The three‐dimensional morphology has sufficient interface contact and can be in favor of the electronic transport process. In this work, the demand for high‐performance electrodes such as energy storage devices has been designed. Polypyrrole and tungsten oxide composite materials (PPy‐WO₃) have been synthesized by cyclic voltammetry (CV) technology at −0.6 to 0.9 V versus saturated calomel electrode (SCE) for 20 cycles. The PPy‐WO₃^20 mV/s, PPy‐WO₃^60 mV/s, and PPy‐WO₃^120 mV/s electrodes have been prepared by CV technology at sweep rates of 20, 60, and 120 mV/s. The influences of scan rate on morphologies and charge storage properties of the composites are discussed. Among them， a three‐dimensional flake structure for PPy‐WO₃^{20 mV/s} with a size of up to several micrometers was synthesized. PPy‐WO₃^{20 mV/s} composites as electrode materials exhibit a wide charge storage potential window of 1.4 V (between −0.9 and 0.5 V vs. SCE) and a specific capacitance of 145.13 F/g at 1 mA/cm². Moreover, the long‐term stability of PPy‐WO₃^{20 mV/s} and PPy has been investigated in 5 M LiCl aqueous electrolyte. The stability of the materials can be improved by inorganic and organic composites.

中文翻译：

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电化学共沉积具有宽电势窗口的聚吡咯-氧化钨复合材料

三维形态具有足够的界面接触，可以促进电子传输过程。在这项工作中，已经设计了对高性能电极（例如储能设备）的需求。聚吡咯和氧化钨复合材料（PPy-WO ₃）已通过循环伏安（CV）技术在-0.6至0.9 V相对于饱和甘汞电极（SCE）的条件下合成了20个循环。聚吡咯-WO ₃ ^20毫伏/秒，聚吡咯-WO ₃ ^60毫伏/秒，和聚吡咯-WO ₃ ^{120毫伏/秒}电极已通过CV技术以20、60和120 mV / s的扫描速率制备。讨论了扫描速率对复合材料的形貌和电荷存储性能的影响。其中，合成了PPy-WO ₃ ^{20 mV / s}的三维片状结构，尺寸高达几微米。PPy-WO ₃ ^{20 mV / s}复合材料作为电极材料具有1.4 V的较宽电荷存储电势窗口（相对于SCE在-0.9和0.5 V之间），在1 mA / cm ^2时的比电容为145.13 F / g 。此外，PPy-WO ₃ ^{20 mV / s}的长期稳定性并在5 M LiCl水溶液中研究了PPy。无机和有机复合材料可以提高材料的稳定性。