Roselló-Márquez Gemma, García-García Dionisio Miguel, Cifre-Herrando Mireia, García-Antón José
Ingeniería Electroquímica y Corrosión, Instituto Unversitario de Seguridad Industrial, Radiofísica y Medioambiental, Universitat Politècnica de València, C/Camino de Vera s/n, 46022, Valencia, Spain.
Heliyon. 2024 Dec 10;10(24):e41075. doi: 10.1016/j.heliyon.2024.e41075. eCollection 2024 Dec 30.
In this research work, four distinct WO electrodes were synthesized and coated with three different polymers, known as polypyrrole (PPy), poly(3,4-ethylenedioxythiophene) in poly(4-styrenesulfonate) (PEDOT:PSS) and polyaniline (PANi), using electropolymerization techniques. The morphological features of the samples were thoroughly characterized through Field Emission Scanning Electron Microscopy (FE-SEM) and Atomic Force Microscopy (AFM) analyses. Additionally, contact angle measurements and electrochemical characterizations were used to verify the performance of each electrode, aiding in the prediction of their suitability for energy storage applications in lithium-ion batteries. The electrodes were subsequently employed as anodes in lithium-ion batteries, and charge-discharge cycles were performed to analyze its specific capacity, and the Electrochemical Impedance Spectroscopy (EIS) technique was employed to analyze its behavior both before and after cycling. The results revealed superior performance for WO electrodes with PEDOT:PSS coating electropolymerized during 100 min at 0.4 mA. This comprehensive investigation not only sheds light on the synthesis and morphological characteristics of WO electrodes but also highlights the crucial role of PEDOT:PSS in enhancing electrochemical behavior for efficient energy storage applications.
在这项研究工作中，使用电聚合技术合成了四种不同的WO电极，并分别用三种不同的聚合物进行了涂层处理，这三种聚合物分别是聚吡咯（PPy）、聚（4-苯乙烯磺酸盐）中的聚（3,4-乙撑二氧噻吩）（PEDOT:PSS）和聚苯胺（PANi）。通过场发射扫描电子显微镜（FE-SEM）和原子力显微镜（AFM）分析对样品的形态特征进行了全面表征。此外，通过接触角测量和电化学表征来验证每个电极的性能，以辅助预测它们在锂离子电池储能应用中的适用性。随后将这些电极用作锂离子电池的阳极，并进行充放电循环以分析其比容量，同时采用电化学阻抗谱（EIS）技术分析其循环前后的行为。结果表明，在0.4 mA下电聚合100分钟的PEDOT:PSS涂层的WO电极具有优异的性能。这项全面的研究不仅揭示了WO电极的合成和形态特征，还突出了PEDOT:PSS在增强电化学行为以实现高效储能应用方面的关键作用。
