B-site doping effect of double perovskite for cathodes of solid oxide fuel cells
BackgroundThe performance of solid oxide fuel cells (SOFCs) can be promoted by optimizing cathode materials.PurposeThis study aims to boost the electrochemical performances of cathodes for SOFCs by doping transition metal at the B-site of double perovskite.MethodsFirstly, a series of B-site doped Pr...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | zho |
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Science Press
2023-06-01
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| Series: | He jishu |
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| Online Access: | http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2023.hjs.46.060502&lang=zh |
| _version_ | 1797803707437416448 |
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| author | LEI Jinyong HUANG Xurui CUI Jingzeng XIA Ziting ZHU Jianqiu PAN Jun YANG Yiping YU Fengyuan LIAO Zihao WANG Jianqiang ZHANG Yuxuan ZHANG Linjuan |
| author_facet | LEI Jinyong HUANG Xurui CUI Jingzeng XIA Ziting ZHU Jianqiu PAN Jun YANG Yiping YU Fengyuan LIAO Zihao WANG Jianqiang ZHANG Yuxuan ZHANG Linjuan |
| author_sort | LEI Jinyong |
| collection | DOAJ |
| description | BackgroundThe performance of solid oxide fuel cells (SOFCs) can be promoted by optimizing cathode materials.PurposeThis study aims to boost the electrochemical performances of cathodes for SOFCs by doping transition metal at the B-site of double perovskite.MethodsFirstly, a series of B-site doped PrBa0.8Ca0.2Co2O5+δ (PBCC) oxides as cathodes for SOFCs were prepared by sol-gel. The effects of B-site doped content and doped elements on the crystalline structure of the cathodes were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). Then, the trends of conductivity and thermal expansion coefficient with B-site doped PBCC oxides were investigated. Finally, the electrochemical performances of cathodes with different B-site doped PBCC oxides were tested to find optimal doping element type and content.ResultsTest results show that polarization is reduced and the electrochemical catalytic activity is improved when 5 mol% of Fe is doped on the B-site of the PBCC cathode. Compared to the PBCC cathode, the max power density of the full cell with a 5-mol% Fe-doped cathode increases from 988 mW∙cm-2 to 1 259 mW∙cm-2 at 700 ℃.ConclusionsThe electrochemical performances of SOFCs can be boosted by modifying the B-site of double perovskite using transition metal. |
| first_indexed | 2024-03-13T05:24:58Z |
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| institution | Directory Open Access Journal |
| issn | 0253-3219 |
| language | zho |
| last_indexed | 2024-03-13T05:24:58Z |
| publishDate | 2023-06-01 |
| publisher | Science Press |
| record_format | Article |
| series | He jishu |
| spelling | doaj.art-129dd8bcc69340f4a575b96037c1dc9d2023-06-15T07:41:47ZzhoScience PressHe jishu0253-32192023-06-0146606050206050210.11889/j.0253-3219.2023.hjs.46.0605020253-3219（2023）06-0068-09B-site doping effect of double perovskite for cathodes of solid oxide fuel cellsLEI Jinyong0HUANG Xurui1CUI Jingzeng2XIA Ziting3ZHU Jianqiu4PAN Jun5YANG Yiping6YU Fengyuan7LIAO Zihao8WANG Jianqiang9ZHANG Yuxuan10ZHANG Linjuan11Guangzhou Power Supply Bureau of Guangdong Power Grid Co., Ltd., Guangzhou 510600, ChinaGuangzhou Power Supply Bureau of Guangdong Power Grid Co., Ltd., Guangzhou 510600, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaGuangzhou Power Supply Bureau of Guangdong Power Grid Co., Ltd., Guangzhou 510600, ChinaGuangzhou Power Supply Bureau of Guangdong Power Grid Co., Ltd., Guangzhou 510600, ChinaGuangzhou Power Supply Bureau of Guangdong Power Grid Co., Ltd., Guangzhou 510600, ChinaGuangzhou Power Supply Bureau of Guangdong Power Grid Co., Ltd., Guangzhou 510600, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaBackgroundThe performance of solid oxide fuel cells (SOFCs) can be promoted by optimizing cathode materials.PurposeThis study aims to boost the electrochemical performances of cathodes for SOFCs by doping transition metal at the B-site of double perovskite.MethodsFirstly, a series of B-site doped PrBa0.8Ca0.2Co2O5+δ (PBCC) oxides as cathodes for SOFCs were prepared by sol-gel. The effects of B-site doped content and doped elements on the crystalline structure of the cathodes were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). Then, the trends of conductivity and thermal expansion coefficient with B-site doped PBCC oxides were investigated. Finally, the electrochemical performances of cathodes with different B-site doped PBCC oxides were tested to find optimal doping element type and content.ResultsTest results show that polarization is reduced and the electrochemical catalytic activity is improved when 5 mol% of Fe is doped on the B-site of the PBCC cathode. Compared to the PBCC cathode, the max power density of the full cell with a 5-mol% Fe-doped cathode increases from 988 mW∙cm-2 to 1 259 mW∙cm-2 at 700 ℃.ConclusionsThe electrochemical performances of SOFCs can be boosted by modifying the B-site of double perovskite using transition metal.http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2023.hjs.46.060502&lang=zhsolid oxide fuel cellcathodedouble perovskiteb-site doping |
| spellingShingle | LEI Jinyong HUANG Xurui CUI Jingzeng XIA Ziting ZHU Jianqiu PAN Jun YANG Yiping YU Fengyuan LIAO Zihao WANG Jianqiang ZHANG Yuxuan ZHANG Linjuan B-site doping effect of double perovskite for cathodes of solid oxide fuel cells He jishu solid oxide fuel cell cathode double perovskite b-site doping |
| title | B-site doping effect of double perovskite for cathodes of solid oxide fuel cells |
| title_full | B-site doping effect of double perovskite for cathodes of solid oxide fuel cells |
| title_fullStr | B-site doping effect of double perovskite for cathodes of solid oxide fuel cells |
| title_full_unstemmed | B-site doping effect of double perovskite for cathodes of solid oxide fuel cells |
| title_short | B-site doping effect of double perovskite for cathodes of solid oxide fuel cells |
| title_sort | b site doping effect of double perovskite for cathodes of solid oxide fuel cells |
| topic | solid oxide fuel cell cathode double perovskite b-site doping |
| url | http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2023.hjs.46.060502&lang=zh |
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