Boosting hydrogen production with ultralow working voltage by selenium vacancy‐enhanced ultrafine platinum–nickel nanowires
Abstract Defect engineering provides a highly potential way to yield exceptional catalytic performance. Herein, we first report the selenium (Se) vacancies‐decorated ultrafine platinum–nickel (PtNi‐Sev) nanowires, as a bifunctional catalyst for the hydrogen evolution reaction (HER) and methanol oxid...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-03-01
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| Series: | SmartMat |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/smm2.1083 |
| _version_ | 1818283363909238784 |
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| author | Yu Jin Zhe Zhang Hao Yang Pengtang Wang Chenqi Shen Tao Cheng Xiaoqing Huang Qi Shao |
| author_facet | Yu Jin Zhe Zhang Hao Yang Pengtang Wang Chenqi Shen Tao Cheng Xiaoqing Huang Qi Shao |
| author_sort | Yu Jin |
| collection | DOAJ |
| description | Abstract Defect engineering provides a highly potential way to yield exceptional catalytic performance. Herein, we first report the selenium (Se) vacancies‐decorated ultrafine platinum–nickel (PtNi‐Sev) nanowires, as a bifunctional catalyst for the hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR). The optimized PtNi‐Sev exhibits obvious enhancement for HER and MOR compared to PtNi nanowires. It displays merely an overpotential of 18.8 mV for alkaline HER and the outstanding MOR performance (3.51 A/mgPt). When applying in one symmetric overall water splitting electrolyzer coupling with HER and MOR, an ultralow working voltage of 0.637 V with 100% Faraday efficiency for hydrogen production was achieved at the current density of 10 mA/cm2. Further investigations reveal that the weakened hydrogen binding energy, strong OH binding as well as relative weak CO binding are responsible for the improved HER and MOR activities. |
| first_indexed | 2024-12-13T00:35:44Z |
| format | Article |
| id | doaj.art-8a6b93233ce945888cefa25e70061526 |
| institution | Directory Open Access Journal |
| issn | 2688-819X |
| language | English |
| last_indexed | 2024-12-13T00:35:44Z |
| publishDate | 2022-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | SmartMat |
| spelling | doaj.art-8a6b93233ce945888cefa25e700615262022-12-22T00:05:13ZengWileySmartMat2688-819X2022-03-013113014110.1002/smm2.1083Boosting hydrogen production with ultralow working voltage by selenium vacancy‐enhanced ultrafine platinum–nickel nanowiresYu Jin0Zhe Zhang1Hao Yang2Pengtang Wang3Chenqi Shen4Tao Cheng5Xiaoqing Huang6Qi Shao7College of Chemistry, Chemical Engineering, and Materials Science Soochow University Suzhou ChinaInstitute of Functional Nano & Soft Materials Soochow University Suzhou ChinaInstitute of Functional Nano & Soft Materials Soochow University Suzhou ChinaCollege of Chemistry, Chemical Engineering, and Materials Science Soochow University Suzhou ChinaCollege of Chemistry, Chemical Engineering, and Materials Science Soochow University Suzhou ChinaInstitute of Functional Nano & Soft Materials Soochow University Suzhou ChinaState Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering Xiamen University Xiamen ChinaCollege of Chemistry, Chemical Engineering, and Materials Science Soochow University Suzhou ChinaAbstract Defect engineering provides a highly potential way to yield exceptional catalytic performance. Herein, we first report the selenium (Se) vacancies‐decorated ultrafine platinum–nickel (PtNi‐Sev) nanowires, as a bifunctional catalyst for the hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR). The optimized PtNi‐Sev exhibits obvious enhancement for HER and MOR compared to PtNi nanowires. It displays merely an overpotential of 18.8 mV for alkaline HER and the outstanding MOR performance (3.51 A/mgPt). When applying in one symmetric overall water splitting electrolyzer coupling with HER and MOR, an ultralow working voltage of 0.637 V with 100% Faraday efficiency for hydrogen production was achieved at the current density of 10 mA/cm2. Further investigations reveal that the weakened hydrogen binding energy, strong OH binding as well as relative weak CO binding are responsible for the improved HER and MOR activities.https://doi.org/10.1002/smm2.1083nanowireoverall water splittingplatinumultrafinevacancy |
| spellingShingle | Yu Jin Zhe Zhang Hao Yang Pengtang Wang Chenqi Shen Tao Cheng Xiaoqing Huang Qi Shao Boosting hydrogen production with ultralow working voltage by selenium vacancy‐enhanced ultrafine platinum–nickel nanowires SmartMat nanowire overall water splitting platinum ultrafine vacancy |
| title | Boosting hydrogen production with ultralow working voltage by selenium vacancy‐enhanced ultrafine platinum–nickel nanowires |
| title_full | Boosting hydrogen production with ultralow working voltage by selenium vacancy‐enhanced ultrafine platinum–nickel nanowires |
| title_fullStr | Boosting hydrogen production with ultralow working voltage by selenium vacancy‐enhanced ultrafine platinum–nickel nanowires |
| title_full_unstemmed | Boosting hydrogen production with ultralow working voltage by selenium vacancy‐enhanced ultrafine platinum–nickel nanowires |
| title_short | Boosting hydrogen production with ultralow working voltage by selenium vacancy‐enhanced ultrafine platinum–nickel nanowires |
| title_sort | boosting hydrogen production with ultralow working voltage by selenium vacancy enhanced ultrafine platinum nickel nanowires |
| topic | nanowire overall water splitting platinum ultrafine vacancy |
| url | https://doi.org/10.1002/smm2.1083 |
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