High‐Entropy Driven Self‐Assembled Dual‐phase Composite Air Electrodes with Enhanced Performance and Stability for Reversible Protonic Ceramic Cells

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

Abstract Reversible proton ceramic cells (R‐PCCs) offer a transformative solution for dual functionality in power generation and energy storage. However, their potential is currently obstacles by the lack of high‐performance air electrodes combining high electrocatalytic activity with durability. Here, an innovative electrode composed high‐entropy driven self‐assembled xNiO‐Pr 0.2 La Ba Sr Ca Fe 0.8 Ni 0.2−x O 3−δ (N‐XFN) composites presented, which result from unique lattice distortion effects inherent perovskites. The experimental results coupled density functional theory (DFT) calculations verify that at A‐site significantly induces NiO nanoparticles exsolved B‐site, promoting formation biphasic composite structure dramatically increases electrochemical active sites. Remarkably, R‐PCCs using N‐XFN achieve impressive peak 1.30 W cm −2 fuel cell mode current ‐2.52 A 1.3 V electrolysis 650 °C. In addition, show excellent stability reversibility over 830 h, including 500 h 330 reversible operation This research provides important insights into design perovskites, paving way advanced technology.

Language: Английский

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Vanadium-assisted surface engineering of heterostructured cathode for enhanced protonic ceramic fuel cell performance

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159722 - 159722

Published: Jan. 1, 2025

Language: Английский

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Rationally Designed Air Electrode Boosting Electrochemical Performance of Protonic Ceramic Cells

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract Protonic ceramic cells (PCCs) have gained significant attention as a promising electrochemical device for hydrogen production and power generation at intermediate temperatures. However, the lack of high‐performance air electrodes, specifically in terms proton conduction ability, has severely hindered improvement performances PCCs. In this study, high‐efficiency electrode La 0.8 Ba 0.2 CoO 3 (LBC) is rationally designed researched by machine‐learning model density functional theory (DFT) calculation, which boosts Specifically, an elements‐property map designing oxides created predicting studying uptake ability 1– x A′ BO (A′ = Na, K, Ca, Mg, Ba, Cu, etc.) eXtreme Gradient Boosting model. PCC with LBC yields high current destiny electrolysis mode (1.72 A cm −2 600 °C) fuel cell (1.00 W °C). addition, ultra‐low reaction resistance (0.03 Ω 2 achieved, because can significantly facilitate formation O * . This work not only reports effective but also presents new avenue rational design electrodes

Language: Английский

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Evolution and Reconstruction of Air‐Electrode Surface Composition in Reversible Protonic Ceramic Cells: Mechanisms, Impacts on Catalytic Performance, and Optimization Strategies – A Review

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Abstract Reversible protonic ceramic cells (R‐PCCs) are at the forefront of electrochemical conversion devices, capable reversibly and efficiently converting chemical energy into electricity intermediate temperatures (350–700 °C) with zero carbon emissions. However, slow surface catalytic reactions air‐electrode often hinder their performance durability. The electrode is not merely an extension bulk structure, equilibrium reconstruction can lead to significantly different crystal‐plane terminations morphologies, which influenced by material's intrinsic properties external reaction conditions. Understanding evolution elevated in water‐containing, oxidative atmospheres presents significant importance. In this review, a comprehensive summary recent processes applying advanced characterization techniques for high‐temperature surfaces provided, exploring correlations between fluctuations examining structural various associated degradation activation phenomena, offering insights impact on performance. Furthermore, reported strategies advances enhancing R‐PCCs through engineering discussed. This review offers valuable expected guide future developments catalysis, solid‐state ionics, materials.

Language: Английский

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Exploring hydration of air electrodes for protonic ceramic cells: a review

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160759 - 160759

Published: Feb. 1, 2025

Language: Английский

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Advancements and prospects of perovskite-based fuel electrodes in solid oxide cells for CO₂ electrolysis to CO

Chemical Science, Journal Year: 2024, Volume and Issue: 15(29), P. 11166 - 11187

Published: Jan. 1, 2024

Developments and prospects for solid oxide cells using a perovskite-based fuel electrode CO 2 electrolysis to CO.

Language: Английский

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Enhancing performance of lower-temperature solid oxide fuel cell cathodes through surface engineering: A review

Progress in Materials Science, Journal Year: 2024, Volume and Issue: 147, P. 101353 - 101353

Published: Aug. 13, 2024

Language: Английский

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Self-optimized and stable nanocomposites via one-pot synthesis for high-temperature CO2 electrolysis in solid oxide electrolysis cells

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 602, P. 234277 - 234277

Published: March 17, 2024

Language: Английский

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Tailoring SrFeO3 cathode with Ta and F allows high performance for proton-conducting solid oxide fuel cells

Sustainable materials and technologies, Journal Year: 2024, Volume and Issue: 41, P. e01104 - e01104

Published: Sept. 1, 2024

Language: Английский

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Three‐dimensional Quantitative Evaluation of Interfacial Mass Transfer for Performance Enhanced and Durable Large‐scale Reversible Protonic Ceramic Cells

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Abstract Reversible protonic ceramic cells (R‐PCCs) hold significant promise for energy storage and conversion. However, achieving high‐performance, large‐scale remains challenging, primarily due to issues with compatibility adhesion at the electrode‐electrolyte interface. Here, a scalable strategy is presented regulating an active interface structure (AIS) via tape casting develop durable R‐PCCs. The AIS, located between BaZr₀.₁Ce₀.₇Y₀.₁Yb₀.₁O₃‐δ (BZCYYb) electrolyte Ni‐BZCYYb anode, systematically analyzed its impact on electrochemical performance. Cells 20 µm AIS (20AIS) achieve peak power densities of 1.50 W cm⁻ 2 current − 1.66 A cm 650 °C, outperforming conventional without (0AIS) by ≈50%. stable reversible operation maintained over 200 h. FIB‐SEM 3D reconstruction reveal that 20AIS sample exhibits 65.7% increase in triple‐phase boundary length, despite reduced pore counts affecting gas transport, optimizing balance TPB length transport resistance. Furthermore, scalability this approach demonstrated fabricating 10 × cells, meeting industry standards reinforcing method's commercial viability. These findings highlight practical pathway advancing R ‐ PCC technology toward industrial applications.

Language: Английский

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