /H 2 O in solid oxide electrolyzer cells (SOECs) to produce the important syngas intermediate. The overviews of the latest research on the operating principles and thermodynamic and kinetic models are included for both oxygen-ion-and proton-conducting SOECs. The advanced materials that have recently been developed for both types of SOECs are summarized. It later elucidates the necessity and possibility of regulating the syngas ratios (H 2 :CO) via changing the operating conditions, including temperature, inlet gas composition, flow rate, applied voltage or current, and pressure. In addition, the sustainability and widespread application of SOEC technology for the conversion of syngas is highlighted. Finally, the challenges and the future research directions in this field are addressed. This review will appeal to scientists working on renewable-energy-conversion technologies, CO 2 utilization, and SOEC applications. The implementation of the technologies introduced in this review offers solutions to climate change and renewable-power-storage problems.

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Section: Efficiency: Materialsmentioning

confidence: 99%

Syngas Production from CO₂ and H₂O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Hou,

Jiang,

Wei

et al. 2024

Chem. Rev.

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“…This implies that CH 4 synthesis within O-SOECs can be used as a way to manage heat losses within the cell and increase the efficiency of the system . Several catalysts have been reported to enhance selectivity to CH 4 synthesis from syngas generated via co-electrolysis in O-SOECs – ; however, this is beyond the focus of this Review, which mainly deals with electrochemical reactions at the electrode surface (specifically in this case those associated with co-electrolysis of H 2 O and CO 2 ).…”

Section: Electrocatalysis In Oxygen Ion Conducting Solid Oxide Electr...mentioning

confidence: 99%

Electrocatalysis in Solid Oxide Fuel Cells and Electrolyzers

Jang,

S. A. Carneiro,

Crawford

et al. 2024

Chem. Rev.

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Interest in energy-to-X and X-to-energy (where X represents green hydrogen, carbon-based fuels, or ammonia) technologies has expanded the field of electrochemical conversion and storage. Solid oxide electrochemical cells (SOCs) are among the most promising technologies for these processes. Their unmatched conversion efficiencies result from favorable thermodynamics and kinetics at elevated operating temperatures (400−900 °C). These solid-state electrochemical systems exhibit flexibility in reversible operation between fuel cell and electrolysis modes and can efficiently utilize a variety of fuels. However, electrocatalytic materials at SOC electrodes remain nonoptimal for facilitating reversible operation and fuel flexibility. In this Review, we explore the diverse range of electrocatalytic materials utilized in oxygen-ion-conducting SOCs (O-SOCs) and protonconducting SOCs (H-SOCs). We examine their electrochemical activity as a function of composition and structure across different electrochemical reactions to highlight characteristics that lead to optimal catalytic performance. Catalyst deactivation mechanisms under different operating conditions are discussed to assess the bottlenecks in performance. We conclude by providing guidelines for evaluating the electrochemical performance of electrode catalysts in SOCs and for designing effective catalysts to achieve flexibility in fuel usage and mode of operation. CONTENTS1. Introduction 8234 2. Thermodynamics of Reactions in Solid Oxide/ Proton Conducting Electrochemical Cells (O-SOC/ H-SOCs) 8237 3. Electrochemical Kinetics in SOCs 8241 4. Electrocatalysis in Oxygen Ion Conducting Solid Oxide Electrochemical Cells (O-SOCs) 8244 4.1. Electrochemical Fuel Oxidation Catalysis in O-SOFCs 8244 4.1.1. Electrochemical Oxidation of H 2 in O-SOFCs 8244 4.1.2. Hydrocarbon Fueled O-SOFCs 8248 4.1.3. Ammonia Fueled O-SOFCs 8252 4.2. H 2 O Electrolysis in O-SOECs 8253 4.2.1. Introduction to H 2 O-Electrolysis Kinetics in O-SOECs 8253 4.2.2. Catalyst Structure/Performance Trends 8253 4.3. CO 2 Electrolysis and Co-electrolysis of H 2 O/ CO 2 in O-SOECs 8255 4.3.1. Introduction to CO 2 Electrolysis and H 2 O-CO 2 Co-electrolysis Kinetics in O-SOECs 8255 4.3.2. Catalyst Structure/Performance Trends 8259 4.4. Oxygen Reduction/Evolution Reactions (ORR/OER) in O-SOCs 8262

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“…Based on the results achieved with SOFCs, the authors have suggested a similar approach for the SOECs to enhance methane production. In 2020, two studies published in the Journal of Energy Storage [35] and in the International Journal of Hydrogen Energy [36] reported on the findings of Ni-Fe and Cu-Sn alloys combined with CGO as possible functional layers for commercial SOC cells. By comparing gas chromatographic analyses of the outlet gases of these two cells and of a bare cell, it was found that the quality of the outlet gas can be improved by operating at intermediate temperatures and through the simple addition of a functional layer to a commercial SOEC cell.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ni-Modified LSFCO Promoting Layer on the Gas Produced through Co-Electrolysis of CO2 and H2O at Intermediate Temperatures

2021

Self Cite

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The co-electrolysis of CO2 and H2O at an intermediate temperature is a viable approach for the power-to-gas conversion that deserves further investigation, considering the need for green energy storage. The commercial solid oxide electrolyser is a promising device, but it is still facing issues concerning the high operating temperatures and the improvement of gas value. In this paper we reported the recent findings of a simple approach that we have suggested for solid oxide cells, consisting of the addition of a functional layer coated to the fuel electrode of commercial electrochemical cells. This approach simplifies the transition to the next generation of cells manufactured with the most promising materials currently developed, and improves the gas value in the outlet stream of the cell. Here, the material in use as a coating layer consists of a Ni-modified La0.6Sr0.4Fe0.8Co0.2O3, which was developed and demonstrated as a promising fuel electrode for solid oxide fuel cells. The results discussed in this paper prove the positive role of Ni-modified perovskite as a coating layer for the cathode, since an improvement of about twofold was obtained as regards the quality of gas produced.

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Enhanced production of methane through the use of a catalytic Ni–Fe pre-layer in a solid oxide co-electrolyser

Cited by 16 publications

References 33 publications

Syngas Production from CO₂ and H₂O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Syngas Production from CO₂ and H₂O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Electrocatalysis in Solid Oxide Fuel Cells and Electrolyzers

The Effect of Ni-Modified LSFCO Promoting Layer on the Gas Produced through Co-Electrolysis of CO2 and H2O at Intermediate Temperatures

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Enhanced production of methane through the use of a catalytic Ni–Fe pre-layer in a solid oxide co-electrolyser

Cited by 16 publications

References 33 publications

Syngas Production from CO2 and H2O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Syngas Production from CO2 and H2O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Electrocatalysis in Solid Oxide Fuel Cells and Electrolyzers

The Effect of Ni-Modified LSFCO Promoting Layer on the Gas Produced through Co-Electrolysis of CO2 and H2O at Intermediate Temperatures

Contact Info

Product

Resources

About

Syngas Production from CO₂ and H₂O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Syngas Production from CO₂ and H₂O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications