Structural, micro-structural, ionic-conductivity and thermal expansion study of Ce0.76Sm0.08Nd0.08Y0.08O2–δ electrolyte for IT-SOFC applications

IF 3.4 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society Pub Date : 2025-09-16 DOI:10.1016/j.jics.2025.102122

Kasarapu Venkataramana , Chittimadula Madhuri , Ch. Madhusudan , C. Vishnuvardhan Reddy , Y. Ranjith Kumar , M. Vasundhara

{"title":"Structural, micro-structural, ionic-conductivity and thermal expansion study of Ce0.76Sm0.08Nd0.08Y0.08O2–δ electrolyte for IT-SOFC applications","authors":"Kasarapu Venkataramana , Chittimadula Madhuri , Ch. Madhusudan , C. Vishnuvardhan Reddy , Y. Ranjith Kumar , M. Vasundhara","doi":"10.1016/j.jics.2025.102122","DOIUrl":null,"url":null,"abstract":"<div><div>The development of solid electrolyte with enhanced properties towards intermediate temperature - solid oxide fuel cells (IT-SOFCs) remains an R&D issue. The present work deals with the study of novel Sm3+/Nd3+/Y3+ Tri-doped ceria (Ce0.76Sm0.08Nd0.08Y0.08O2–δ) Solid Electrolyte towards IT-SOFCs. The Ce0.76Sm0.08Nd0.08Y0.08O2–δ was synthesized via Sol-Gel technique, calcined/sintered at 800 °C/1300 °C and followed by the characterization of PXRD, SEM, HR-TEM, XPS, Raman, Impedance spectroscopy and Thermal expansion studies respectively. PXRD confirmed that the prepared sample displayed a single phase cubic fluorite-type structure. The crystallographic parameters were also perceived from the PXRD refinement analysis. Further surface microstructure, structural, and element analysis were examined using SEM, HR-TEM, XPS, and Raman studies. Electrical parameters i.e. ionic-conductivity along with activation energy were calculated for CSNY by using impedance studies. It was found that tri-doped ceria Ce0.76Sm0.08Nd0.08Y0.08O2–δ sample revealed the total-ionic-conductivity of 0.027 Scm−1 at 600 °C along with activation energy of 0.81eV. The matched thermal expansion coefficient of CSNY i.e. 12.77 × 10−6 °C−1 was revealed by the Thermal expansion study. Thus, it can be concluded that the prepared tri-doped ceria CSNY could be a capable solid-electrolyte in IT-SOFCs.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"102 11","pages":"Article 102122"},"PeriodicalIF":3.4000,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Indian Chemical Society","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0019452225005576","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The development of solid electrolyte with enhanced properties towards intermediate temperature - solid oxide fuel cells (IT-SOFCs) remains an R&D issue. The present work deals with the study of novel Sm³⁺/Nd³⁺/Y³⁺ Tri-doped ceria (Ce_0.76Sm_0.08Nd_0.08Y_0.08O_2–δ) Solid Electrolyte towards IT-SOFCs. The Ce_0.76Sm_0.08Nd_0.08Y_0.08O_2–δ was synthesized via Sol-Gel technique, calcined/sintered at 800 °C/1300 °C and followed by the characterization of PXRD, SEM, HR-TEM, XPS, Raman, Impedance spectroscopy and Thermal expansion studies respectively. PXRD confirmed that the prepared sample displayed a single phase cubic fluorite-type structure. The crystallographic parameters were also perceived from the PXRD refinement analysis. Further surface microstructure, structural, and element analysis were examined using SEM, HR-TEM, XPS, and Raman studies. Electrical parameters i.e. ionic-conductivity along with activation energy were calculated for CSNY by using impedance studies. It was found that tri-doped ceria Ce_0.76Sm_0.08Nd_0.08Y_0.08O_2–δ sample revealed the total-ionic-conductivity of 0.027 Scm⁻¹ at 600 °C along with activation energy of 0.81eV. The matched thermal expansion coefficient of CSNY i.e. 12.77 × 10⁻⁶ °C⁻¹ was revealed by the Thermal expansion study. Thus, it can be concluded that the prepared tri-doped ceria CSNY could be a capable solid-electrolyte in IT-SOFCs.

Abstract Image

查看原文本刊更多论文

IT-SOFC用Ce0.76Sm0.08Nd0.08Y0.08O2 -δ电解质的结构、微观结构、离子电导率和热膨胀研究

针对中温固体氧化物燃料电池（IT-SOFCs），开发具有增强性能的固体电解质仍然是一个研发问题。本文研究了新型Sm3+/Nd3+/Y3+三掺杂氧化铈（Ce0.76Sm0.08Nd0.08Y0.08O2 -δ）固体电解质在it - sofc中的应用。采用溶胶-凝胶法合成Ce0.76Sm0.08Nd0.08Y0.08O2 -δ，在800°C/1300°C下煅烧/烧结，分别用PXRD、SEM、HR-TEM、XPS、拉曼光谱、阻抗谱和热膨胀研究对Ce0.76Sm0.08Nd0.08Y0.08O2 -δ进行表征。PXRD证实制备的样品为单相立方萤石型结构。通过PXRD细化分析，得到了晶体学参数。进一步的表面微观结构、结构和元素分析使用SEM、HR-TEM、XPS和拉曼研究进行了检查。通过阻抗研究计算了CSNY的电学参数，即离子电导率和活化能。结果表明，三掺杂的Ce0.76Sm0.08Nd0.08Y0.08O2 -δ样品在600℃时的总离子电导率为0.027 Scm−1，活化能为0.81eV。热膨胀实验表明，CSNY的热膨胀系数为12.77 × 10−6°C−1。因此，制备的三掺杂氧化铈CSNY可以作为it - sofc的固体电解质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of the Indian Chemical Society 化学-化学综合

CiteScore

3.50

自引率

7.70%

发文量

492

审稿时长

3-8 weeks

期刊介绍： The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.