Development of copper-stabilized conducting-polymer/polyoxometalate hybrid materials for effective electrochemical charging

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• 作者：Lidia Adamczyk
• 关键词：Conducting polymer ; Polyoxometalates ; Battery ; Surface modification
• 刊名：Journal of Solid State Electrochemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：21
• 期：1
• 页码：211-222
• 全文大小：2045KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Physical Chemistry; Electrochemistry; Energy Storage; Characterization and Evaluation of Materials; Analytical Chemistry; Condensed Matter Physics;
• 出版者：Springer Berlin Heidelberg
• ISSN：1433-0768
• 卷排序：21

文摘

A hybrid organic-inorganic material composed of poly (3,4-ethylenedioxythiophene), PEDOT, derivatized with 4-(pyrrol-e1-yl) benzoic acid, PyBA, and Keggin-type copper (II)-salt of H₃PMo₁₂O₄₀ has been proposed here. Such features as good electronic conductivity of PEDOT, hydrophilic and coordination capabilities of PyBA, the ability of copper (II) ions to link PyBA carboxylic groups, and phosphomolybdate anionic sites, as well as high protonic and mixed-valence conductivities of H₃PMo₁₂O₄₀ have been explored here to produce a stable composite material charcterized by reasonable charge propagation dynamics. Characterization and formation of the hybrid ca. 0.6 μm thick PEDOT/PyBA-Cu_xH_yPMo₁₂O₄₀ films have been asessed by FTIR, XRD, AFM, SEM, as well as using electrochemical methods. Among important feautures of the proposed hybrid system is the ability to undergo reversible charging/discharhging (both under voltammetric and galvanostatic conditions) in a manner analogous to what is observed in battery-type cells. Typical parameters, such as specific capacity, energy, and power densities, are provided and discussed.