Electrochemical Effects in Thermoelectric Polymers

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• 作者：William B. Chang ; Haiyu Fang ; Jun Liu ; Christopher M. Evans ; Boris Russ ; Bhooshan C. Popere ; Shrayesh N. Patel ; Michael L. Chabinyc ; Rachel A. Segalman
• 刊名：ACS Macro Letters
• 出版年：2016
• 出版时间：April 19, 2016
• 年：2016
• 卷：5
• 期：4
• 页码：455-459
• 全文大小：299K
• 年卷期：0
• ISSN：2161-1653

文摘

Conductive polymers such as PEDOT:PSS hold great promise as flexible thermoelectric devices. The thermoelectric power factor of PEDOT:PSS is small relative to inorganic materials because the Seebeck coefficient is small. Ion conducting materials have previously been demonstrated to have very large Seebeck coefficients, and a major advantage of polymers over inorganics is the high room temperature ionic conductivity. Notably, PEDOT:PSS demonstrates a significant but short-term increase in Seebeck coefficient which is attributed to a large ionic Seebeck contribution. By controlling whether electrochemistry occurs at the PEDOT:PSS/electrode interface, the duration of the ionic Seebeck enhancement can be controlled, and a material can be designed with long-lived ionic Seebeck enhancements.