Praseodymium based double-perovskite cathode nanofibers for intermediate temperature solid oxide fuel cells (IT-SOFC)

Gümeci, Cenk; Parrondo, Javier; Hussain, A. Mohammed; Thompson, Dave; Dale, Nilesh

doi:10.1016/j.ijhydene.2021.07.070

Cited by 30 publications

(10 citation statements)

References 41 publications

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“…Another approach is to maximize the reactive sites by manipulating the electrode’s microstructure. The electrospinning technology has been extensively utilized to fabricate nanofibers for electrodes with improved electrical connectivity and ultra-high porosity for transport of electrons and gases. − However, there is a thorny challenge regarding how to effectively transform the nanofibers to an efficient electrode with firm interfacial adhesion onto the electrolyte and no damage to the unique morphology of nanofibers, due to the mechanical fragility of nanofibers and the high tendency of thermally induced shrinkage and microstructural coarsening of nanofiber electrodes. − Lee et al reported that the poor bonding between a Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3−δ –Gd 0.1 Ce 0.9 O 1.95 composite nanofiber electrode and electrolyte resulted in a huge ohmic resistance of 24.61 Ω cm 2 at 700 °C …”

Section: Introductionmentioning

confidence: 99%

Facile Approach for Improving the Interfacial Adhesion of Nanofiber Air Electrodes of Reversible Solid Oxide Cells

Chen

Jiang

Yue

et al. 2023

ACS Appl. Mater. Interfaces

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Nanofibers have great promise as a highly active air electrode for reversible solid oxide cells (ReSOCs); however, one thorny issue is how to adhesively stick nanofibers to electrolyte with no damage to the original morphology. Herein, PrBa 0.8 Ca 0.2 Co 2 O 5+δ (PBCC) nanofibers are applied as an air electrode by a facile direct assembly approach that leads to the retention of most of the unique microstructure of nanofibers, and firm adhesion of the nanofiber electrode onto the electrolyte is achieved by applying electrochemical polarization. A single cell with the PBCC nanofiber air electrode exhibits excellent maximum power density (1.97 W cm −2 ), electrolysis performance (1.3 A cm −2 at 1.3 V), and operating stability at 750 °C for 200 h. These findings provide a facile means for the utilization of nanofiber electrodes for high-performance and durable ReSOCs.

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Section: Introductionmentioning

confidence: 99%

Facile Approach for Improving the Interfacial Adhesion of Nanofiber Air Electrodes of Reversible Solid Oxide Cells

Chen

Jiang

Yue

et al. 2023

ACS Appl. Mater. Interfaces

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“…Although this work overviews the last trends in LODPs, a number of recent publications fell within the reviewing procedure. In our opinion, these works [ 205 , 206 , 207 , 208 , 209 , 210 , 211 ] should be mentioned with no detailed analysis.…”

Section: Discussionmentioning

confidence: 99%

Layered Oxygen-Deficient Double Perovskites as Promising Cathode Materials for Solid Oxide Fuel Cells

et al. 2021

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Development of new functional materials with improved characteristics for solid oxide fuel cells (SOFCs) and solid oxide electrolysis cells (SOECs) is one of the most important tasks of modern materials science. High electrocatalytic activity in oxygen reduction reactions (ORR), chemical and thermomechanical compatibility with solid electrolytes, as well as stability at elevated temperatures are the most important requirements for cathode materials utilized in SOFCs. Layered oxygen-deficient double perovskites possess the complex of the above-mentioned properties, being one of the most promising cathode materials operating at intermediate temperatures. The present review summarizes the data available in the literature concerning crystal structure, thermal, electrotransport-related, and other functional properties (including electrochemical performance in ORR) of these materials. The main emphasis is placed on the state-of-art approaches toimproving the functional characteristics of these complex oxides.

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“…One of the most promising approaches to achieve the reduction of the polarization resistances at the electrodes is to fabricate nanostructured electrodes with enlarged reaction sites and facilitated reaction kinetics, which can considerably reduce the operating temperature, while maintaining the electrochemical performance [11][12][13]. Recently, nanofiber-based electrodes have been fabricated by precursor-based electrospinning for expanded sites for the oxygen reduction reaction (ORR), demonstrating substantially higher peak power densities compared to powder-based electrodes [14][15][16][17][18]. Defect engineering, which controls the concentration and distribution of the charged defects, is another important approach that can significantly lower the activation energy for ORR, enabling the effective operation at IT range (<700 °C) [19,20].…”

Section: Introductionmentioning

confidence: 99%

Infiltrated Nanofiber-Based Nanostructured Electrodes for Solid Oxide Fuel Cells

Kim

Choi

Mun

et al. 2023

International Journal of Energy Research

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The feasibility and opportunity of nanostructured and defect-engineered electrodes for exceptional performance and stability of solid oxide fuel cells operating at intermediate temperatures (500–700°C) are reported in this study. The electrode is designed with infiltrated La0.4Sr0.6MnO3-δ (LSM) nanoparticles as oxygen reduction reaction catalysts on an yttria-stabilized zirconia (YSZ) nanofiber scaffold with a controlled sintering temperature of 800–1200°C for optimized nanostructures and defect concentration of the nanofiber scaffold. Nanostructured electrode with the lowest sintering temperature of 800°C exhibits ~8.1 times higher specific surface area and ~1.6 times higher oxygen vacancy concentration than that with a sintering temperature of 1200°C. The cell with a sintering temperature of 800°C demonstrates an outstanding performance of ~2.11 and 1.09 W/cm2 at 700 and 600°C, respectively, with excellent stability for 300 h under the current density of 1.5 A/cm2 at 750°C.

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Praseodymium based double-perovskite cathode nanofibers for intermediate temperature solid oxide fuel cells (IT-SOFC)

Cited by 30 publications

References 41 publications

Facile Approach for Improving the Interfacial Adhesion of Nanofiber Air Electrodes of Reversible Solid Oxide Cells

Facile Approach for Improving the Interfacial Adhesion of Nanofiber Air Electrodes of Reversible Solid Oxide Cells

Layered Oxygen-Deficient Double Perovskites as Promising Cathode Materials for Solid Oxide Fuel Cells

Infiltrated Nanofiber-Based Nanostructured Electrodes for Solid Oxide Fuel Cells

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