To enhance the electrochemical performance of flexible solid-state supercapacitors, the effective utilization of pseudocapacitance, induced by redox components, is imperative. In this study, we developed a polyacrylamide (PAM)/PEG binary intercrossing hydrogel skeleton, using the acrylamide in situ polymerization method. We incorporated 3-aminophenol (3-AP) and acid into the system to leverage its redox surface capacitance and improve its electrolyte morphology, thereby increasing the specific capacitance of the device. Additionally, it is observed that the interconnected macromolecular scaffold can effectively decrease the diffusion distance of electrolyte ions, leading to an optimal pH value and 3-AP concentration achieved via the oxidation-reduction process. At a scanning current of 0.1 A g⁻¹, the specific capacitance reaches an impressive 120.6 F g⁻¹. Furthermore, a notable increase in both energy density and power density is achieved, reaching 6.6 W h kg⁻¹ and 625 W kg⁻¹, respectively. This groundbreaking approach to enhancing capacitance in quasi-solid hydrogel supercapacitors offers a promising avenue for further exploration.

为了提高柔性固态超级电容器的电化学性能，有效利用氧化还原成分引起的赝电容势在必行。在这项研究中，我们利用丙烯酰胺原位聚合方法开发了聚丙烯酰胺（PAM）/PEG二元交叉水凝胶骨架。我们将3-氨基苯酚（3-AP）和酸加入到系统中，以利用其氧化还原表面电容并改善其电解质形态，从而提高器件的比电容。此外，观察到互连的大分子支架可以有效地减少电解质离子的扩散距离，从而通过氧化还原过程实现最佳的pH值和3-AP浓度。扫描电流为0.1 A g ^-1，比电容达到令人印象深刻的120.6 F g ^-1。此外，能量密度和功率密度均显着增加，分别达到6.6 W h kg ^-1和625 W kg ^-1。这种增强准固体水凝胶超级电容器电容的突破性方法为进一步探索提供了一条有希望的途径。