{"title":"通过协同优化体相和表面相构建坚固高效的陶瓷电池空气电极","authors":"Ying Zhang, Yibei Wang, Zhilin Liu, Zhen Wang, Yaowen Wang, Youcheng Xiao, Bingbing Niu, Xiyang Wang, Wenquan Wang, Tianmin He","doi":"10.1002/adfm.202422531","DOIUrl":null,"url":null,"abstract":"Slow reaction kinetics of air electrodes is a common problem faced by low-temperature (<650 °C) oxygen-ion conducting solid oxide fuel cells (O-SOFCs) and proton-conducting reversible proton ceramic cells (R-PCCs). Here, an innovative approach is proposed to design and prepare two efficient and durable Ba<sub>0.5</sub>Sr<sub>0.5</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O<sub>3−δ</sub> (BSCF)-based nanocomposites through self-reconstruction strategy, which aim to optimize both the bulk and surface properties of electrode materials simultaneously. Specifically, the two nanocomposites with a nominal composition of Ba<sub>0.4</sub>Sr<sub>0.5</sub>Cs<sub>0.1</sub>Co<sub>0.7</sub>Fe<sub>0.2</sub>M<sub>0.1</sub>O<sub>3−δ</sub> (M═Ni, Zr) consisted of the major perovskite phase and surface-enriched NiO and BaZrO<sub>3</sub> minor phases. When Ba<sub>0.4</sub>Sr<sub>0.5</sub>Cs<sub>0.1</sub>Co<sub>0.7</sub>Fe<sub>0.2</sub>Ni<sub>0.1</sub>O<sub>3−δ</sub> (BSCsCFNi) is used as an air electrode in O-SOFCs, the peak power density is 1.36 W cm<sup>−2</sup> at 650 °C; while Ba<sub>0.4</sub>Sr<sub>0.5</sub>Cs<sub>0.1</sub>Co<sub>0.7</sub>Fe<sub>0.2</sub>Zr<sub>0.1</sub>O<sub>3−δ</sub> (BSCsCFZr) is used in R-PCCs, a peak power density of 1.24 W cm<sup>−2</sup> and a current density of −1.98 A cm<sup>−2</sup> (1.3 V) are achieved at 650 °C, and exhibits stable reversibility over 100 h. Theoretical calculations and experiments indicate that Cs<sup>+</sup> doping enhances the bulk conduction of oxygen ions and protons; NiO nanoparticles enhance oxygen adsorption and surface exchange; BaZrO<sub>3</sub> nanoparticles increase steam adsorption and hydration capacity. This study provides a new idea for designing efficient and durable air electrodes of ceramic cells.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"21 1","pages":""},"PeriodicalIF":18.5000,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Constructing Robust and Efficient Ceramic Cells Air Electrodes Through Collaborative Optimization Bulk and Surface Phases\",\"authors\":\"Ying Zhang, Yibei Wang, Zhilin Liu, Zhen Wang, Yaowen Wang, Youcheng Xiao, Bingbing Niu, Xiyang Wang, Wenquan Wang, Tianmin He\",\"doi\":\"10.1002/adfm.202422531\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Slow reaction kinetics of air electrodes is a common problem faced by low-temperature (<650 °C) oxygen-ion conducting solid oxide fuel cells (O-SOFCs) and proton-conducting reversible proton ceramic cells (R-PCCs). Here, an innovative approach is proposed to design and prepare two efficient and durable Ba<sub>0.5</sub>Sr<sub>0.5</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O<sub>3−δ</sub> (BSCF)-based nanocomposites through self-reconstruction strategy, which aim to optimize both the bulk and surface properties of electrode materials simultaneously. Specifically, the two nanocomposites with a nominal composition of Ba<sub>0.4</sub>Sr<sub>0.5</sub>Cs<sub>0.1</sub>Co<sub>0.7</sub>Fe<sub>0.2</sub>M<sub>0.1</sub>O<sub>3−δ</sub> (M═Ni, Zr) consisted of the major perovskite phase and surface-enriched NiO and BaZrO<sub>3</sub> minor phases. When Ba<sub>0.4</sub>Sr<sub>0.5</sub>Cs<sub>0.1</sub>Co<sub>0.7</sub>Fe<sub>0.2</sub>Ni<sub>0.1</sub>O<sub>3−δ</sub> (BSCsCFNi) is used as an air electrode in O-SOFCs, the peak power density is 1.36 W cm<sup>−2</sup> at 650 °C; while Ba<sub>0.4</sub>Sr<sub>0.5</sub>Cs<sub>0.1</sub>Co<sub>0.7</sub>Fe<sub>0.2</sub>Zr<sub>0.1</sub>O<sub>3−δ</sub> (BSCsCFZr) is used in R-PCCs, a peak power density of 1.24 W cm<sup>−2</sup> and a current density of −1.98 A cm<sup>−2</sup> (1.3 V) are achieved at 650 °C, and exhibits stable reversibility over 100 h. Theoretical calculations and experiments indicate that Cs<sup>+</sup> doping enhances the bulk conduction of oxygen ions and protons; NiO nanoparticles enhance oxygen adsorption and surface exchange; BaZrO<sub>3</sub> nanoparticles increase steam adsorption and hydration capacity. 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引用次数: 0
摘要
空气电极反应动力学慢是低温(<650°C)氧离子导电固体氧化物燃料电池(O-SOFCs)和质子导电可逆质子陶瓷电池(R-PCCs)面临的共同问题。本文提出了一种创新的方法,通过自重构策略设计和制备两种高效耐用的ba0.5 sr0.5 co0.8 fe0.3 2o3−δ (BSCF)基纳米复合材料,旨在同时优化电极材料的体积和表面性能。具体来说,这两种纳米复合材料的标称组成为Ba0.4Sr0.5Cs0.1Co0.7Fe0.2M0.1O3−δ (M = Ni, Zr),主要由钙钛矿相和表面富集的NiO和BaZrO3小相组成。以Ba0.4Sr0.5Cs0.1Co0.7Fe0.2Ni0.1O3−δ (BSCsCFNi)作为空气电极制备o - sofc时,650℃时的峰值功率密度为1.36 W cm−2;使用Ba0.4Sr0.5Cs0.1Co0.7Fe0.2Zr0.1O3−δ (BSCsCFZr)的R-PCCs在650℃下可获得1.24 W cm−2的峰值功率密度和- 1.98 a cm−2 (1.3 V)的电流密度,且在100 h内具有稳定的可逆性。理论计算和实验表明,Cs+的掺杂增强了氧离子和质子的体传导;纳米NiO增强氧吸附和表面交换;BaZrO3纳米颗粒提高了蒸汽吸附和水化能力。该研究为设计高效耐用的陶瓷电池空气电极提供了新的思路。
Constructing Robust and Efficient Ceramic Cells Air Electrodes Through Collaborative Optimization Bulk and Surface Phases
Slow reaction kinetics of air electrodes is a common problem faced by low-temperature (<650 °C) oxygen-ion conducting solid oxide fuel cells (O-SOFCs) and proton-conducting reversible proton ceramic cells (R-PCCs). Here, an innovative approach is proposed to design and prepare two efficient and durable Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF)-based nanocomposites through self-reconstruction strategy, which aim to optimize both the bulk and surface properties of electrode materials simultaneously. Specifically, the two nanocomposites with a nominal composition of Ba0.4Sr0.5Cs0.1Co0.7Fe0.2M0.1O3−δ (M═Ni, Zr) consisted of the major perovskite phase and surface-enriched NiO and BaZrO3 minor phases. When Ba0.4Sr0.5Cs0.1Co0.7Fe0.2Ni0.1O3−δ (BSCsCFNi) is used as an air electrode in O-SOFCs, the peak power density is 1.36 W cm−2 at 650 °C; while Ba0.4Sr0.5Cs0.1Co0.7Fe0.2Zr0.1O3−δ (BSCsCFZr) is used in R-PCCs, a peak power density of 1.24 W cm−2 and a current density of −1.98 A cm−2 (1.3 V) are achieved at 650 °C, and exhibits stable reversibility over 100 h. Theoretical calculations and experiments indicate that Cs+ doping enhances the bulk conduction of oxygen ions and protons; NiO nanoparticles enhance oxygen adsorption and surface exchange; BaZrO3 nanoparticles increase steam adsorption and hydration capacity. This study provides a new idea for designing efficient and durable air electrodes of ceramic cells.
期刊介绍:
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