文章信息/Info

Title:

Study on Preparation and Properties of Te Nanowires/ PEDOT∶PSS Thermoelectric Films by Electrospinning

文章編號:

1674-3962(2021)07-0518-07

作者:

孫曉萌1; 孫婷婷1; 吳鑫1; 邱小小1; 王連軍1; 2; 江莞2; 3

（1. 東華大學材料科學與工程學院 纖維材料改性國家重點實驗室，上海 201620）（2. 東華大學 先進玻璃制造技術教育部工程研究中心，上海 201620）（3. 東華大學 功能材料研究所，上海 201620）

Author(s):

SUN Xiaomeng1; SUN Tingting1; WU Xin1; QIU Xiaoxiao1;  WANG Lianjun1; 2; JIANG Wan2; 3

(1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials， College of Material Science and Engineering, Donghua University, Shanghai 201620, China) (2. Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Donghua University, Shanghai 201620, China) (3. Institute of Functional Materials, Donghua University, Shanghai 201620, China)

關鍵詞:

PEDOT∶PSS; Te納米線; 熱電薄膜; 靜電紡絲; 可穿戴

Keywords:

PEDOT∶PSS;  Te nanowire;  thermoelectric films;  electrospinning;  wearable

分類號:

TN304.055;TN304.25

DOI:

10.7502/j.issn.1674-3962.201912005

文獻標志碼:

A

摘要:

近年來，用于健康、環境監測的可穿戴傳感器和電子設備發展迅速，由此對可持續能源收集與供應技術提出了新的要求。有機柔性熱電材料和裝置能夠將熱量直接轉換成電能，且憑借其固有的柔韌性、低毒性和簡單易得等優點，受到越來越多的關注。靜電紡絲技術是制備納米纖維膜的常用方法，具有簡單、通用、易于控制等優點，在柔性電子器件領域具有廣闊的應用前景。本研究采用靜電紡絲結合原位合成的方法制備了碲（Te）納米線/PEDOT∶PSS熱電納米纖維薄膜，當碲源濃度為5%時（質量分數），Te納米線長度最長，纖維薄膜的熱電性能最佳。其電導率為1.62 S·cm-1，塞貝克系數為22.43 μV·K-1，熱導率僅為~0.08 W·m-1·K-1，熱電優值（ZT值）達0.112×10-3。基于此纖維薄膜成功制備了柔性熱電器件，當薄膜條數為4時，在溫差ΔT=45 K時，其輸出電壓為3.54 mV。

Abstract:

In recent years, the rapid development of wearable sensors and electronic devices for health and environmental monitoring has put forward new requirements for sustainable energy collection and supply technologies. Organic flexible thermoelectric(TE) materials and devices are capable of converting heat directly into electricity, and have attracted increasing attention due to their inherent advantages of flexibility, affordability and low toxicity. Electrostatic spinning technology is a common method to prepare nanofiber membrane, which has the advantages of simplicity, universality and easy control, and has a broad application prospect in the field of flexible electronic devices. Here, Tellurium(Te) nanowires / PEDOT∶PSS thermoelectric nanofiber thin films were prepared by electrospinning and in�瞫itu synthesis. When the content of tellurium source is 5wt%, the length of Te nanowires is the longest and the thermoelectric performance of nanofiber film is the best. The conductivity is 1.62 S·cm-1, the Seebeck coefficient is 22.43 μV·k-1, the thermal conductivity is only ~0.08 W·m-1·K-1, and the ZT value reaches 0.112×10-3. Finally, a flexible device consisting of 4 strips was successfully prepared using the as-prepared composite film，and can produce an output voltage of 3.54 mV at a 45 K temperature difference.