Exceptional performance which derived from lab-scale electrodes used in electrochemical capacitors often fail to extrapolate to high mass loading conditions considering the trade-off relationship between penetration depth and charge transfer efficiency. A novel graphene/graphite/PPy(polypyrrole) composites fiber is fabricated with vertically aligned channels, offering fast diffusion pathways for the ion. By controlling the time of PPy electrodeposition, the trade-off between the PPy thickness (x) and the width of channels (y) is discussed referring to their electrochemical performance. Understanding the x-y dependent transport kinetics of the three-dimensional microstructural electrode help achieves a higher utilization of active materials. The fabricated all solid-state supercapacitor perform advanced energy density (0.117 mWh/cm²) and power density (26.7 mW/cm²). This study may also provide a guidance for the optimization of pore width and wall thickness of the three-dimensional electrode (or scaffold) design.

考虑到渗透深度和电荷转移效率之间的权衡关系，电化学电容器中使用的实验室规模电极产生的卓越性能通常无法外推到高质量负载条件。一种新型石墨烯/石墨/PPy（聚吡咯）复合纤维制造有垂直排列的通道，为离子提供快速扩散途径。通过控制 PPy 电沉积的时间，PPy 厚度 (x) 和通道宽度 (y) 之间的权衡将参考它们的电化学性能进行讨论。了解三维微结构电极的 xy 相关传输动力学有助于实现更高的活性材料利用率。制造的全固态超级电容器具有先进的能量密度（0.117 mWh/cm² ) 和功率密度 (26.7 mW/cm ² )。该研究也可为三维电极（或支架）设计的孔宽和壁厚的优化提供指导。