Locking interstitial hydrogen atoms in Pd metallenes for efficient oxygen reduction reaction
Abstract Palladium hydride (PdHx) metallenes are efficient electrocatalysts for the oxygen reduction reaction (ORR) due to their high atomic utilization and optimized oxygen binding energies modulated by interstitial hydrogen. However, their practical application is restricted by the highly unstable...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-61524-4 |
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| author | Yu Qiu Dongxu Jiao Hong Huang Jiandong Wu Mingming Wang Tianyi Gao Xiao Zhao Xin Ge Wei Zhang Weitao Zheng David J. Singh Jinchang Fan Xiaoqiang Cui |
| author_facet | Yu Qiu Dongxu Jiao Hong Huang Jiandong Wu Mingming Wang Tianyi Gao Xiao Zhao Xin Ge Wei Zhang Weitao Zheng David J. Singh Jinchang Fan Xiaoqiang Cui |
| author_sort | Yu Qiu |
| collection | DOAJ |
| description | Abstract Palladium hydride (PdHx) metallenes are efficient electrocatalysts for the oxygen reduction reaction (ORR) due to their high atomic utilization and optimized oxygen binding energies modulated by interstitial hydrogen. However, their practical application is restricted by the highly unstable nature of interstitial hydrogen at working temperatures around 353 K. Here, we report that the use of Mn effectively locks hydrogen atoms within the Pd metallenes lattice, resulting in high alkaline ORR performance across a temperature range of 303–353 K. In contrast, the ORR activity of PdHx metallenes declines sharply with increasing temperature. At 353 K, the mass activity of PdMnHx metallenes at 0.95 V reaches 1.41 A mg− 1, which is 14.1 times higher than that of PdHx metallenes. Multiple spectroscopic analyses and theoretical calculations reveal that strong electronic interactions within the immiscible Pd-Mn alloy are critical for locking interstitial hydrogen, thereby enhancing the ORR activity under high temperatures. |
| format | Article |
| id | doaj-art-76814b7dcc8b4545a7bc553194c8a480 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-76814b7dcc8b4545a7bc553194c8a4802025-08-20T03:37:37ZengNature PortfolioNature Communications2041-17232025-07-0116111210.1038/s41467-025-61524-4Locking interstitial hydrogen atoms in Pd metallenes for efficient oxygen reduction reactionYu Qiu0Dongxu Jiao1Hong Huang2Jiandong Wu3Mingming Wang4Tianyi Gao5Xiao Zhao6Xin Ge7Wei Zhang8Weitao Zheng9David J. Singh10Jinchang Fan11Xiaoqiang Cui12School of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversitySchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversitySchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversityKey Laboratory of Pathobiology of MOE, Nanomedicine and Translational Research Center, The Third Bethune Hospital of Jilin UniversitySchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversitySchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversitySchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversitySchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversitySchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversitySchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversityDepartment of Physics and Astronomy, University of MissouriSchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversitySchool of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Electron Microscopy Center, Jilin UniversityAbstract Palladium hydride (PdHx) metallenes are efficient electrocatalysts for the oxygen reduction reaction (ORR) due to their high atomic utilization and optimized oxygen binding energies modulated by interstitial hydrogen. However, their practical application is restricted by the highly unstable nature of interstitial hydrogen at working temperatures around 353 K. Here, we report that the use of Mn effectively locks hydrogen atoms within the Pd metallenes lattice, resulting in high alkaline ORR performance across a temperature range of 303–353 K. In contrast, the ORR activity of PdHx metallenes declines sharply with increasing temperature. At 353 K, the mass activity of PdMnHx metallenes at 0.95 V reaches 1.41 A mg− 1, which is 14.1 times higher than that of PdHx metallenes. Multiple spectroscopic analyses and theoretical calculations reveal that strong electronic interactions within the immiscible Pd-Mn alloy are critical for locking interstitial hydrogen, thereby enhancing the ORR activity under high temperatures.https://doi.org/10.1038/s41467-025-61524-4 |
| spellingShingle | Yu Qiu Dongxu Jiao Hong Huang Jiandong Wu Mingming Wang Tianyi Gao Xiao Zhao Xin Ge Wei Zhang Weitao Zheng David J. Singh Jinchang Fan Xiaoqiang Cui Locking interstitial hydrogen atoms in Pd metallenes for efficient oxygen reduction reaction Nature Communications |
| title | Locking interstitial hydrogen atoms in Pd metallenes for efficient oxygen reduction reaction |
| title_full | Locking interstitial hydrogen atoms in Pd metallenes for efficient oxygen reduction reaction |
| title_fullStr | Locking interstitial hydrogen atoms in Pd metallenes for efficient oxygen reduction reaction |
| title_full_unstemmed | Locking interstitial hydrogen atoms in Pd metallenes for efficient oxygen reduction reaction |
| title_short | Locking interstitial hydrogen atoms in Pd metallenes for efficient oxygen reduction reaction |
| title_sort | locking interstitial hydrogen atoms in pd metallenes for efficient oxygen reduction reaction |
| url | https://doi.org/10.1038/s41467-025-61524-4 |
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