| NiCoP/聚吡咯/碳布的电沉积制备及其电化学性能 |
| Preparation and electrochemical properties of NiCoP/polypyrrole/carbon cloth by electrodeposition |
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| 摘要: 通过一步电沉积法在碳布(CC)表面构建了镍钴双金属磷化物(NiCoP)与聚吡咯(PPy)复合的NiCoP/PPy/CC材料，并探究了吡咯的添加量对材料形貌、结构以及性能的影响。当吡咯的浓度为 3 mol·L-1时制备的 NiCoP/PPy/CC-3电极的电化学性能最佳，其在三电极体系中表现出较好的电化学性能，在 4.0 mA·cm-2的电流密度下，该电极的面积比电容为 1 068.11 mF·cm-2，对应的质量比电容为508.62 F·g-1，并且在8.0 mA·cm-2的电流密度下进行6 000次循环后的电容保持率为90.1%。将该电极应用于柔性非对称超级电容器中，该柔性器件可实现180°的弯折，并且在8.0 mA·cm-2的电流密度下进行10 000次循环后，器件的初始比电容仍保持88.6%。此外，将2个非对称超级电容器串联可以有效地点亮发光二极管(LED)。 |
| 关键词: 超级电容器|过渡金属磷化物|电沉积|聚吡咯|碳布 |
| 基金项目: 国家自然科学基金项目(No.62174087)资助。 |
| Abstract: The NiCoP/PPy/CC composite material composed of nickel-cobalt bimetallic phosphide (NiCoP) and polypyrrole (PPy) was constructed on the surface of carbon cloth (CC) by one-step electrodeposition, and the effect of the addition amount of pyrrole on the morphology, structure, and properties of the material was investigated. When the concentration of pyrrole was 3 mol·L-1, the electrochemical performance of the NiCoP/PPy/CC-3 electrode was the best, with good electrochemical performance in a three-electrode system. At a current density of 4.0 mA·cm-2, the area-specific capacitance of the electrode was 1 068.11 mF·cm-2, and the corresponding mass-specific capacitance was 508.62 F·g-1. After 6 000 cycles at a current density of 8.0 mA·cm-2, the capacitance retention rate was 90.1%. The electrode was applied to a flexible asymmetric supercapacitor. The flexible device could achieve a 180° bending, and the initial specific capacitance of the device remained 88.6% after 10 000 cycles at a current density of 8.0 mA·cm-2. In addition, two asymmetric supercapacitors in series can effectively light up a yellow light-emitting diode (LED). |
| Keywords: supercapacitor|transition metal phosphide|electrodeposition|polypyrrole|carbon cloth |
| 投稿时间：2025-01-07 修订日期：2025-04-21 |
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