Study on the Effect of A/B Site Co-Doping on the Oxygen Evolution Reaction Performance of Strontium Cobaltite
The perovskite oxide SrCoO<sub>3−x</sub> is a promising oxygen electrocatalyst for renewable energy storage and conversion technologies. Here, A, B-site Co-doped perovskite Sr<sub>0.5</sub>Ba<sub>0.5</sub>Co<sub>0.95</sub>Mn<sub>0.05</sub>O...
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MDPI AG
2022-06-01
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| Online Access: | https://www.mdpi.com/2075-4701/12/6/991 |
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| author | Shihao Song Xiaoming Mu Yanwei Ren Jia Guo Haifei Wei Heyan Liu Zunming Lu |
| author_facet | Shihao Song Xiaoming Mu Yanwei Ren Jia Guo Haifei Wei Heyan Liu Zunming Lu |
| author_sort | Shihao Song |
| collection | DOAJ |
| description | The perovskite oxide SrCoO<sub>3−x</sub> is a promising oxygen electrocatalyst for renewable energy storage and conversion technologies. Here, A, B-site Co-doped perovskite Sr<sub>0.5</sub>Ba<sub>0.5</sub>Co<sub>0.95</sub>Mn<sub>0.05</sub>O<sub>3−x</sub> nanoparticles were rationally designed and synthesized by the sol-gel method with an average size of 30–40 nm. It has a remarkable intrinsical activity and stability in 1 M KOH solution. Compared with other A-site (Sr<sub>a</sub>A<sub>1−a</sub>CoO<sub>3−x</sub> A=Ba, Ca) and B-site doped perovskite (SrCo<sub>b</sub>R<sub>1−b</sub>O<sub>3−x</sub> R=Mn, Fe, Ni, B) catalysts, Sr<sub>0.5</sub>Ba<sub>0.5</sub>Co<sub>0.95</sub>Mn<sub>0.05</sub>O<sub>3−x</sub> exhibits superior oxygen evolution reaction (OER) performance, smaller Tafel slope, and lower overpotential. The high electrochemical performance of Sr<sub>0.5</sub>Ba<sub>0.5</sub>Co<sub>0.95</sub>Mn<sub>0.05</sub>O<sub>3−x</sub> is attributed to its optimized crystal structure and the increase in the content of Co<sup>3+</sup>. This study demonstrates that highly symmetrical cubic perovskite structure catalytic displays better OER performance. |
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| language | English |
| last_indexed | 2024-03-09T23:03:10Z |
| publishDate | 2022-06-01 |
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| series | Metals |
| spelling | doaj.art-9f903a7837484c6282edbee30d7067b12023-11-23T17:58:28ZengMDPI AGMetals2075-47012022-06-0112699110.3390/met12060991Study on the Effect of A/B Site Co-Doping on the Oxygen Evolution Reaction Performance of Strontium CobaltiteShihao Song0Xiaoming Mu1Yanwei Ren2Jia Guo3Haifei Wei4Heyan Liu5Zunming Lu6School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, ChinaThe perovskite oxide SrCoO<sub>3−x</sub> is a promising oxygen electrocatalyst for renewable energy storage and conversion technologies. Here, A, B-site Co-doped perovskite Sr<sub>0.5</sub>Ba<sub>0.5</sub>Co<sub>0.95</sub>Mn<sub>0.05</sub>O<sub>3−x</sub> nanoparticles were rationally designed and synthesized by the sol-gel method with an average size of 30–40 nm. It has a remarkable intrinsical activity and stability in 1 M KOH solution. Compared with other A-site (Sr<sub>a</sub>A<sub>1−a</sub>CoO<sub>3−x</sub> A=Ba, Ca) and B-site doped perovskite (SrCo<sub>b</sub>R<sub>1−b</sub>O<sub>3−x</sub> R=Mn, Fe, Ni, B) catalysts, Sr<sub>0.5</sub>Ba<sub>0.5</sub>Co<sub>0.95</sub>Mn<sub>0.05</sub>O<sub>3−x</sub> exhibits superior oxygen evolution reaction (OER) performance, smaller Tafel slope, and lower overpotential. The high electrochemical performance of Sr<sub>0.5</sub>Ba<sub>0.5</sub>Co<sub>0.95</sub>Mn<sub>0.05</sub>O<sub>3−x</sub> is attributed to its optimized crystal structure and the increase in the content of Co<sup>3+</sup>. This study demonstrates that highly symmetrical cubic perovskite structure catalytic displays better OER performance.https://www.mdpi.com/2075-4701/12/6/991perovskiteOERlattice oxygenelectronic structure |
| spellingShingle | Shihao Song Xiaoming Mu Yanwei Ren Jia Guo Haifei Wei Heyan Liu Zunming Lu Study on the Effect of A/B Site Co-Doping on the Oxygen Evolution Reaction Performance of Strontium Cobaltite Metals perovskite OER lattice oxygen electronic structure |
| title | Study on the Effect of A/B Site Co-Doping on the Oxygen Evolution Reaction Performance of Strontium Cobaltite |
| title_full | Study on the Effect of A/B Site Co-Doping on the Oxygen Evolution Reaction Performance of Strontium Cobaltite |
| title_fullStr | Study on the Effect of A/B Site Co-Doping on the Oxygen Evolution Reaction Performance of Strontium Cobaltite |
| title_full_unstemmed | Study on the Effect of A/B Site Co-Doping on the Oxygen Evolution Reaction Performance of Strontium Cobaltite |
| title_short | Study on the Effect of A/B Site Co-Doping on the Oxygen Evolution Reaction Performance of Strontium Cobaltite |
| title_sort | study on the effect of a b site co doping on the oxygen evolution reaction performance of strontium cobaltite |
| topic | perovskite OER lattice oxygen electronic structure |
| url | https://www.mdpi.com/2075-4701/12/6/991 |
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