增强型碲化锑热电发电机:从材料合成到设备应用

IF 6.2 2区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS
Nattharika Theekhasuk , Rachsak Sakdanuphab , Athorn Voraud , Pichet Limsuwan , Aparporn Sakulkalavek , Nuttakrit Somdock
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引用次数: 0

摘要

本研究探讨了Bi₄O₄SeCl₂(BOSC)添加量(0-4 wt%)对p型Bi₀.₅Sb₁热电性能的影响。₅Te₃通过高能球磨合成。XRD分析显示,在1 wt% BOSC时,晶格掺入,而较高的浓度导致相分离。由于声子散射增强,1 wt%的BOSC样品的总导热系数显著降低,为0.28 W/m·K,而未掺杂样品的总导热系数为0.46 W/m·K。尽管电导率和塞贝克系数略有下降,但在50°C时达到了1.02的峰值ZT,比未掺杂的材料提高了~ 54 %。此外,在150°C的温度梯度下,用掺杂bosc的支腿制作的热电模块原型产生了17.6 mW/cm²的功率密度。这些结果表明,BOSC是一种有效的添加剂,可以降低导热系数,提高整体热电性能,为在中等温度下的能量收集应用提供了潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhanced antimony telluride thermoelectric generators: From material synthesis to device applications
This study investigates the effect of Bi₄O₄SeCl₂ (BOSC) addition (0–4 wt%) on the thermoelectric performance of p-type Bi₀.₅Sb₁.₅Te₃ synthesized via high-energy ball milling. XRD analysis revealed lattice incorporation at 1 wt% BOSC, while higher concentrations led to phase separation. The 1 wt% BOSC sample exhibited a significantly reduced total thermal conductivity of 0.28 W/m·K, compared to 0.46 W/m·K in the undoped sample, attributed to enhanced phonon scattering. Despite moderate decreases in electrical conductivity and Seebeck coefficient, a peak ZT of 1.02 at 50 °C was achieved—representing a ∼54 % improvement over the undoped material. Furthermore, a prototype thermoelectric module fabricated with BOSC-doped legs produced a power density of 17.6 mW/cm² under a 150 °C temperature gradient. These results demonstrate that BOSC is an effective additive for reducing thermal conductivity and enhancing overall thermoelectric performance, offering potential for energy harvesting applications at moderate temperatures.
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来源期刊
Journal of The European Ceramic Society
Journal of The European Ceramic Society 工程技术-材料科学:硅酸盐
CiteScore
10.70
自引率
12.30%
发文量
863
审稿时长
35 days
期刊介绍: The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.
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