纳米热电材料的制备及性能优化研究
1. 南昌工程学院, 研究生院, 江西南昌 330099
2. 江西省精密驱动与控制重点实验室, 江西南昌 330099
| 摘 要： | 热电材料具有能够直接将热能和电能进行相互的优势，引起了科技工作者的广泛关注，其中的中低温Bi2Te3基热电材料因其在室温范围内具有较高的热电优值而受到特别重视。湿化学法作为一种有效的合成纳米热电材料方法而得到广泛应用，具有工艺设备简单、反应温度低、能耗低、产率高等优点。因此本文就对Bi2Te3基热电材料的湿化学制备方法进行了分析研究，主要方法为低温低压湿化学法（常规低温湿化学法、微波辅助湿化学法、超声波辅助湿化学法）以及高温高压湿化学法（水热法、溶剂热法），并利用XRD、SEM、TEM等测试手段对合成产物进行了物相分析和微观形貌分析，探索了Bi2Te3基热电材料合成过程中相关的化学反应机理。通过改变实验条件，希望能进一步优化其制备工艺，分析化学合成的反应机制。本文通过湿化学法研究纳米粉体形貌的影响因素，对制备出结构可控、分散性好、纯度高的 Bi2Te3基热电材料具有重要意义，同时探讨了热电输运性能的优化机理，并展望了纳米热电材料的应用前景及发展趋势。 |
| 关 键 词： | 纳米结构; 热电材料; 制备方法; 性能优化 |
| DOI： | 10.57237/j.se.2023.04.002 |
View:
Downloads:
收稿日期: 2023-07-25
接受日期: 2023-08-31
在线出版日期: 2023-09-08
Study on Preparation and Performance Optimization of Nano-thermoelectric Materials
Graduate School, Nanchang Institute of Technology, Nanchang 330099, China
| Abstract: | Thermoelectric materials have the advantage of direct interaction between thermal energy and electric energy, which has attracted extensive attention. Among them, Bi2Te3-based thermoelectric materials with medium and low temperature have attracted special attention because of their high thermoelectric figure of merit in the room temperature range. Wet chemical method is widely used as an effective method to synthesize nano thermoelectric materials, which has the advantages of simple process equipment, low reaction temperature, low energy consumption and high yield. Therefore, the wet chemical preparation methods of Bi2Te3-based thermoelectric materials are analyzed and studied in this paper. The main methods are low-temperature and low-pressure wet chemical method (conventional low-temperature wet chemical method, microwave-assisted wet chemical method, ultrasonic-assisted wet chemical method) and high-temperature and high-pressure wet chemical method (hydrothermal method, solvothermal method). The phase analysis and micro-morphology analysis of the synthesized products are carried out by means of XRD, SEM and TEM, and the related chemical reaction mechanism in the synthesis process of Bi2Te3-based thermoelectric materials is explored. By changing the experimental conditions, we hope to further optimize the preparation process and analyze the reaction mechanism of chemical synthesis. In this paper, the influence factors of nano-powder morphology are studied by wet chemical method, which is of great significance to prepare Bi2Te3-based thermoelectric materials with controllable structure, good dispersion and high purity. At the same time, the optimization mechanism of thermoelectric transport performance is discussed, and the application prospect and development trend of nano-thermoelectric materials are prospected. |
| Keywords: | Nanostructure; Thermoelectric Material; Preparation Method; Performance Optimization |
参考文献
| [1] | 郭涛, 李硕, 姚雅萱等. Bi-Te基薄膜热电材料的研究进展 [J]. 材料导报, 2022, 36 (04): 135-147. |
| [2] | Lu X, Zheng Q, Gu S, et al. Enhanced TE properties of Cu@Ag/Bi2Te3 nanocomposites by decoupling electrical and thermal properties [J]. Chinese Chemical Letters, 2020, 31 (03): 880-884. |
| [3] | Wang Yanan, Bourgès Cédric, Rajamathi Ralph, et al. The Effect of Reactive Electric Field-Assisted Sintering of MoS2/Bi2Te3 Heterostructure on the Phase Integrity of Bi2Te3 Matrix and the Thermoelectric Properties [J]. Materials Volume, 2021, 15 (1): 53. |
| [4] | 李雨, 杨皓月, 郑睿等. BiCuSeO硒氧化合物的微波超快合成及Bi, Cu空位对化合物电输运性能的影响 [J]. 中国有色金属学报, 2021, 31 (02): 410-418. |
| [5] | Yanhua J, Qinglin J, Hengda S, et al. Wearable Thermoelectric Materials and Devices for Self-Powered Electronic Systems. [J]. Advanced materials (Deerfield Beach, Fla.), 2021, 33 (42). |
| [6] | Gui Tang, Kefeng Cai, Jiaolin Cui, et al. Preparat-ion and thermoelectric properties of MoS2/Bi2Te3 nanocomposites [J]. Ceramics International, 2016, 42 (16): 17972-17977. |
| [7] | Jianping Zheng, Song Chen, et al. Preparation and thermoelectric properties of Bi2SexTe3−x bulk materials [J]. Ceramics International, 2017, 43 (8): 5920-5924. |
| [8] | Xiao-Lei S, Jin Z, Zhi-Gang C. Advanced Thermoelectric Design: From Materials and Structures to Devices. [J]. Chemical reviews, 2020, 120 (15): 7399-7515. |
| [9] | 刘海涛. Bi2Se3基低维纳米材料的生长及物性研究 [D]. 新疆大学, 2018. |
| [10] | 孙霆, 朱铁军, 赵新兵. 纳米结构Bi2Te3化合物的低温湿化学合成 [J]. 化学学报. 2005, 63 (16): 1515. |
| [11] | Saleemi M, Toprak S M, Li S, et al. Synthesis, processing, and thermoelectric properties of bulk nanostructured bismuth telluride (Bi2Te3) [J]. Journal of Materials Chemistry, 2012 (22): 725-730. |
| [12] | R V A, V M S, M V. Tailoring Thermoelectric Properties through Structure and Morphology in Chemically Synthesized n-Type Bismuth Telluride Nanostructures. [J]. Inorganic chemistry, 2017, 56 (11). |
| [13] | 张海宁. 微波湿化学法合成Bi2Se3及Bi2Te3热电材料 (D). 电子科技大学, 2014. |
| [14] | Chen S, Cai K, Shen S. Synthesis via a Microwave-Assisted Wet Chemical Method and Characterization of Bi2Te3 with Various Morphologies [J]. Journal of Electronic Materials, 2016, 45: 1425-1432. |
| [15] | Pradhan S, Das R, Bhar R, et al. A simple fast microwave-assisted synthesis of thermoelectric bismuth telluride nanoparticles from homogeneous reaction-mixture [J]. Journal of Nanoparticle Research, 2017, 19 (2). |
| [16] | Bejan H, Hazal B, Moon P, et al. Minute-Made, High-Efficiency Nanostructu-red Bi2Te3 via High-Throughput Green Solution Chemical Synthesis [J]. Na-nomaterials, 2021, 11 (8): 2053. |
| [17] | Huilin F, Pengcheng M, Hongyu S, et al. Recent advances of metal telluride anodes for high-performance lithium/sodium-ion batteries. [J]. Materials horizons, 2022, 9, 524-546. |
| [18] | Hamta Mansouri. Effect of Hydrothermal Synthesis Te-mperature on the Microstructural and Thermoelectric Characterist-ics of Thermally Deposited Bi0.5Sb1.5Te3 Thin Films [J]. Joumal of Ele-ctronic Materials (2022), 51: 495-507. |
| [19] | Tony Kristiantoro, Dedi, Vivi Fauzia. The influence of Dy concentration on the thermoelectric properties of n-type Dy-doped Bi2Te3 pellets prepared by hydrothermal and carbon burial sintering [J]. Journal of Physics and Chemistry of Solids. 2021, 158: 110241. |
| [20] | Saberi Yasaman; Sajjadi Seyed Abdolkarim; Mansouri Hamta. Comparison of thermoelectric properties of Bi2Te3 and Bi2Se0.3Te2.7 thin film materials synthesized by hydrothermal process and thermal evaporation [J]. Ceramics Internationa, 2021, 47 (8): 11547-11559. |
| [21] | Yuan Wang, Wei-Di Liu, et al. High Porosity in Nanostructured n-Type Bi2Te3 Obtaining Ultralow Lattice Thermal Conductivity [J]. ACS Applied Materials & Interfaces, 2019, 11: 31237-31244. |
| [22] | Deyu Bao, Jie Chen, Yuan Yu, et al. Texture-dependent thermoelectric properties of nano-structured Bi2Te3 [J]. Chemical Engineering Journal, 2020, 388: 124295. |
| [23] | 李晓龙, 周春生, 杨超普等. 热处理对热电Bi2Te2.7Se0.3“纳米花”材料形貌的影响 [J]. 稀有金属材料与工程, 2021, 50 (11): 3966-3969. |
