Fabric‐based supercapacitors have received considerable interest as energy storage devices for wearable systems. This work demonstrates the use of metal coated fabrics as the active material and current collector with nontoxic polyvinyl alcohol (PVA)‐KCl gel electrolyte for wearable supercapacitors (SCs). To evaluate the influence of the metal coating, the electrochemical and capacitive studies are carried out and results are compared with a newly developed metal free graphite printed textile (cellulose‐polyester) (CP‐Gr) based SC. It is evident that the homemade graphite paste electrode printed on the top of Armor FR (Ni/Cu coated polyester fabric) (AFR‐Gr) and Nora Dell (Ni/Cu/Ag coated polyamide) (ND‐Gr) based SCs with PVA‐KCl electrolyte exhibits the specific capacitance of 99.06 and 46.88 mF cm⁻², respectively, at sweep rate of 5 mV s⁻¹. These values are 24 and 52 times greater than that of CP‐Gr based SC. The AFR‐Gr and ND‐Gr based SCs have an excellent energy density of 8.81 and 4.17 µWh cm⁻², respectively, at 5 mV s⁻¹. The fabricated ND‐Gr based SC gives a stable response for more than 5000 charging/discharging cycles. Finally, the nontoxic nature of the PVA‐KCl gel electrolyte is evaluated and confirmed through in vitro cytocompatibility assessment with adult human dermal fibroblasts cells for wearable applications.

中文翻译：

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用于可穿戴超级电容器的带有石墨电极和生物相容性凝胶电解质的金属涂层导电织物

基于织物的超级电容器作为可穿戴系统的储能设备已经引起了广泛的关注。这项工作演示了将金属涂层织物用作无毒聚乙烯醇（PVA）-KCl凝胶电解质的活性材料和集电器，用于可穿戴式超级电容器（SC）。为了评估金属涂层的影响，进行了电化学和电容研究，并将结果与​​新开发的无金属石墨印花织物（纤维素-聚酯）（CP-Gr）SC进行了比较。显然，自制的石墨糊状电极印在带有PVA的Armor FR（Ni / Cu涂层聚酯织物）（AFR-Gr）和Nora Dell（Ni / Cu / Ag涂层聚酰胺）（ND‐Gr）的顶部上，带有PVA ‐KCl电解质的比电容为99.06和46.88 mF cm ^-2分别以5 mV s ^-1的扫描速率。这些值是基于CP‐Gr的SC的24和52倍。在5 mV s ^-1时，基于AFR-Gr和ND-Gr的SC的能量密度分别为8.81和4.17 µWh cm ^-2。基于ND-Gr的预制SC可在超过5000个充电/放电循环中提供稳定的响应。最后，通过对成年人类真皮成纤维细胞进行可穿戴应用的体外细胞相容性评估，评估并确认了PVA-KCl凝胶电解质的无毒性质。