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热电PEDOT/Te纳米棒阵列复合薄膜的制备与表征

Preparation and Characterization of Thermoelectric PEDOT/Te Nanorod Array Composite Films.

作者信息

Ahn Hong-Ju, Kim Seil, Kim Kwang Ho, Lee Joo-Yul

机构信息

Electrochemistry Department, Korea Institute of Materials Science, Changwon 51508, Korea.

School of Materials Science and Engineering, Pusan National University, Busan 46241, Korea.

出版信息

Materials (Basel). 2021 Dec 25;15(1):148. doi: 10.3390/ma15010148.

DOI:10.3390/ma15010148
PMID:35009293
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8745889/
Abstract

In this study, we prepared Te nanorod arrays via a galvanic displacement reaction (GDR) on a Si wafer, and their composite with poly(3,4-ethylenedioxythiophene) (PEDOT) were successfully synthesized by electrochemical polymerization with lithium perchlorate (LiClO) as a counter ion. The thermoelectric performance of the composite film was optimized by adjusting the polymerization time. As a result, a maximum power factor (PF) of 235 µW/mK was obtained from a PEDOT/Te composite film electrochemically polymerized for 15 s at room temperature, which was 11.7 times higher than that of the PEDOT film, corresponding to a Seebeck coefficient () of 290 µV/K and electrical conductivity () of 28 S/cm. This outstanding PF was due to the enhanced interface interaction and carrier energy filtering effect at the interfacial potential barrier between the PEDOT and Te nanorods. This study demonstrates that the combination of an inorganic Te nanorod array with electrodeposited PEDOT is a promising strategy for developing high-performance thermoelectric materials.

摘要

在本研究中，我们通过在硅片上的电化位移反应（GDR）制备了碲纳米棒阵列，并以高氯酸锂（LiClO）作为抗衡离子，通过电化学聚合成功合成了它们与聚（3,4-乙撑二氧噻吩）（PEDOT）的复合材料。通过调整聚合时间优化了复合膜的热电性能。结果，在室温下电化学聚合15 s的PEDOT/碲复合膜获得了235 μW/mK的最大功率因子（PF），比PEDOT膜高11.7倍，对应塞贝克系数（）为290 μV/K，电导率（）为28 S/cm。这种出色的PF归因于PEDOT和碲纳米棒之间界面势垒处增强的界面相互作用和载流子能量过滤效应。本研究表明，无机碲纳米棒阵列与电沉积PEDOT的组合是开发高性能热电材料的一种有前途的策略。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/c667350470f9/materials-15-00148-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/09d451ebff95/materials-15-00148-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/7bc25b726241/materials-15-00148-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/bdf2ce8d705e/materials-15-00148-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/79e062a563cb/materials-15-00148-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/d3be58b56e36/materials-15-00148-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/bb95c1a82c5b/materials-15-00148-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/52717a887156/materials-15-00148-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/420399cb069f/materials-15-00148-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/c667350470f9/materials-15-00148-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/09d451ebff95/materials-15-00148-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/7bc25b726241/materials-15-00148-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/bdf2ce8d705e/materials-15-00148-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/79e062a563cb/materials-15-00148-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/d3be58b56e36/materials-15-00148-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/bb95c1a82c5b/materials-15-00148-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/52717a887156/materials-15-00148-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/420399cb069f/materials-15-00148-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/912e/8745889/c667350470f9/materials-15-00148-g009.jpg

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