文章信息/Info

Title:

Performance Optimization of Bismuth Telluride Thermoelectric Materials and Its Application in Waste Heat Recovery of Ships

文章編號:

1674-3962(2022)12-1049-06

作者:

楊立澤1; 周云1; 張德2; 周小元2

（1. 上海海事大學(xué)海洋科學(xué)與工程學(xué)院，上海 201306）（2. 重慶大學(xué)物理學(xué)院，重慶 401331）

Author(s):

YANG Lize1; ZHOU Yun1; ZHANG De2; ZHOU Xiaoyuan2

（1.College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China) （2.College of Physics, Chongqing University, Chongqing 401331, China）

關(guān)鍵詞:

Bi2Te3; 熱電性能; 納米化; 摻雜; 溫差發(fā)電

Keywords:

Bi2Te3;  thermoelectric properties;  nanosized;  doping;  temperature difference power generation

分類號:

TQ174；TN34

DOI:

10.7502/j.issn.1674-3962.202208010

文獻(xiàn)標(biāo)志碼:

A

摘要:

碲化鉍(Bi2Te3)熱電材料是能將熱能與電能直接進(jìn)行轉(zhuǎn)換的功能材料，廣泛應(yīng)用于固態(tài)制冷、廢熱回收、空間發(fā)電等領(lǐng)域。目前本領(lǐng)域內(nèi)的研究熱點集中在如何提高Bi2Te3熱電材料的能量轉(zhuǎn)換效率上。在簡述近年來Bi2Te3基熱電材料研究進(jìn)展的基礎(chǔ)上，重點介紹了納米化改性、摻雜改性的方法對Bi2Te3熱電性能的優(yōu)化，并分析其影響機制，結(jié)果表明，納米結(jié)構(gòu)化和摻雜均能較大程度提高Bi2Te3的熱電性能。進(jìn)一步采用Bi2Te3基熱電器件，設(shè)計模擬了船舶柴油發(fā)電機煙氣余熱回收利用系統(tǒng)，并通過搭建測試平臺研究該裝置的發(fā)電效率，為船舶溫差發(fā)電裝置的發(fā)展提供實驗基礎(chǔ)。最后對Bi2Te3熱電材料的發(fā)展趨勢進(jìn)行了展望。

Abstract:

Bismuth telluride (Bi2Te3) thermoelectric material is a functional material which can directly convert thermal energy and electric energy. It is widely used in solid state refrigeration, waste heat recovery and space power generation. At present, the research focuses in this field is how to improve the energy conversion efficiency of Bi2Te3 thermoelectric materials. In this paper, the research progress of Bi2Te3 based thermoelectric materials in recent years is briefly described, and the optimization of the thermoelectric properties of Bi2Te3 by nano-modification and doping modification methods is introduced, and the influencing mechanism is analyzed. The results show that the nano-structure and doping can improve the thermoelectric properties of Bi2Te3 to a large extent. Using Bi2Te3 based thermoelectric device, the flue gas waste heat recovery and utilization system of marine electric diesel engine is designed and simulated, and the power generation efficiency of the device is studied by building a test platform, which provides an experimental basis for the development of marine thermoelectric device. Finally, the development trend of Bi2Te3 thermoelectric material is prospected.