Effects of incorporating pyrite-analogous CoSe2 on the thermoelectric properties of TiS2

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2024-09-07 DOI:10.1016/j.jallcom.2024.176410

Hui Liu , Anqi Zhao , Lin Pan , Tao Sun , Jiamin Cai , Changchun Chen , Yifeng Wang

{"title":"Effects of incorporating pyrite-analogous CoSe2 on the thermoelectric properties of TiS2","authors":"Hui Liu , Anqi Zhao , Lin Pan , Tao Sun , Jiamin Cai , Changchun Chen , Yifeng Wang","doi":"10.1016/j.jallcom.2024.176410","DOIUrl":null,"url":null,"abstract":"<div>In this study, we delved into the thermoelectric characteristics of TiS2 - x mol% CoSe2 composites, with x varying from 0 to 3. The incorporation of a modest quantity of CoSe2 prominently enhanced the grain orientation of TiS2. Nevertheless, a subsequent increase in CoSe2 content led to a rapid deterioration of the TiS2 grain orientation. The electrical conductivity σ exhibited an initial surge followed by a decline upon the addition of CoSe2. Conversely, the absolute Seebeck coefficient |S| initially decreased and then rose. Notably, the power factor PF of TiS2 peaked at 14.4 μWcm−1K−2 upon the inclusion of 2 mol% CoSe2, marking a substantial 1.7-fold enhancement compared to pristine TiS2. Furthermore, the thermal conductivity κ of TiS2 was effectively suppressed by the addition of CoSe2. Consequently, TiS2 - 2 mol% CoSe2 achieved a ZTmax value of 0.59 at 673 K, representing a noteworthy 1.8-fold increase over pristine TiS2.</div>","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":8.3000,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Materials & Interfaces","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925838824029979","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

In this study, we delved into the thermoelectric characteristics of TiS₂ - x mol% CoSe₂ composites, with x varying from 0 to 3. The incorporation of a modest quantity of CoSe₂ prominently enhanced the grain orientation of TiS₂. Nevertheless, a subsequent increase in CoSe₂ content led to a rapid deterioration of the TiS₂ grain orientation. The electrical conductivity σ exhibited an initial surge followed by a decline upon the addition of CoSe₂. Conversely, the absolute Seebeck coefficient |S| initially decreased and then rose. Notably, the power factor PF of TiS₂ peaked at 14.4 μWcm⁻¹K⁻² upon the inclusion of 2 mol% CoSe₂, marking a substantial 1.7-fold enhancement compared to pristine TiS₂. Furthermore, the thermal conductivity κ of TiS₂ was effectively suppressed by the addition of CoSe₂. Consequently, TiS₂ - 2 mol% CoSe₂ achieved a ZT_max value of 0.59 at 673 K, representing a noteworthy 1.8-fold increase over pristine TiS₂.

查看原文本刊更多论文

加入黄铁矿类似物 CoSe2 对 TiS2 热电性能的影响

在这项研究中，我们深入研究了 TiS2 - x mol% CoSe2 复合材料的热电特性，其中 x 在 0 到 3 之间变化。然而，随着 CoSe2 含量的增加，TiS2 的晶粒取向迅速恶化。添加 CoSe2 后，电导率 σ 出现了先上升后下降的现象。相反，绝对塞贝克系数 |S| 最初下降，然后上升。值得注意的是，加入 2 mol% CoSe2 后，TiS2 的功率因数 PF 达到 14.4 μWcm-1K-2 的峰值，与原始 TiS2 相比大幅提高了 1.7 倍。此外，加入 CoSe2 后，TiS2 的热导率 κ 被有效抑制。因此，TiS2 - 2 mol% CoSe2 在 673 K 时的 ZTmax 值为 0.59，比原始 TiS2 提高了 1.8 倍。

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

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.