{"title":"协同a位补偿和氧空位工程提高质子陶瓷燃料电池的高熵电解质性能","authors":"Xiaolin Xiang, Junmeng Jing*, Haoran Wang, Xiang Wang, Min Li, Fuli Wang, Jiawei Chen, Yuyang Guo, Linfeng He, Hailei Zhao and Zhibin Yang*, ","doi":"10.1021/acs.nanolett.5c0033010.1021/acs.nanolett.5c00330","DOIUrl":null,"url":null,"abstract":"<p >Protonic ceramic fuel cells (PCFCs) are clean, highly efficient energy conversion devices with the electrolyte serving as the central component determining their performance and durability. The primary challenge for PCFCs lies in designing proton-conducting electrolytes that are both efficient and stable under extreme environments, such as exposure to moisture and acidic gases (e.g., CO<sub>2</sub> and SO<sub>2</sub>). We developed a high-entropy perovskite oxide (HEPO) Ba<sub>1.05</sub>Ce<sub>0.45</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>Yb<sub>0.1</sub>Pr<sub>0.10</sub>Gd<sub>0.15</sub>O<sub>3−δ</sub> (Ba<sub>1.05</sub>Ce<sub>0.45</sub>ZYYbPr<sub>0.10</sub>Gd<sub>0.15</sub>) via synergistic A-site stoichiometric compensation and oxygen vacancy engineering, achieving reduced sintering temperatures while suppressing Ba loss. The material exhibited a conductivity of 8.9 mS cm<sup>–1</sup> at 600 °C in wet air (3% H<sub>2</sub>O). Anode-supported single cells with HEPO electrolytes demonstrated an exceptional electrochemical performance of 397 mW cm<sup>–2</sup> at 600 °C, outperforming non-HEPO electrolytes. Electrochemical impedance spectroscopy and stability tests confirm the good chemical stability and phase structure stability of Ba<sub>1.05</sub>Ce<sub>0.45</sub>ZYYbPr<sub>0.10</sub>Gd<sub>0.15</sub> under different atmospheres. These results demonstrate the possibility and feasibility of HEPO electrolyte materials in PCFC.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 21","pages":"8464–8472 8464–8472"},"PeriodicalIF":9.1000,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synergistic A-Site Compensation and Oxygen Vacancy Engineering Boost High-Entropy Electrolyte Performance in Protonic Ceramic Fuel Cells\",\"authors\":\"Xiaolin Xiang, Junmeng Jing*, Haoran Wang, Xiang Wang, Min Li, Fuli Wang, Jiawei Chen, Yuyang Guo, Linfeng He, Hailei Zhao and Zhibin Yang*, \",\"doi\":\"10.1021/acs.nanolett.5c0033010.1021/acs.nanolett.5c00330\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Protonic ceramic fuel cells (PCFCs) are clean, highly efficient energy conversion devices with the electrolyte serving as the central component determining their performance and durability. The primary challenge for PCFCs lies in designing proton-conducting electrolytes that are both efficient and stable under extreme environments, such as exposure to moisture and acidic gases (e.g., CO<sub>2</sub> and SO<sub>2</sub>). We developed a high-entropy perovskite oxide (HEPO) Ba<sub>1.05</sub>Ce<sub>0.45</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>Yb<sub>0.1</sub>Pr<sub>0.10</sub>Gd<sub>0.15</sub>O<sub>3−δ</sub> (Ba<sub>1.05</sub>Ce<sub>0.45</sub>ZYYbPr<sub>0.10</sub>Gd<sub>0.15</sub>) via synergistic A-site stoichiometric compensation and oxygen vacancy engineering, achieving reduced sintering temperatures while suppressing Ba loss. The material exhibited a conductivity of 8.9 mS cm<sup>–1</sup> at 600 °C in wet air (3% H<sub>2</sub>O). Anode-supported single cells with HEPO electrolytes demonstrated an exceptional electrochemical performance of 397 mW cm<sup>–2</sup> at 600 °C, outperforming non-HEPO electrolytes. Electrochemical impedance spectroscopy and stability tests confirm the good chemical stability and phase structure stability of Ba<sub>1.05</sub>Ce<sub>0.45</sub>ZYYbPr<sub>0.10</sub>Gd<sub>0.15</sub> under different atmospheres. These results demonstrate the possibility and feasibility of HEPO electrolyte materials in PCFC.</p>\",\"PeriodicalId\":53,\"journal\":{\"name\":\"Nano Letters\",\"volume\":\"25 21\",\"pages\":\"8464–8472 8464–8472\"},\"PeriodicalIF\":9.1000,\"publicationDate\":\"2025-05-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nano Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.nanolett.5c00330\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.nanolett.5c00330","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
质子陶瓷燃料电池（pcfc）是一种清洁、高效的能量转换装置，电解质是决定其性能和耐用性的核心成分。pcfc的主要挑战在于设计在极端环境下既高效又稳定的质子导电电解质，例如暴露于潮湿和酸性气体（例如CO2和SO2）。通过协同a位化学补偿和氧空位工程，制备了一种高熵钙钛矿氧化物（HEPO） Ba1.05Ce0.45Zr0.1Y0.1Yb0.1Pr0.10Gd0.15O3−δ (Ba1.05Ce0.45ZYYbPr0.10Gd0.15)，在降低烧结温度的同时抑制了Ba的损失。该材料在600°C湿空气（3% H2O）中的电导率为8.9 mS cm-1。使用HEPO电解质的阳极支撑单体电池在600°C时的电化学性能为397 mW cm-2，优于非HEPO电解质。电化学阻抗谱和稳定性测试证实了Ba1.05Ce0.45ZYYbPr0.10Gd0.15在不同气氛下具有良好的化学稳定性和相结构稳定性。这些结果证明了HEPO电解质材料应用于PCFC的可能性和可行性。
Synergistic A-Site Compensation and Oxygen Vacancy Engineering Boost High-Entropy Electrolyte Performance in Protonic Ceramic Fuel Cells
Protonic ceramic fuel cells (PCFCs) are clean, highly efficient energy conversion devices with the electrolyte serving as the central component determining their performance and durability. The primary challenge for PCFCs lies in designing proton-conducting electrolytes that are both efficient and stable under extreme environments, such as exposure to moisture and acidic gases (e.g., CO2 and SO2). We developed a high-entropy perovskite oxide (HEPO) Ba1.05Ce0.45Zr0.1Y0.1Yb0.1Pr0.10Gd0.15O3−δ (Ba1.05Ce0.45ZYYbPr0.10Gd0.15) via synergistic A-site stoichiometric compensation and oxygen vacancy engineering, achieving reduced sintering temperatures while suppressing Ba loss. The material exhibited a conductivity of 8.9 mS cm–1 at 600 °C in wet air (3% H2O). Anode-supported single cells with HEPO electrolytes demonstrated an exceptional electrochemical performance of 397 mW cm–2 at 600 °C, outperforming non-HEPO electrolytes. Electrochemical impedance spectroscopy and stability tests confirm the good chemical stability and phase structure stability of Ba1.05Ce0.45ZYYbPr0.10Gd0.15 under different atmospheres. These results demonstrate the possibility and feasibility of HEPO electrolyte materials in PCFC.
期刊介绍：
Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including:
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- Applications of nanoscale materials in living and environmental systems
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