{"title":"Investigation of the structural and electrical properties of nanocrystalline YSZ for SOFC application","authors":"Prerna Vinchhi, Atul Kumar Mishra, Ranjan Pati","doi":"10.1007/s12034-024-03222-3","DOIUrl":null,"url":null,"abstract":"<p>Nanocrystalline yttria-stabilized zirconia (YSZ) was synthesized by a modified co-precipitation method. The process involves the use of molecular water associated with metal precursors to facilitate the hydroxylation. In this method, triethylamine was used to generate hydroxide ions from the molecular water of precursors, which helps to produce the metal hydroxides. Since no external water is utilized during the precipitation process, it is expected that the as-prepared and calcined materials should have minimum aggregation caused by the hydrogen bonding. The as-prepared and calcined YSZ powders are characterized by X-ray powder diffraction (XRD), energy dispersive X-ray analysis (EDX), Brunauer Emmett-Teller (BET), transmission and scanning electron microscopy (TEM and SEM) and electrochemical impedance spectroscopy (EIS). Cubic phase YSZ, having yttria content of 8 mol%, has been formed at a calcination temperature of 650°C. The YSZ powder has a surface area of 88 m<sup>2</sup> g<sup>–1</sup> and the particle diameters measured from TEM are in the range of 8–15 nm, which is in good agreement with the average particle diameter, which is ~12 nm, obtained from surface area. The materials produced have grain boundary oxygen ion conductivity of 0.073 S cm<sup>–1</sup> at 800°C, which is one of the main parameters for SOFC to get higher power density.</p>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s12034-024-03222-3","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Nanocrystalline yttria-stabilized zirconia (YSZ) was synthesized by a modified co-precipitation method. The process involves the use of molecular water associated with metal precursors to facilitate the hydroxylation. In this method, triethylamine was used to generate hydroxide ions from the molecular water of precursors, which helps to produce the metal hydroxides. Since no external water is utilized during the precipitation process, it is expected that the as-prepared and calcined materials should have minimum aggregation caused by the hydrogen bonding. The as-prepared and calcined YSZ powders are characterized by X-ray powder diffraction (XRD), energy dispersive X-ray analysis (EDX), Brunauer Emmett-Teller (BET), transmission and scanning electron microscopy (TEM and SEM) and electrochemical impedance spectroscopy (EIS). Cubic phase YSZ, having yttria content of 8 mol%, has been formed at a calcination temperature of 650°C. The YSZ powder has a surface area of 88 m2 g–1 and the particle diameters measured from TEM are in the range of 8–15 nm, which is in good agreement with the average particle diameter, which is ~12 nm, obtained from surface area. The materials produced have grain boundary oxygen ion conductivity of 0.073 S cm–1 at 800°C, which is one of the main parameters for SOFC to get higher power density.
期刊介绍:
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.