{"title":"构建用于高级氧还原的树枝状铂钯双金属纳米管异质结构","authors":"Mingwei Wang, Zhiyi Hu, Jieheng Lv, Zhiwen Yin, Zhewei Xu, Jingfeng Liu, Shihao Feng, Xiaoqian Wang, Jiazhen He, Sicheng Luo, Dafu Zhao, Hang Li, Xuemin Luo, Qi Liu, Damin Liu, Baolian Su, Dongyuan Zhao, Yong Liu","doi":"10.1002/idm2.12212","DOIUrl":null,"url":null,"abstract":"<p>Compositions and morphologies of Pt-based electrocatalysts have great impact on the electrocatalytic activity and stability of oxygen reduction reaction (ORR). Herein, we report a novel design of one-dimensional (1D) Pt–Pd dendritic nanotubular heterostructures (DTHs) by controlling the degree of Pt<sup>2+</sup>-Pt reduction reaction and Pd-Pt galvanic replacement reaction with uniform Pd nanowires as sacrificial templates. The obtained Pt–Pd bimetallic DTHs catalyst exhibited uniform and dense Pt dendritic nanobranches on the surface of 1D hollow Pt–Pd alloy nanotubes, possessing superior catalytic activity for ORR compared to state-of-the-art commercial Pt/C catalysts. Typically, the Pt<sub>4</sub>Pd DTHs catalyst showed efficient mass activity (MA, 1.05 A mg<sub>Pt</sub><sup>−1</sup>) and specific activity (SA, 1.25 mA cm<sub>Pt</sub><sup>−2</sup>) at 0.9 V (vs. RHE), and the catalyst exhibited high stability with 90.4% MA retention after 20 000 potential cycles. The Pt–Pd bimetallic DTHs configuration combines the advantages of 1D hollow nanostructures and dense Pt dendritic nanobranches, which results in rich electrochemical active surface sites, fast charge transport, and multiple dendritic anchoring points contact on carbon support, thus boosting its catalytic activity and stability towards electrocatalysis.</p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"3 6","pages":"907-918"},"PeriodicalIF":24.5000,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.12212","citationCount":"0","resultStr":"{\"title\":\"Construction of dendritic Pt–Pd bimetallic nanotubular heterostructure for advanced oxygen reduction\",\"authors\":\"Mingwei Wang, Zhiyi Hu, Jieheng Lv, Zhiwen Yin, Zhewei Xu, Jingfeng Liu, Shihao Feng, Xiaoqian Wang, Jiazhen He, Sicheng Luo, Dafu Zhao, Hang Li, Xuemin Luo, Qi Liu, Damin Liu, Baolian Su, Dongyuan Zhao, Yong Liu\",\"doi\":\"10.1002/idm2.12212\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Compositions and morphologies of Pt-based electrocatalysts have great impact on the electrocatalytic activity and stability of oxygen reduction reaction (ORR). Herein, we report a novel design of one-dimensional (1D) Pt–Pd dendritic nanotubular heterostructures (DTHs) by controlling the degree of Pt<sup>2+</sup>-Pt reduction reaction and Pd-Pt galvanic replacement reaction with uniform Pd nanowires as sacrificial templates. The obtained Pt–Pd bimetallic DTHs catalyst exhibited uniform and dense Pt dendritic nanobranches on the surface of 1D hollow Pt–Pd alloy nanotubes, possessing superior catalytic activity for ORR compared to state-of-the-art commercial Pt/C catalysts. Typically, the Pt<sub>4</sub>Pd DTHs catalyst showed efficient mass activity (MA, 1.05 A mg<sub>Pt</sub><sup>−1</sup>) and specific activity (SA, 1.25 mA cm<sub>Pt</sub><sup>−2</sup>) at 0.9 V (vs. RHE), and the catalyst exhibited high stability with 90.4% MA retention after 20 000 potential cycles. The Pt–Pd bimetallic DTHs configuration combines the advantages of 1D hollow nanostructures and dense Pt dendritic nanobranches, which results in rich electrochemical active surface sites, fast charge transport, and multiple dendritic anchoring points contact on carbon support, thus boosting its catalytic activity and stability towards electrocatalysis.</p>\",\"PeriodicalId\":100685,\"journal\":{\"name\":\"Interdisciplinary Materials\",\"volume\":\"3 6\",\"pages\":\"907-918\"},\"PeriodicalIF\":24.5000,\"publicationDate\":\"2024-08-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.12212\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Interdisciplinary Materials\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/idm2.12212\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Interdisciplinary Materials","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/idm2.12212","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Construction of dendritic Pt–Pd bimetallic nanotubular heterostructure for advanced oxygen reduction
Compositions and morphologies of Pt-based electrocatalysts have great impact on the electrocatalytic activity and stability of oxygen reduction reaction (ORR). Herein, we report a novel design of one-dimensional (1D) Pt–Pd dendritic nanotubular heterostructures (DTHs) by controlling the degree of Pt2+-Pt reduction reaction and Pd-Pt galvanic replacement reaction with uniform Pd nanowires as sacrificial templates. The obtained Pt–Pd bimetallic DTHs catalyst exhibited uniform and dense Pt dendritic nanobranches on the surface of 1D hollow Pt–Pd alloy nanotubes, possessing superior catalytic activity for ORR compared to state-of-the-art commercial Pt/C catalysts. Typically, the Pt4Pd DTHs catalyst showed efficient mass activity (MA, 1.05 A mgPt−1) and specific activity (SA, 1.25 mA cmPt−2) at 0.9 V (vs. RHE), and the catalyst exhibited high stability with 90.4% MA retention after 20 000 potential cycles. The Pt–Pd bimetallic DTHs configuration combines the advantages of 1D hollow nanostructures and dense Pt dendritic nanobranches, which results in rich electrochemical active surface sites, fast charge transport, and multiple dendritic anchoring points contact on carbon support, thus boosting its catalytic activity and stability towards electrocatalysis.