Synergistic Configuration of Binary Rhodium Single Atoms in Carbon Nanofibers for High‐Performance Alkaline Water Electrolyzer
Abstract Electrochemical alkaline water electrolysis offers significant economic advantages; however, these benefits are hindered by the high kinetic energy barrier of the water dissociation step and the sluggish kinetics of the hydrogen evolution reaction (HER) in alkaline media. Herein, the ensemb...
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Wiley
2025-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202413176 |
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| author | Natarajan Logeshwaran Gyuchan Kim Pandiarajan Thangavel Sun Seo Jeon Kaliannan Thiyagarajan Kampara Roopa Kishore Hyunjoo Lee Inseok Seo Hongseok Yun Sungho Lee Byung‐Hyun Kim Young Jun Lee |
| author_facet | Natarajan Logeshwaran Gyuchan Kim Pandiarajan Thangavel Sun Seo Jeon Kaliannan Thiyagarajan Kampara Roopa Kishore Hyunjoo Lee Inseok Seo Hongseok Yun Sungho Lee Byung‐Hyun Kim Young Jun Lee |
| author_sort | Natarajan Logeshwaran |
| collection | DOAJ |
| description | Abstract Electrochemical alkaline water electrolysis offers significant economic advantages; however, these benefits are hindered by the high kinetic energy barrier of the water dissociation step and the sluggish kinetics of the hydrogen evolution reaction (HER) in alkaline media. Herein, the ensemble effect of binary types of Rh single atoms (Rh‐Nx and Rh‐Ox) on TiO2‐embedded carbon nanofiber (Rh‐TiO2/CNF) is reported, which serves as potent active sites for high‐performance HER in anion exchange membrane water electrolyzer (AEMWE). Density functional theory (DFT) analyses support the experimental observations, highlighting the critical role of binary types of Rh single atoms facilitated by the TiO2 sites. The Rh‐TiO2/CNF demonstrates an impressive areal current density of 1 A cm−2, maintaining extended durability for up to 225 h in a single‐cell setup. Furthermore, a 2‐cell AEMWE stack utilizing Rh‐TiO2/CNF is tested under industrial‐scale conditions. This research makes a significant contribution to the commercialization of next‐generation high‐performance and durable AEMWE stacks for clean hydrogen production. |
| format | Article |
| id | doaj-art-3d55da34ee3147078a9d7655888d0e97 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
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| series | Advanced Science |
| spelling | doaj-art-3d55da34ee3147078a9d7655888d0e972025-01-20T13:04:18ZengWileyAdvanced Science2198-38442025-01-01123n/an/a10.1002/advs.202413176Synergistic Configuration of Binary Rhodium Single Atoms in Carbon Nanofibers for High‐Performance Alkaline Water ElectrolyzerNatarajan Logeshwaran0Gyuchan Kim1Pandiarajan Thangavel2Sun Seo Jeon3Kaliannan Thiyagarajan4Kampara Roopa Kishore5Hyunjoo Lee6Inseok Seo7Hongseok Yun8Sungho Lee9Byung‐Hyun Kim10Young Jun Lee11Carbon Composite Materials Research Center Korea Institute of Science and Technology (KIST) 92 Chudong‐ro, Bongdong‐eup Wanju‐gun Jeonbuk 55324 Republic of KoreaDepartment of Applied Chemistry Center for Bionano Intelligence Education and Research Hanyang University ERICA 55 Hanyangdaehak‐ro, Sangnok‐gu Ansan‐si Gyeonggi‐do 15588 Republic of KoreaDepartment of Chemistry Ulsan National Institute of Science and Technology (UNIST) UNIST‐gil, Eonyang‐eup, Ulju‐gun Ulsan 44919 Republic of KoreaDepartment of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaDepartment of Mechanical Engineering Ulsan National Institute of Science and Technology (UNIST) UNIST‐gil, Eonyang‐eup, Ulju‐gun Ulsan 44919 Republic of KoreaSchool of Advanced Materials Engineering Jeonbuk National University Baekje‐daero 567 Jeonju 54896 Republic of KoreaDepartment of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaSchool of Advanced Materials Engineering Jeonbuk National University Baekje‐daero 567 Jeonju 54896 Republic of KoreaDepartment of Chemistry Hanyang University 222, Wangsimni‐ro, Seongdong‐gu Seoul Republic of KoreaCarbon Composite Materials Research Center Korea Institute of Science and Technology (KIST) 92 Chudong‐ro, Bongdong‐eup Wanju‐gun Jeonbuk 55324 Republic of KoreaDepartment of Applied Chemistry Center for Bionano Intelligence Education and Research Hanyang University ERICA 55 Hanyangdaehak‐ro, Sangnok‐gu Ansan‐si Gyeonggi‐do 15588 Republic of KoreaCarbon Composite Materials Research Center Korea Institute of Science and Technology (KIST) 92 Chudong‐ro, Bongdong‐eup Wanju‐gun Jeonbuk 55324 Republic of KoreaAbstract Electrochemical alkaline water electrolysis offers significant economic advantages; however, these benefits are hindered by the high kinetic energy barrier of the water dissociation step and the sluggish kinetics of the hydrogen evolution reaction (HER) in alkaline media. Herein, the ensemble effect of binary types of Rh single atoms (Rh‐Nx and Rh‐Ox) on TiO2‐embedded carbon nanofiber (Rh‐TiO2/CNF) is reported, which serves as potent active sites for high‐performance HER in anion exchange membrane water electrolyzer (AEMWE). Density functional theory (DFT) analyses support the experimental observations, highlighting the critical role of binary types of Rh single atoms facilitated by the TiO2 sites. The Rh‐TiO2/CNF demonstrates an impressive areal current density of 1 A cm−2, maintaining extended durability for up to 225 h in a single‐cell setup. Furthermore, a 2‐cell AEMWE stack utilizing Rh‐TiO2/CNF is tested under industrial‐scale conditions. This research makes a significant contribution to the commercialization of next‐generation high‐performance and durable AEMWE stacks for clean hydrogen production.https://doi.org/10.1002/advs.202413176anion exchange membrane water electrolyzercarbon nanofiberhydrogen evolution reactioninterface engineeringsingle atom dispersion |
| spellingShingle | Natarajan Logeshwaran Gyuchan Kim Pandiarajan Thangavel Sun Seo Jeon Kaliannan Thiyagarajan Kampara Roopa Kishore Hyunjoo Lee Inseok Seo Hongseok Yun Sungho Lee Byung‐Hyun Kim Young Jun Lee Synergistic Configuration of Binary Rhodium Single Atoms in Carbon Nanofibers for High‐Performance Alkaline Water Electrolyzer Advanced Science anion exchange membrane water electrolyzer carbon nanofiber hydrogen evolution reaction interface engineering single atom dispersion |
| title | Synergistic Configuration of Binary Rhodium Single Atoms in Carbon Nanofibers for High‐Performance Alkaline Water Electrolyzer |
| title_full | Synergistic Configuration of Binary Rhodium Single Atoms in Carbon Nanofibers for High‐Performance Alkaline Water Electrolyzer |
| title_fullStr | Synergistic Configuration of Binary Rhodium Single Atoms in Carbon Nanofibers for High‐Performance Alkaline Water Electrolyzer |
| title_full_unstemmed | Synergistic Configuration of Binary Rhodium Single Atoms in Carbon Nanofibers for High‐Performance Alkaline Water Electrolyzer |
| title_short | Synergistic Configuration of Binary Rhodium Single Atoms in Carbon Nanofibers for High‐Performance Alkaline Water Electrolyzer |
| title_sort | synergistic configuration of binary rhodium single atoms in carbon nanofibers for high performance alkaline water electrolyzer |
| topic | anion exchange membrane water electrolyzer carbon nanofiber hydrogen evolution reaction interface engineering single atom dispersion |
| url | https://doi.org/10.1002/advs.202413176 |
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