An n‐type Polymer with High‐Performance Thermoelectric Properties by Solvent‐Mediated Oxidation

IF 26 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2025-10-11 DOI:10.1002/aenm.202502996

Zhijun Chen, Yue Wen, Yuzhi Hu, Chunlin Wu, Cheng Xu, Tongwei Zhang, Qingyang Ni, Sunmi Shin, Kuan Sun, Jianyong Ouyang

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引用次数: 0

Abstract

Organic thermoelectric (OTE) materials are interesting because they can have the merits of high mechanical flexibility, lightweight, and low or no toxicity over inorganic thermoelectric (TE) materials. Both p‐ and n‐type OTE materials are required for efficient TE conversion. But the performance of n‐type OTE materials lags well behind their p‐type counterparts. Herein, the great enhancement in the TE properties of poly(benzodifurandione) (PBFDO) films through a treatment with a solution of FeCl3 with dimethyl sulfoxide (DMSO) as the solvent is reported. This can greatly enhance the Seebeck coefficient and thus the power factor of PBFDO. The optimal power factor is 306.1 ± 8.7 µW m−1 K−2, and the corresponding electrical conductivity and Seebeck coefficient are 970 ± 26 S cm−1 and −56.2 ± 1.6 µV K−1, respectively. This is the highest power factor for n‐type OTEs. The corresponding ZT value is 0.27 ± 0.01 at room temperature. The TE properties depend on the solvent of the FeCl3 solution. A solvent with a high donor number, like DMSO, can share its electrons with PBFDO. It can hinder the dedoping of PBFDO by Fe3+ and thus greatly enhance the Seebeck coefficient while not lowering the electrical conductivity too much.

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溶剂介导氧化制备具有高性能热电性能的n型聚合物

有机热电（OTE）材料是一种有趣的材料，因为它们具有高机械柔韧性、重量轻、低毒性或无毒性等优点。高效率的TE转换需要p型和n型OTE材料。但n型OTE材料的性能远远落后于p型OTE材料。本文报道了以二甲基亚砜（DMSO）为溶剂的FeCl3溶液处理后，聚苯并二呋喃二酮（pbdo）薄膜的TE性能得到了极大的提高。这可以大大提高塞贝克系数，从而提高pbdo的功率因数。最佳功率因数为306.1±8.7µW m−1 K−2，电导率为970±26 S cm−1，Seebeck系数为- 56.2±1.6µV K−1。这是n型ote的最高功率因数。室温下对应的ZT值为0.27±0.01。TE的性质取决于FeCl3溶液的溶剂。具有高给体数的溶剂，如DMSO，可以与pbdo共享电子。它可以阻碍Fe3+对pbdo的脱掺杂，从而大大提高塞贝克系数，同时不会使电导率降低太多。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.