Conducting polymer hydrogels (CPHs) are appealing organic electrode materials, and their morphology controlled synthesis and the applications in new energy-storage devices are urgently needed to be developed. Herein, based on the self-assembly between polyaniline (PANI) and anionic surfactants, sodium dodecyl benzene sulfonate (SDBS) and sodium dodecyl sulfate (SDS), a new kind of conducting polymer hydrgoels (PANI-SDBS and PANI-SDS) were synthesized. Depending on the conjugated benzene ring in SDBS, the resultant PANI-SDBS exhibited well-aligned fibrous morphology and reinforced mechanical strength. For the first time, the CPHs were employed as cathode materials for Zn-ion battery. The results showed that the three-dimensionally (3D) continuous microstructures of hydrogels could facilitate doping/dedoping kinetics and rate performance of electrodes. Moreover, well-aligned fibrous morphology endowed PANI-SDBS with excellent cycling stability (81.7% of capacity retention after 1500 discharge/charge cycles at 0.5 A g^–1). This work presents a facile method to regulate the microstructures of CPHs and opens a window for their application in durable electrode materials for Zn-ion battery.

导电聚合物水凝胶（CPH）是有吸引力的有机电极材料，迫切需要开发它们的形态控制合成方法以及在新的储能装置中的应用。在此，基于聚苯胺（PANI）与阴离子表面活性剂之间的自组装，十二烷基苯磺酸钠（SDBS）和十二烷基硫酸钠（SDS），合成了一种新型的导电高分子水合物（PANI-SDBS和PAN​​I-SDS）。 。取决于SDBS中的共轭苯环，所得的PANI-SDBS显示出良好排列的纤维形态和增强的机械强度。CPH首次被用作Zn离子电池的阴极材料。结果表明，水凝胶的三维（3D）连续微观结构可以促进电极的掺杂/去掺杂动力学和速率性能。此外，良好排列的纤维形态赋予PANI-SDBS出色的循环稳定性（在0.5 A g的电压下经过1500次放电/充电循环后，容量保持力的81.7％）^–1）。这项工作提出了一种简便的方法来调节CPH的微观结构，并为将其应用于Zn离子电池的耐用电极材料打开了一个窗口。