Atomically thin high-entropy oxides via naked metal ion self-assembly for proton exchange membrane electrolysis
Abstract Designing efficient Ruthenium-based catalysts as practical anodes is of critical importance in proton exchange membrane water electrolysis. Here, we develop a self-assembly technique to synthesize 1 nm-thick rutile-structured high-entropy oxides (RuIrFeCoCrO2) from naked metal ions assembly...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-01-01
|
| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56189-y |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832585602052128768 |
|---|---|
| author | Tao Zhang Qingyi Liu Haoming Bao Mingyue Wang Nana Wang Bao Zhang Hong Jin Fan |
| author_facet | Tao Zhang Qingyi Liu Haoming Bao Mingyue Wang Nana Wang Bao Zhang Hong Jin Fan |
| author_sort | Tao Zhang |
| collection | DOAJ |
| description | Abstract Designing efficient Ruthenium-based catalysts as practical anodes is of critical importance in proton exchange membrane water electrolysis. Here, we develop a self-assembly technique to synthesize 1 nm-thick rutile-structured high-entropy oxides (RuIrFeCoCrO2) from naked metal ions assembly and oxidation at air-molten salt interface. The RuIrFeCoCrO2 requires an overpotential of 185 mV at 10 m A cm−2 and maintains the high activity for over 1000 h in an acidic electrolyte via the adsorption evolution mechanism. We discuss the role of each element in the RuIrFeCoCrO2 and find that the Cr, Co, and Ir sites contribute to the catalytic activity, while the Cr atoms weaken the Ru-O bond covalency and improves the catalyst stability. The assembled proton exchange membrane electrolyzer operates stably for more than 600 h at a large current of 1 A cm−2. The naked ion assembly demonstrated in this work may provide an effective pathway for the controlled synthesis of a diversity of high-entropy materials. |
| format | Article |
| id | doaj-art-e7af6dcebef34e68acb5596d97e62aa5 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-e7af6dcebef34e68acb5596d97e62aa52025-01-26T12:42:49ZengNature PortfolioNature Communications2041-17232025-01-0116111110.1038/s41467-025-56189-yAtomically thin high-entropy oxides via naked metal ion self-assembly for proton exchange membrane electrolysisTao Zhang0Qingyi Liu1Haoming Bao2Mingyue Wang3Nana Wang4Bao Zhang5Hong Jin Fan6School of Physical and Mathematical Sciences, Nanyang Technological UniversitySchool of Physical and Mathematical Sciences, Nanyang Technological UniversitySchool of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological UniversityInstitute for Superconducting and Electronic Materials, Faculty of Engineering and Information Sciences, University of WollongongCentre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology SydneySchool of Materials and Energy, University of Electronic Science and Technology of ChinaSchool of Physical and Mathematical Sciences, Nanyang Technological UniversityAbstract Designing efficient Ruthenium-based catalysts as practical anodes is of critical importance in proton exchange membrane water electrolysis. Here, we develop a self-assembly technique to synthesize 1 nm-thick rutile-structured high-entropy oxides (RuIrFeCoCrO2) from naked metal ions assembly and oxidation at air-molten salt interface. The RuIrFeCoCrO2 requires an overpotential of 185 mV at 10 m A cm−2 and maintains the high activity for over 1000 h in an acidic electrolyte via the adsorption evolution mechanism. We discuss the role of each element in the RuIrFeCoCrO2 and find that the Cr, Co, and Ir sites contribute to the catalytic activity, while the Cr atoms weaken the Ru-O bond covalency and improves the catalyst stability. The assembled proton exchange membrane electrolyzer operates stably for more than 600 h at a large current of 1 A cm−2. The naked ion assembly demonstrated in this work may provide an effective pathway for the controlled synthesis of a diversity of high-entropy materials.https://doi.org/10.1038/s41467-025-56189-y |
| spellingShingle | Tao Zhang Qingyi Liu Haoming Bao Mingyue Wang Nana Wang Bao Zhang Hong Jin Fan Atomically thin high-entropy oxides via naked metal ion self-assembly for proton exchange membrane electrolysis Nature Communications |
| title | Atomically thin high-entropy oxides via naked metal ion self-assembly for proton exchange membrane electrolysis |
| title_full | Atomically thin high-entropy oxides via naked metal ion self-assembly for proton exchange membrane electrolysis |
| title_fullStr | Atomically thin high-entropy oxides via naked metal ion self-assembly for proton exchange membrane electrolysis |
| title_full_unstemmed | Atomically thin high-entropy oxides via naked metal ion self-assembly for proton exchange membrane electrolysis |
| title_short | Atomically thin high-entropy oxides via naked metal ion self-assembly for proton exchange membrane electrolysis |
| title_sort | atomically thin high entropy oxides via naked metal ion self assembly for proton exchange membrane electrolysis |
| url | https://doi.org/10.1038/s41467-025-56189-y |
| work_keys_str_mv | AT taozhang atomicallythinhighentropyoxidesvianakedmetalionselfassemblyforprotonexchangemembraneelectrolysis AT qingyiliu atomicallythinhighentropyoxidesvianakedmetalionselfassemblyforprotonexchangemembraneelectrolysis AT haomingbao atomicallythinhighentropyoxidesvianakedmetalionselfassemblyforprotonexchangemembraneelectrolysis AT mingyuewang atomicallythinhighentropyoxidesvianakedmetalionselfassemblyforprotonexchangemembraneelectrolysis AT nanawang atomicallythinhighentropyoxidesvianakedmetalionselfassemblyforprotonexchangemembraneelectrolysis AT baozhang atomicallythinhighentropyoxidesvianakedmetalionselfassemblyforprotonexchangemembraneelectrolysis AT hongjinfan atomicallythinhighentropyoxidesvianakedmetalionselfassemblyforprotonexchangemembraneelectrolysis |