Hollow-Structure Pt-Ni Nanoparticle Electrocatalysts for Oxygen Reduction Reaction
An electrocatalyst with high oxygen reduction reaction (ORR) activity and high stability during start–stop operation is necessary. In this paper, hollow-structure Pt-Ni electrocatalysts are investigated as ORR catalysts. After synthesis via sacrificial SiO<sub>2</sub> template method, th...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/8/2524 |
| _version_ | 1797409911168040960 |
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| author | Quan Wang Baosen Mi Jun Zhou Ziwei Qin Zhuo Chen Hongbin Wang |
| author_facet | Quan Wang Baosen Mi Jun Zhou Ziwei Qin Zhuo Chen Hongbin Wang |
| author_sort | Quan Wang |
| collection | DOAJ |
| description | An electrocatalyst with high oxygen reduction reaction (ORR) activity and high stability during start–stop operation is necessary. In this paper, hollow-structure Pt-Ni electrocatalysts are investigated as ORR catalysts. After synthesis via sacrificial SiO<sub>2</sub> template method, the electrocatalyst exhibits much higher specific activity (1.88 mA/cm<sup>2</sup>) than a commercial Pt/C catalyst. The mass activity (0.49 A/mg) is 7 times higher than the commercial Pt/C catalyst. The kinetics of the ORR is evaluated using Tafel and K-L plots. It also exhibits a higher durability than commercial Pt/C catalyst during accelerated durability test (ADT). Moreover, the electrocatalyst shows good resistance against accelerated durability test for start–stop, the specific activity and mass activity drops 34.6% and 40.8%, respectively, far better than the commercial catalyst. |
| first_indexed | 2024-03-09T04:22:22Z |
| format | Article |
| id | doaj.art-d40b46b8ab234ba79f863b223bda35a9 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T04:22:22Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-d40b46b8ab234ba79f863b223bda35a92023-12-03T13:46:41ZengMDPI AGMolecules1420-30492022-04-01278252410.3390/molecules27082524Hollow-Structure Pt-Ni Nanoparticle Electrocatalysts for Oxygen Reduction ReactionQuan Wang0Baosen Mi1Jun Zhou2Ziwei Qin3Zhuo Chen4Hongbin Wang5School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaAn electrocatalyst with high oxygen reduction reaction (ORR) activity and high stability during start–stop operation is necessary. In this paper, hollow-structure Pt-Ni electrocatalysts are investigated as ORR catalysts. After synthesis via sacrificial SiO<sub>2</sub> template method, the electrocatalyst exhibits much higher specific activity (1.88 mA/cm<sup>2</sup>) than a commercial Pt/C catalyst. The mass activity (0.49 A/mg) is 7 times higher than the commercial Pt/C catalyst. The kinetics of the ORR is evaluated using Tafel and K-L plots. It also exhibits a higher durability than commercial Pt/C catalyst during accelerated durability test (ADT). Moreover, the electrocatalyst shows good resistance against accelerated durability test for start–stop, the specific activity and mass activity drops 34.6% and 40.8%, respectively, far better than the commercial catalyst.https://www.mdpi.com/1420-3049/27/8/2524electrocatalystoxygen reduction reactionPEMFChollow structurecarbon-free |
| spellingShingle | Quan Wang Baosen Mi Jun Zhou Ziwei Qin Zhuo Chen Hongbin Wang Hollow-Structure Pt-Ni Nanoparticle Electrocatalysts for Oxygen Reduction Reaction Molecules electrocatalyst oxygen reduction reaction PEMFC hollow structure carbon-free |
| title | Hollow-Structure Pt-Ni Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_full | Hollow-Structure Pt-Ni Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_fullStr | Hollow-Structure Pt-Ni Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_full_unstemmed | Hollow-Structure Pt-Ni Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_short | Hollow-Structure Pt-Ni Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_sort | hollow structure pt ni nanoparticle electrocatalysts for oxygen reduction reaction |
| topic | electrocatalyst oxygen reduction reaction PEMFC hollow structure carbon-free |
| url | https://www.mdpi.com/1420-3049/27/8/2524 |
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