{"title":"Controlled Synthesis of Ultrahigh-Loading Pt–Co Intermetallic Compounds for Superior Oxygen Reduction Reaction","authors":"Feng Song*, Ya-ni Yan, Xianghua Liu, Yunbo Zhang, Lijie Zhu, Shengping Wang, Mingfeng Shang, Pengran Gao and Huaiguo Huang, ","doi":"10.1021/acsaem.4c0195410.1021/acsaem.4c01954","DOIUrl":null,"url":null,"abstract":"<p >High-loading Pt-based intermetallic compound (IMC) electrocatalysts are crucial in proven proton-exchange membrane fuel cell (PEMFCs) products. This work prepares a Pt–Co IMC (marked as O-PtCo/C with SiO<sub>2</sub>) by using a two-step annealing strategy with a Pt loading of up to 58.78 wt % and an average size of ca. 4.7 nm. The O-PtCo/C with SiO<sub>2</sub> displays a great oxygen reduction reaction activity (0.44 A mg<sub>Pt</sub><sup>–1</sup>) and stability (∼2.3% loss after 10K cycles of ADT). Furthermore, the catalyst demonstrates an output power density of up to 1242 mW cm<sup>–2</sup> in the membrane electrode assembly test. All benefit from the controlled synthesis of ordered structures and small sizes. This study develops a way to promote the commercialization of high-loading Pt/Co IMCs in fuel cells.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11005–11010 11005–11010"},"PeriodicalIF":5.4000,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaem.4c01954","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
High-loading Pt-based intermetallic compound (IMC) electrocatalysts are crucial in proven proton-exchange membrane fuel cell (PEMFCs) products. This work prepares a Pt–Co IMC (marked as O-PtCo/C with SiO2) by using a two-step annealing strategy with a Pt loading of up to 58.78 wt % and an average size of ca. 4.7 nm. The O-PtCo/C with SiO2 displays a great oxygen reduction reaction activity (0.44 A mgPt–1) and stability (∼2.3% loss after 10K cycles of ADT). Furthermore, the catalyst demonstrates an output power density of up to 1242 mW cm–2 in the membrane electrode assembly test. All benefit from the controlled synthesis of ordered structures and small sizes. This study develops a way to promote the commercialization of high-loading Pt/Co IMCs in fuel cells.
期刊介绍：
ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.
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