The increasing demand for portable and flexible energy storage devices drives the development of flexible electrodes and electrolytes. The aim of this work is to fabricate the flexible free-standing polyaniline/poly (vinyl alcohol) (PANI/PVA) composite electrode with good capacitance performance and shape memory behavior. The electrodes were fabricated by chemical oxidation polymerization of aniline in porous PVA (P-PVA) films. The morphology, electrochemical and mechanical properties of PANI/P-PVA electrodes were studied by scanning electron microscope, cyclic voltammetry, galvanostatic charge-discharge, and tensile test etc. The results revealed that the flexible PANI/P-PVA-1 electrode had good specific capacitance of 173.86 ​mF ​cm⁻² at 1 ​mA ​cm⁻², with the capacitance retention of 70.16% after 4000 charge-discharge cycles. Besides, it had excellent heat-induced shape memory effect. The fixed shape could completely recover to its original shape within 10 ​s at 80 ​°C, which is above the glass transition temperature (75.89 ​°C) of PANI/P-PVA-1. The comparatively tensile strength (2.86 ​MPa) and high elongation at break (315.72%) indicated its outstanding flexibility. Up to 200 times folding had no effect on the electrochemical properties. The free-standing polymer electrodes with excellent comprehensive performance provide potential applications in flexible energy-storage devices, electronic encapsulation and high stretchable electric devices etc.

对便携式和柔性储能设备日益增长的需求推动了柔性电极和电解质的发展。这项工作的目的是制造具有良好电容性能和形状记忆行为的柔性独立式聚苯胺/聚（乙烯醇）（PANI/PVA）复合电极。电极是通过苯胺在多孔 PVA (P-PVA) 薄膜中的化学氧化聚合制成的。通过扫描电子显微镜、循环伏安法、恒电流充放电、拉伸试验等研究了PANI/P-PVA-1电极的形貌、电化学和机械性能。结果表明柔性PANI/P-PVA-1电极具有良好的性能。的173.86 mF及其厘米比电容^-2以1mA厘米^-2,4000 次充放电循环后电容保持率为 70.16%。此外，它具有优异的热致形状记忆效应。固定形状可在 80°C 下在 10 s 内完全恢复到其原始形状，高于 PANI/P-P-PVA-1 的玻璃化转变温度（75.89°C）。相对拉伸强度 (2.86 MPa) 和高断裂伸长率 (315.72%) 表明其出色的柔韧性。高达 200 次折叠对电化学性能没有影响。具有优异综合性能的自支撑聚合物电极在柔性储能器件、电子封装和高伸缩性电子器件等方面具有潜在的应用前景。