Advances and challenges in symmetrical solid oxide electrolysis cells: materials development and resource utilization

Sun, Yanping; Gu, Jimin; Zhang, Xiaoxin; Zhao, Yunxia; Bu, Yunfei; Alodhayb, Abdullah

doi:10.1039/d3qm00410d

Cited by 15 publications

(3 citation statements)

References 124 publications

(209 reference statements)

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“…1 Not only is it environmentally friendly and utilizes waste electricity but also recognized as an efficient and low-cost hydrogen production technology. 2,3 Based on the aforementioned advantages, SOEC stands out among the numerous hydrogen production equipment. Among them, the widely used traditional Ni-based SOEC is synthesized through mixing and milling technology.…”

Section: Introductionmentioning

confidence: 99%

“…Solid oxide electrolysis cells (SOECs) can generate hydrogen gas through high-temperature water electrolysis and reduce CO 2 emissions through direct electrolysis of CO 2 and coelectrolysis of H 2 O and CO 2 , which have the advantages of renewable energy conversion and environmental friendliness . Not only is it environmentally friendly and utilizes waste electricity but also recognized as an efficient and low-cost hydrogen production technology. , Based on the aforementioned advantages, SOEC stands out among the numerous hydrogen production equipment. Among them, the widely used traditional Ni-based SOEC is synthesized through mixing and milling technology. − …”

Section: Introductionmentioning

confidence: 99%

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First-Principles Study on Exsolution of Ni and Ni–M (M = Fe, Co, Cr, Cu) Alloy Nanoparticles in the SrTiO₃ Model as the Perovskite Cathode of Solid Oxide Electrolysis Cells

Hou,

Lin,

Wei

et al. 2024

J. Phys. Chem. C

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Ni-YSZ (yttria-stabilized zirconia) stands out among the cathode side materials of a solid oxide electrolysis cell (SOEC) due to its low cost and excellent catalytic performance. The agglomeration and coarsening of Ni greatly limit their performance during the long-term operation of SOEC. In this regard, the exsolution of metal nanoparticles in perovskite cathodes has attracted lots of attention. Meanwhile, the optimal mechanisms of the exsolution of metals or alloys are still unclear. With the SrTiO 3 material system as an example of SOEC cathode, several metal dopants (M = Fe, Co, Cr, Cu) and two different models: bulk codoping (i.e., Ni and M are doped in bulk crystal) or surface doping are introduced. The separation energy, electronic structure, and electronic interaction force are analyzed. Ni−M (M = Cr, Cu) in the model of bulk codoping and M (M = Fe, Co, Cr, Cu) in the mode of surface doping promote the exsolution of Ni or Ni−M alloy nanoparticles, respectively. The analysis of energy and electronic behaviors reveals that there is an electronic interaction force between the doped atoms, the oxygen atoms, and the B-site element of the material itself. The electronic interaction force contributes to the difference in separation energy. The promotion of Ni exsolutions is attributed to the reduction of Ni−O bond energy and the weakening of the electronic interaction force of the Ni-B site element, which is beneficial for the exsolution of Ni elements.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

First-Principles Study on Exsolution of Ni and Ni–M (M = Fe, Co, Cr, Cu) Alloy Nanoparticles in the SrTiO₃ Model as the Perovskite Cathode of Solid Oxide Electrolysis Cells

Hou,

Lin,

Wei

et al. 2024

J. Phys. Chem. C

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show abstract

“…Lowering the operation temperature to below 600 °C is the development trend of SOFCs in the future, significantly enhancing the operation stability and reducing materials’ cost. According to different ion conduction of the electrolyte material, typical SOFCs can be classified into two types: oxygen ion-conducting SOFCs (O-SOFCs) and proton-conducting SOFCs (H-SOFCs or PCFCs). , In consideration of the lower activation energy and higher mobility of a proton than an oxygen ion at low temperatures, PCFCs have recently received much attention and interest. Moreover, the generated water for PCFCs appears at the cathode side, which can remarkably promote fuel utilization without dilution of water.…”

Section: Introductionmentioning

confidence: 99%

High-Performance and Robust Composite Cathode via W Doping-Induced Phase Separation for Proton Ceramic Fuel Cells

Cao,

Wang,

Qiu

et al. 2024

Energy Fuels

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The development and commercialization of proton ceramic fuel cells (PCFCs) are greatly limited due to the lack of suitable cathode materials with a highly active oxygen reduction reaction (ORR) and robust operational stability. Herein, a composite cathode SrCo 0.8 Fe 0.15 W 0.05 O 3−δ (SCFW0.05), consisting of the main single-perovskite (SP) phase and minor double-perovskite (DP) phase, is successfully proposed via a small amount (5%) of W dopinginduced phase separation based on SrCo 0.8 Fe 0.2 O 3−δ (SCF). Consequently, the oxygen surface exchange, diffusion, and proton uptake capacity of the composite are expected to be enhanced under the synergistic effect between multiphases, leading to the electrochemical performance improvement of SCFW0.05. Experimentally, the SCFW0.05 composite cathode demonstrates a low area-specific resistance (ASR) of 0.74 Ω cm 2 on the BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3−δ (BZCYYb) electrolyte and operates stably for more than 400 h at 600 °C. Moreover, the PCFCs with the SCFW0.05 composite cathode obtain an excellent peak power density (PPD) value as high as 500 mW cm −2 at 600 °C. The new strategy of W doping-induced phase separation can pave the way to exploring the advanced self-assembled cathodes for PCFCs.

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Recent Progress in Sr₂Fe_1.5Mo_0.5O_6‐δ‐Based Multifunctional Materials for Energy Conversion and Storage

Sun,

Xu,

Song

et al. 2024

Adv Funct Materials

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Perovskite oxides, particularly double perovskite oxides, have drawn significant research interest within the fields of solid‐state chemistry and materials science. As a quintessential double perovskite oxide, Sr2Fe1.5Mo0.5O6‐δ (SFM) has unique electronic, magnetic, and catalytic properties. These attributes make it a promising candidate for energy conversion and storage applications. This review offers a comprehensive overview of advancements using SFM across various applications, including solid oxide cells, protonic ceramic cells, and electrocatalysis. Notably, the review highlights emerging optimization strategies that enhance functionality based on a fundamental understanding of the reaction mechanisms. The review concludes by discussing the persistent challenges facing SFM‐based functional materials, as well as their prospects, considering both fundamental research and industrial applications.

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Advances and challenges in symmetrical solid oxide electrolysis cells: materials development and resource utilization

Abstract: Solid oxide electrolysis cells (SOECs) have emerged as a promising technology for efficient hydrogen production and syngas conversion to low-carbon fuels. Among various SOEC configurations, symmetrical solid oxide electrolysis cells...

Cited by 15 publications

References 124 publications

First-Principles Study on Exsolution of Ni and Ni–M (M = Fe, Co, Cr, Cu) Alloy Nanoparticles in the SrTiO₃ Model as the Perovskite Cathode of Solid Oxide Electrolysis Cells

First-Principles Study on Exsolution of Ni and Ni–M (M = Fe, Co, Cr, Cu) Alloy Nanoparticles in the SrTiO₃ Model as the Perovskite Cathode of Solid Oxide Electrolysis Cells

High-Performance and Robust Composite Cathode via W Doping-Induced Phase Separation for Proton Ceramic Fuel Cells

Recent Progress in Sr₂Fe_1.5Mo_0.5O_6‐δ‐Based Multifunctional Materials for Energy Conversion and Storage

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Advances and challenges in symmetrical solid oxide electrolysis cells: materials development and resource utilization

Abstract: Solid oxide electrolysis cells (SOECs) have emerged as a promising technology for efficient hydrogen production and syngas conversion to low-carbon fuels. Among various SOEC configurations, symmetrical solid oxide electrolysis cells...

Cited by 15 publications

References 124 publications

First-Principles Study on Exsolution of Ni and Ni–M (M = Fe, Co, Cr, Cu) Alloy Nanoparticles in the SrTiO3 Model as the Perovskite Cathode of Solid Oxide Electrolysis Cells

First-Principles Study on Exsolution of Ni and Ni–M (M = Fe, Co, Cr, Cu) Alloy Nanoparticles in the SrTiO3 Model as the Perovskite Cathode of Solid Oxide Electrolysis Cells

High-Performance and Robust Composite Cathode via W Doping-Induced Phase Separation for Proton Ceramic Fuel Cells

Recent Progress in Sr2Fe1.5Mo0.5O6‐δ‐Based Multifunctional Materials for Energy Conversion and Storage

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First-Principles Study on Exsolution of Ni and Ni–M (M = Fe, Co, Cr, Cu) Alloy Nanoparticles in the SrTiO₃ Model as the Perovskite Cathode of Solid Oxide Electrolysis Cells

First-Principles Study on Exsolution of Ni and Ni–M (M = Fe, Co, Cr, Cu) Alloy Nanoparticles in the SrTiO₃ Model as the Perovskite Cathode of Solid Oxide Electrolysis Cells

Recent Progress in Sr₂Fe_1.5Mo_0.5O_6‐δ‐Based Multifunctional Materials for Energy Conversion and Storage