Ying Zhang , Yibei Wang , Zhilin Liu , Yaowen Wang , Zhen Wang , Youcheng Xiao , Bingbing Niu , Xiyang Wang , Guntae Kim , Wenquan Wang , Tianmin He
{"title":"采用离子路易斯酸强度极化分布策略设计双陶瓷电池空气电极","authors":"Ying Zhang , Yibei Wang , Zhilin Liu , Yaowen Wang , Zhen Wang , Youcheng Xiao , Bingbing Niu , Xiyang Wang , Guntae Kim , Wenquan Wang , Tianmin He","doi":"10.1016/j.jechem.2025.08.069","DOIUrl":null,"url":null,"abstract":"<div><div>Ceramic cells promise ideal energy conversion and storage devices, making the development of efficient and robust air electrodes crucial for their application. In this study, a 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>Nb<sub>0.1</sub>O<sub>3−</sub><em><sub>δ</sub></em> (BSCCFN) air electrode, based on Ba<sub>0.5</sub>Sr<sub>0.5</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O<sub>3−</sub><em><sub>δ</sub></em> (BSCF), is designed using a perovskite A-B-site ionic Lewis acid strength (ISA) polarization distribution strategy and is successfully applied in both oxygen-ion conducting solid oxide fuel cells (O-SOFCs) and proton-conducting reversible protonic ceramic cells (R-PCCs). When BSCCFN is used as the air electrode in O-SOFCs, a peak power density (PPD) of 1.45 W cm<sup>−2</sup> is achieved at 650 °C, whereas in R-PCCs, a PPD of 1.13 W cm<sup>−2</sup> and a current density of −1.8 A cm<sup>−2</sup> at 1.3 V are achieved at the same temperature and show stable reversibility over 100 h. Experimental measurements and theoretical calculations demonstrate that low-ISA Cs<sup>+</sup> doping accelerates the reaction kinetics of both oxygen ions and protons, while high-ISA Nb<sup>5+</sup> doping enhances electrode stability. The synergistic effect of Cs<sup>+</sup> and Nb<sup>5+</sup> co-doping in the BSCCFN electrode lies in the ISA polarization distribution, which weakens the Co/Fe–O bond covalency, thereby promoting oxygen vacancy formation and facilitating the conduction of oxygen ions and protons.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 505-516"},"PeriodicalIF":14.9000,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Designing an air electrode for dual ceramic cells using an ionic Lewis acid strength polarization distribution strategy\",\"authors\":\"Ying Zhang , Yibei Wang , Zhilin Liu , Yaowen Wang , Zhen Wang , Youcheng Xiao , Bingbing Niu , Xiyang Wang , Guntae Kim , Wenquan Wang , Tianmin He\",\"doi\":\"10.1016/j.jechem.2025.08.069\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Ceramic cells promise ideal energy conversion and storage devices, making the development of efficient and robust air electrodes crucial for their application. In this study, a 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>Nb<sub>0.1</sub>O<sub>3−</sub><em><sub>δ</sub></em> (BSCCFN) air electrode, based on Ba<sub>0.5</sub>Sr<sub>0.5</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O<sub>3−</sub><em><sub>δ</sub></em> (BSCF), is designed using a perovskite A-B-site ionic Lewis acid strength (ISA) polarization distribution strategy and is successfully applied in both oxygen-ion conducting solid oxide fuel cells (O-SOFCs) and proton-conducting reversible protonic ceramic cells (R-PCCs). When BSCCFN is used as the air electrode in O-SOFCs, a peak power density (PPD) of 1.45 W cm<sup>−2</sup> is achieved at 650 °C, whereas in R-PCCs, a PPD of 1.13 W cm<sup>−2</sup> and a current density of −1.8 A cm<sup>−2</sup> at 1.3 V are achieved at the same temperature and show stable reversibility over 100 h. Experimental measurements and theoretical calculations demonstrate that low-ISA Cs<sup>+</sup> doping accelerates the reaction kinetics of both oxygen ions and protons, while high-ISA Nb<sup>5+</sup> doping enhances electrode stability. The synergistic effect of Cs<sup>+</sup> and Nb<sup>5+</sup> co-doping in the BSCCFN electrode lies in the ISA polarization distribution, which weakens the Co/Fe–O bond covalency, thereby promoting oxygen vacancy formation and facilitating the conduction of oxygen ions and protons.</div></div>\",\"PeriodicalId\":15728,\"journal\":{\"name\":\"Journal of Energy Chemistry\",\"volume\":\"112 \",\"pages\":\"Pages 505-516\"},\"PeriodicalIF\":14.9000,\"publicationDate\":\"2025-09-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Energy Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2095495625007296\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Energy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Energy Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2095495625007296","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Energy","Score":null,"Total":0}
Designing an air electrode for dual ceramic cells using an ionic Lewis acid strength polarization distribution strategy
Ceramic cells promise ideal energy conversion and storage devices, making the development of efficient and robust air electrodes crucial for their application. In this study, a Ba0.4Sr0.5Cs0.1Co0.7Fe0.2Nb0.1O3−δ (BSCCFN) air electrode, based on Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF), is designed using a perovskite A-B-site ionic Lewis acid strength (ISA) polarization distribution strategy and is successfully applied in both oxygen-ion conducting solid oxide fuel cells (O-SOFCs) and proton-conducting reversible protonic ceramic cells (R-PCCs). When BSCCFN is used as the air electrode in O-SOFCs, a peak power density (PPD) of 1.45 W cm−2 is achieved at 650 °C, whereas in R-PCCs, a PPD of 1.13 W cm−2 and a current density of −1.8 A cm−2 at 1.3 V are achieved at the same temperature and show stable reversibility over 100 h. Experimental measurements and theoretical calculations demonstrate that low-ISA Cs+ doping accelerates the reaction kinetics of both oxygen ions and protons, while high-ISA Nb5+ doping enhances electrode stability. The synergistic effect of Cs+ and Nb5+ co-doping in the BSCCFN electrode lies in the ISA polarization distribution, which weakens the Co/Fe–O bond covalency, thereby promoting oxygen vacancy formation and facilitating the conduction of oxygen ions and protons.
期刊介绍:
The Journal of Energy Chemistry, the official publication of Science Press and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, serves as a platform for reporting creative research and innovative applications in energy chemistry. It mainly reports on creative researches and innovative applications of chemical conversions of fossil energy, carbon dioxide, electrochemical energy and hydrogen energy, as well as the conversions of biomass and solar energy related with chemical issues to promote academic exchanges in the field of energy chemistry and to accelerate the exploration, research and development of energy science and technologies.
This journal focuses on original research papers covering various topics within energy chemistry worldwide, including:
Optimized utilization of fossil energy
Hydrogen energy
Conversion and storage of electrochemical energy
Capture, storage, and chemical conversion of carbon dioxide
Materials and nanotechnologies for energy conversion and storage
Chemistry in biomass conversion
Chemistry in the utilization of solar energy