Facile fabrication of highly flexible,porous PEDOT:PSS/SWCNTs films for thermoelectric applications  

作　　者：Fu-Wei Liu Fei Zhong Shi-Chao Wang Wen-He Xie Xue Chen Ya-Ge Hu Yu-Ying Ge Yuan Gao Lei Wang Zi-Qi Liang 刘福伟;钟飞;王世超;谢文合;陈雪;胡亚歌;葛钰莹;郜源;王雷;梁子骐(College of Physics and Electronic Engineering,Xinyang Normal University,Xinyang 464000,China;Shenzhen Key Laboratory of Polymer Science and Technology,College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,China;Department of Materials Science,Fudan University,Shanghai 200433,China)

机构地区：[1]College of Physics and Electronic Engineering,Xinyang Normal University,Xinyang 464000,China [2]Shenzhen Key Laboratory of Polymer Science and Technology,College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,China [3]Department of Materials Science,Fudan University,Shanghai 200433,China

出　　处：《Chinese Physics B》2022年第2期50-59,共10页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.U2004174,51773118,and 51673044)。

摘　　要：High-performance organic composite thermoelectric(TE)materials are considered as a promising alternative for harvesting heat energy.Herein,composite films of poly(3,4-ethyienedioxythiophene):poly(styrene sulfonate)/single-walled carbon nanotubes(PEDOT:PSS/SWCNTs)were fabricated by utilizing a convenient solution mixing method.Thereafter,the as-prepared hybrid films were treated using sulfuric acid(H_(2)SO_(4))to further optimize the TE performance.Film morphological studies revealed that the sulfuric acid treated PEDOT:PSS/SWCNTs composite samples all possessed porous structures.Due to the successful fabrication of highly conductive networks,the porous nano-architecture also exhibited much more excellent TE properties when compared with the dense structure of the pristine samples.For the post-treated sample,a high power factor of 156.43μW·m^(-1)·K^(-2)can be achieved by adjusting the content of CNTs,which is approximately 3 orders of magnitude higher than that of the corresponding untreated samples(0.23μW·m^(-1)·K^(-2)).Besides,the obtained films also showed excellent mechanical flexibility,owing to the porous nanostructure and the strong p–p interactions between the two components.This work indicates that the H_(2)SO_(4) treatment could be a promising strategy for fabricating highly-flexible and porous PEDOT:PSS/SWCNTs films with high TE performances.

关 键 词：porous film thermoelectric properties FLEXIBILITY 

分 类 号：TB383.2[一般工业技术—材料科学与工程]