物理化学学报 >> 2018, Vol. 34 >> Issue (11): 1211-1220.doi: 10.3866/PKU.WHXB201804095

所属专题: 庆祝李永舫院士七十华诞特刊

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导电高分子的最近进展

欧阳建勇*()   

  • 收稿日期:2018-02-22 发布日期:2018-04-17
  • 通讯作者: 欧阳建勇 E-mail:mseoj@nus.edu.sg
  • 作者简介:Prof. Jianyong Ouyang received his PhD, master and bachelor degrees from the Institute for Molecular Science in Japan, the Institute of Chemistry of the Chinese Academy of Science, and the Tsinghua University in Beijing, respectively. He worked as an assistant professor at the Japanese Advanced Institute of Science and Technology and a postdoctoral researcher at the University of California, Los Angeles (UCLA) before joining the National University of Singapore as an assistant professor in 2006. He was promoted to associate professor in 2012. His research interests include flexible electronics and energy materials and devices

Recent Advances of Intrinsically Conductive Polymers

Jianyong OUYANG*()   

  • Received:2018-02-22 Published:2018-04-17
  • Contact: Jianyong OUYANG E-mail:mseoj@nus.edu.sg

摘要:

因为导电高分子结合了金属与塑料的优点,他们一直受到很大的关注。但是他们的应用受到一些因素的影响,包括他们的电学性质,稳定性和可加工性。近来,导电高分子的性能得到很大的提高。他们在许多领域的重要应用被论证,比如透明电极,可拉伸电极,神经界面,热电转换和能量储存。这篇文章简单综述了导电高分子的电导提高和它们在热电转换,超级电容器和电池的应用。

关键词: 导电高分子, 透明电极, 神经界面, 热电, 能量储存

Abstract:

Intrinsically conductive polymers are a class of exciting materials since they combine the advantages of both metals and plastics. But their application is limited due to the issues related to their electronic properties, stability and processibility. For example, although polyacetylene can have electrical conductivity comparable to metals, it degrades fast in air. Most of the conductive polymers in the conductive state, such as polypyrrole and polythiophene, cannot be dispersed in any solvent and cannot be turned to a melt. It is thus difficult to process them into thin films with good quality, while thin films with good quality are important for many applications. In terms of the materials processing, polyaniline (PANi) and poly(3, 4-ethylenedioxythiophene) (PEDOT) have gained great attention. PANi doped with some large cations can be dispersed in some toxic organic solvents, and poly(3, 4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) can be dispersed in water and some polar organic solvents. But the PANi and PEDOT:PSS films prepared from their solutions are usually low. Recently, great progress was made in improving the properties of intrinsically conductive polymers. The conductivity of PEDOT:PSS can be enhanced from 10-1 S·cm-1 to > 4000 S·cm-1 through the so-called "secondary doping". The high conductivity together with the solution processibility enables the application of conductive polymers in many areas, such as electrodes and thermoelectric conversion. In addition, due to their electrochemical activity, conductive polymers or their composites with inorganic materials can have high capacity of charge storage. Conductive polymers can also be added into the electrodes of batteries, because they can facilitate the charge transport and alleviate the large volume change problem of silicon electrode of batteries. It has been demonstrated that conductive polymers can have important application in many areas, such as transparent electrode, stretchable electrode, neural interfaces, thermoelectric conversion and energy storage system. This article provides a brief review on the enhancement of the electrical conductivity of intrinsically conductive polymers and their application as electrodes and in thermoelectric conversion, supercapacitors and batteries.

Key words: Conductive polymer, Transparent electrode, Neural interface, Thermoelectric, Energy storage

MSC2000: 

  • O646