A mixture of polydopamine (PDA) and polyethyleneimine (PEI) are used as the adhesive, wetting, and reducing agent simultaneously to fabricate a conductive silver membrane. The conformal coating of PDA/PEI on individual polypropylene fibers of polypropylene micromembrane (PPMM) renders the latter to be hydrophilic for subsequent electroless silver deposition. The resulting conductive silver membrane demonstrates impressive electric conductivity in both X and Z directions. The thickness of conformal silver overcoat is 250 nm and the effective loading is 2.4 mg/cm². The mechanical strength of conducive silver membrane is similar to that of pristine PPMM. Both cyclic voltammetry and impedance spectroscopy on the conductive silver membrane reveal a large electrochemical active surface area. To validate its usefulness as a robust soft electrode, the conductive silver membrane is evaluated for the detection of chlorine in aqueous solution in which a low detection limit of 0.07 ppm and a wide detection range of 0.1–20 ppm are validated.

聚多巴胺 (PDA) 和聚乙烯亚胺 (PEI) 的混合物同时用作粘合剂、润湿剂和还原剂来制造导电银膜。聚丙烯微膜 (PPMM) 的单个聚丙烯纤维上的 PDA/PEI 保形涂层使后者具有亲水性，可用于随后的化学银沉积。由此产生的导电银膜在 X 和 Z 方向都表现出令人印象深刻的导电性。保形银涂层厚度为250 nm，有效负载量为2.4 mg/cm ². 导电银膜的机械强度与原始 PPMM 相似。导电银膜上的循环伏安法和阻抗谱均显示出较大的电化学活性表面积。为了验证其作为坚固软电极的实用性，导电银膜用于检测水溶液中的氯，其中验证了 0.07 ppm 的低检测限和 0.1-20 ppm 的宽检测范围。