改进平行流共沉淀法制备镧掺杂Ca3Co4O9的热电性能

IF 1.3 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Advances in Applied Ceramics Pub Date : 2021-02-17 DOI:10.1080/17436753.2021.1889754

Sikai Ren, L. Gou

{"title":"改进平行流共沉淀法制备镧掺杂Ca3Co4O9的热电性能","authors":"Sikai Ren, L. Gou","doi":"10.1080/17436753.2021.1889754","DOIUrl":null,"url":null,"abstract":"ABSTRACT An improvement in the thermoelectric properties of calcium cobaltite ceramics (Ca3Co4O9) was demonstrated through a modified co-precipitation method and lanthanum doping. With highly reactive precursors derived from the modified method, the energy consumption was conserved due to an apparent decrease in calcination duration. The conventional sintering produced a layer structure with the interconnected grains and the pores, which simultaneously optimised the thermal and electrical conductivity. The thermoelectric property was improved by the combination of the special morphology and ion substitution. The figure of merit ZT reached 0.205 (600°C) which was a competitive value for polycrystalline Ca3Co4O9 ceramics. The study provided a potential route for scalable production of Ca3Co4O9 ceramics with low energy use and excellent performance.","PeriodicalId":7224,"journal":{"name":"Advances in Applied Ceramics","volume":"35 1","pages":"95 - 103"},"PeriodicalIF":1.3000,"publicationDate":"2021-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Thermoelectric properties of the lanthanum-doped Ca3Co4O9 prepared by a modified parallel flow co-precipitation method\",\"authors\":\"Sikai Ren, L. Gou\",\"doi\":\"10.1080/17436753.2021.1889754\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT An improvement in the thermoelectric properties of calcium cobaltite ceramics (Ca3Co4O9) was demonstrated through a modified co-precipitation method and lanthanum doping. With highly reactive precursors derived from the modified method, the energy consumption was conserved due to an apparent decrease in calcination duration. The conventional sintering produced a layer structure with the interconnected grains and the pores, which simultaneously optimised the thermal and electrical conductivity. The thermoelectric property was improved by the combination of the special morphology and ion substitution. The figure of merit ZT reached 0.205 (600°C) which was a competitive value for polycrystalline Ca3Co4O9 ceramics. The study provided a potential route for scalable production of Ca3Co4O9 ceramics with low energy use and excellent performance.\",\"PeriodicalId\":7224,\"journal\":{\"name\":\"Advances in Applied Ceramics\",\"volume\":\"35 1\",\"pages\":\"95 - 103\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2021-02-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Applied Ceramics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1080/17436753.2021.1889754\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Applied Ceramics","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/17436753.2021.1889754","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}

引用次数: 4

摘要

通过改进共沉淀法和镧掺杂，证明了钴酸钙陶瓷(Ca3Co4O9)的热电性能得到了改善。通过改进的方法得到的高活性前驱体，由于明显减少了煅烧时间，因此节省了能耗。传统的烧结产生了一种具有相互连接的颗粒和孔隙的层状结构，同时优化了导热性和导电性。特殊的形貌与离子取代相结合，提高了热电性能。ZT达到0.205(600°C)，是Ca3Co4O9多晶陶瓷的竞争值。该研究为低能耗、高性能的Ca3Co4O9陶瓷的规模化生产提供了一条潜在的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Thermoelectric properties of the lanthanum-doped Ca3Co4O9 prepared by a modified parallel flow co-precipitation method

ABSTRACT An improvement in the thermoelectric properties of calcium cobaltite ceramics (Ca3Co4O9) was demonstrated through a modified co-precipitation method and lanthanum doping. With highly reactive precursors derived from the modified method, the energy consumption was conserved due to an apparent decrease in calcination duration. The conventional sintering produced a layer structure with the interconnected grains and the pores, which simultaneously optimised the thermal and electrical conductivity. The thermoelectric property was improved by the combination of the special morphology and ion substitution. The figure of merit ZT reached 0.205 (600°C) which was a competitive value for polycrystalline Ca3Co4O9 ceramics. The study provided a potential route for scalable production of Ca3Co4O9 ceramics with low energy use and excellent performance.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Advances in Applied Ceramics 工程技术-材料科学：硅酸盐

CiteScore

4.40

自引率

4.50%

发文量

审稿时长

5.2 months

期刊介绍： Advances in Applied Ceramics: Structural, Functional and Bioceramics provides international coverage of high-quality research on functional ceramics, engineering ceramics and bioceramics.