{"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.
高负载pt基金属间化合物（IMC）电催化剂是质子交换膜燃料电池（pemfc）产品的重要组成部分。本工作采用两步退火策略制备了Pt - co IMC（标记为O-PtCo/C with SiO2）， Pt负载高达58.78 wt %，平均尺寸约为4.7 nm。含有SiO2的O-PtCo/C表现出良好的氧还原反应活性（0.44 a mgPt-1）和稳定性（ADT循环10K后损失约2.3%）。此外，在膜电极组装测试中，催化剂的输出功率密度高达1242 mW cm-2。所有这些都得益于有序结构和小尺寸的可控合成。本研究开发了一种促进燃料电池中高负荷Pt/Co IMCs商业化的方法。
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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