电子元件与材料2025，Vol.44Issue(7)：811-819,9.DOI:10.14106/j.cnki.1001-2028.2025.0078
直接墨水书写3D打印制备Sb2Te3基热电材料及其电学性能研究
Fabrication and electrical properties of 3D printed Sb2Te3-based thermoelectric materials by direct ink writing
摘要
Abstract
To address the material performance degradation caused by the introduction of the organic additives and functional fillers in the traditional preparation processes,as well as the complex synthesis procedures of inorganic binders,a two-step ball milling method for developing binder-free Sb2Te3-based thermoelectric material inks was proposed,and shaping of this thermoelectric material was achieved through direct ink writing(DIW)3D printing technology.Homogeneous ink was first prepared via the two-step ball milling process,and the effects of pre-ball milling time on the particle size of the powder,effect of the ball milling duration on the rheological properties of the ink,and effect of the sintering temperature on the electrical transport performance of the printed samples were investigated.Experimental results demonstrated that 1 h of pre-milling yielded uniformly distributed powders with an average particle size below 52 μm,while 36 h of wet ball milling endowed the ink with both high viscosity and significant shear-thinning behavior.After sintering at 450 ℃ for 2 h,complete alloying was achieved,resulting in a peak power factor of 123.54 μW·m-1·K-2,which is 83-fold improvement compared to the samples sintered at 300 ℃ for 2 h.In this work,a binder-free Sb2Te3 ink system was successfully developed,the synergistic regulation mechanism of ball milling and sintering was elucidated,and a novel material system and process window for additive manufacturing of thermoelectric devices with complex-structure was provided.关键词
热电材料/直接墨水书写/无粘结剂墨水/3D打印/Sb2Te3Key words
thermoelectric materials/direct ink writing/binder-free ink/3D printing/Sb2Te3分类
通用工业技术引用本文复制引用
张津津,李芮鸽,魏宾,木二珍..直接墨水书写3D打印制备Sb2Te3基热电材料及其电学性能研究[J].电子元件与材料,2025,44(7):811-819,9.基金项目
国家自然科学基金(NO.12304040) （NO.12304040）
