Bi2Te3基柔性热电材料的3D打印低成本可控制备与结构调控特性研究

Bi2Te3基热电材料是废热温差发电应用中最具研究价值的室温热电材料之一。利用3D打印技术能够根据热源外部尺寸高效、低成本制备形状贴合的热电材料，有利于热能的转换利用，十分适合推广于新能源领域。针对热电材料参数间解耦困难，热电优值提升所面临的瓶颈对3D打印技术提出的挑战，以3D打印结构调控与热电优值关联机制为科学问题对象，采用实验室材料制备及实验室表征测试方法，研究Bi2Te3基粉体制备对结构调控及热电优值的影响规律，研究3D打印参数结构调控对热电优值影响规律，建立3D打印结构调控与热电优值关联模型。项目预期将建立Bi2Te3基热电材料3D打印的设计原则和理论依据，研究成果作为3D打印技术推广到热电材料生产领域的基础和保障，在提升3D打印结构及性能调控方法、热电优值提升机制等多个研究领域具有显著的学术价值和科学意义。

Bismuth telluride based thermoelectric materials is one of the new energy thermoelectric power generation the most research value of thermoelectric materials, the use of 3D printing technology for preparation of thermoelectric materials according to the external dimensions of thermoelectric materials heat source with high efficiency and low cost preparation of the perfect fit, this technique is very suitable for promotion in the field of new energy. The thermoelectric material parameters of decoupling difficult, ZT value problem of promotion of 3D printing technology to print the 3D challenge, the regulation of structure and the figure of merit association mechanism of scientific subject, characterized by laboratory testing method of material preparation and laboratory study on the influence of the preparation of Bi2Te3 powder on the structure and regulation of power excellent value, research on 3D printing parameters regulating value of influence on the thermoelectric, establishment of 3D printing structure regulation and ZT value relevance model. The design principle and the theoretical basis of the project is expected to establish a bismuth telluride based thermoelectric material 3D printing, foundation and guarantee of research results as 3D printing technology applied to thermoelectric material production field, has significant academic value and scientific significance in improving the structure and properties of 3D print control methods, ZT value promotion mechanism of multiple research field.