Ruiqing Ding , Yimeng Li , Ziliang Liu , Zhen Ma , Xiaohui Jiang , Jiaming Cao , Bin Zhao , Ke Zhan
{"title":"304不锈钢双极板一步电聚合制备氧化石墨烯/碳纳米管杂化增强聚吡咯涂层的微观结构、性能及协同效应","authors":"Ruiqing Ding , Yimeng Li , Ziliang Liu , Zhen Ma , Xiaohui Jiang , Jiaming Cao , Bin Zhao , Ke Zhan","doi":"10.1016/j.porgcoat.2025.109535","DOIUrl":null,"url":null,"abstract":"<div><div>The good electrical conductivity and excellent corrosion resistance of conductive polymer coatings are two important factors for protecting metallic bipolar plates of proton exchange membrane fuel cells (PEMFCs). Here, GO/CNTs hybrid reinforced polypyrrole (PPY) coatings were prepared on 304 stainless steel (304SS) samples to protect them against corrosion in PEMFCs corrosive operating environments by a one-step electropolymerization. The microstructure, corrosion resistance and electrical conductivity of GO/CNTs hybrid reinforced PPY composite coatings were investigated. Electrochemical testing results demonstrated that the GO/CNTs/PPY coatings achieved optimal corrosion resistance and electrical conductivity when the GO/CNTs hybrid reinforcement with a low CNTs content. The polarized current density of 304SS covered with optimized GO/CNTs hybrid reinforced PPY composite coating was significantly reduced to 8.62 μA/cm<sup>2</sup>, while the interfacial contact resistance was 130.5 mΩ cm<sup>2</sup>. The enhanced corrosion protection and good electrical conductivity of the GO/CNTs/PPY composite coating can be ascribed to the conductive network formed by the GO/CNTs hybrid reinforcement and the microscopic interaction between the carbon reinforcement and the polypyrrole.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"208 ","pages":"Article 109535"},"PeriodicalIF":7.3000,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microstructure, properties and synergistic effect of GO/CNTs hybrid reinforced polypyrrole coatings prepared by a one-step electropolymerization for 304 stainless steel bipolar plates in PEMF cells\",\"authors\":\"Ruiqing Ding , Yimeng Li , Ziliang Liu , Zhen Ma , Xiaohui Jiang , Jiaming Cao , Bin Zhao , Ke Zhan\",\"doi\":\"10.1016/j.porgcoat.2025.109535\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The good electrical conductivity and excellent corrosion resistance of conductive polymer coatings are two important factors for protecting metallic bipolar plates of proton exchange membrane fuel cells (PEMFCs). Here, GO/CNTs hybrid reinforced polypyrrole (PPY) coatings were prepared on 304 stainless steel (304SS) samples to protect them against corrosion in PEMFCs corrosive operating environments by a one-step electropolymerization. The microstructure, corrosion resistance and electrical conductivity of GO/CNTs hybrid reinforced PPY composite coatings were investigated. Electrochemical testing results demonstrated that the GO/CNTs/PPY coatings achieved optimal corrosion resistance and electrical conductivity when the GO/CNTs hybrid reinforcement with a low CNTs content. The polarized current density of 304SS covered with optimized GO/CNTs hybrid reinforced PPY composite coating was significantly reduced to 8.62 μA/cm<sup>2</sup>, while the interfacial contact resistance was 130.5 mΩ cm<sup>2</sup>. The enhanced corrosion protection and good electrical conductivity of the GO/CNTs/PPY composite coating can be ascribed to the conductive network formed by the GO/CNTs hybrid reinforcement and the microscopic interaction between the carbon reinforcement and the polypyrrole.</div></div>\",\"PeriodicalId\":20834,\"journal\":{\"name\":\"Progress in Organic Coatings\",\"volume\":\"208 \",\"pages\":\"Article 109535\"},\"PeriodicalIF\":7.3000,\"publicationDate\":\"2025-07-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Progress in Organic Coatings\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0300944025004849\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Organic Coatings","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0300944025004849","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
Microstructure, properties and synergistic effect of GO/CNTs hybrid reinforced polypyrrole coatings prepared by a one-step electropolymerization for 304 stainless steel bipolar plates in PEMF cells
The good electrical conductivity and excellent corrosion resistance of conductive polymer coatings are two important factors for protecting metallic bipolar plates of proton exchange membrane fuel cells (PEMFCs). Here, GO/CNTs hybrid reinforced polypyrrole (PPY) coatings were prepared on 304 stainless steel (304SS) samples to protect them against corrosion in PEMFCs corrosive operating environments by a one-step electropolymerization. The microstructure, corrosion resistance and electrical conductivity of GO/CNTs hybrid reinforced PPY composite coatings were investigated. Electrochemical testing results demonstrated that the GO/CNTs/PPY coatings achieved optimal corrosion resistance and electrical conductivity when the GO/CNTs hybrid reinforcement with a low CNTs content. The polarized current density of 304SS covered with optimized GO/CNTs hybrid reinforced PPY composite coating was significantly reduced to 8.62 μA/cm2, while the interfacial contact resistance was 130.5 mΩ cm2. The enhanced corrosion protection and good electrical conductivity of the GO/CNTs/PPY composite coating can be ascribed to the conductive network formed by the GO/CNTs hybrid reinforcement and the microscopic interaction between the carbon reinforcement and the polypyrrole.
期刊介绍:
The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as:
• Chemical, physical and technological properties of organic coatings and related materials
• Problems and methods of preparation, manufacture and application of these materials
• Performance, testing and analysis.