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dc.contributor.authorLi, Yinghaoen_US
dc.contributor.authorPeng, Chun-Kuoen_US
dc.contributor.authorHu, Huiminen_US
dc.contributor.authorChen, San-Yuanen_US
dc.contributor.authorChoi, Jin-Hoen_US
dc.contributor.authorLin, Yan-Guen_US
dc.contributor.authorLee, Jong-Minen_US
dc.identifier.citationLi, Y., Peng, C., Hu, H., Chen, S., Choi, J., Lin, Y. & Lee, J. (2022). Interstitial boron-triggered electron-deficient Os aerogels for enhanced pH-universal hydrogen evolution. Nature Communications, 13(1), 1143-.
dc.description.abstractDeveloping high-performance electrocatalysts for hydrogen evolution reaction (HER) is crucial for sustainable hydrogen production, yet still challenging. Here, we report boron-modulated osmium (B-Os) aerogels with rich defects and ultra-fine diameter as a pH-universal HER electrocatalyst. The catalyst shows the small overpotentials of 12, 19, and 33 mV at a current density of 10 mA cm-2 in acidic, alkaline, and neutral electrolytes, respectively, as well as excellent stability, surpassing commercial Pt/C. Operando X-ray absorption spectroscopy shows that interventional interstitial B atoms can optimize the electron structure of B-Os aerogels and stabilize Os as active sites in an electron-deficient state under realistic working conditions, and simultaneously reveals the HER catalytic mechanisms of B-Os aerogels in pH-universal electrolytes. The density functional theory calculations also indicate introducing B atoms can tailor the electronic structure of Os, resulting in the reduced water dissociation energy and the improved adsorption/desorption behavior of hydrogen, which synergistically accelerate HER.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.relation.ispartofNature Communicationsen_US
dc.rights© 2022 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit licenses/by/4.0/.en_US
dc.subjectEngineering::Chemical engineeringen_US
dc.titleInterstitial boron-triggered electron-deficient Os aerogels for enhanced pH-universal hydrogen evolutionen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen_US
dc.description.versionPublished versionen_US
dc.description.acknowledgementThis work was supported by the AcRF Tier 1 (grant RG105/19) provided by the Ministry of Education in Singapore, National Natural Science Foundation of China (grant nos. 11874044 and 52071225), Ministry of Science and Technology, Taiwan (grants MOST 108-2112-M-213-002-MY3 and 110‐2634‐F‐009‐026), and the Center for Emergent Functional Matter Science of National Yang Ming Chiao Tung University.en_US
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