Yarn-shaped supercapacitors (YSCs) are becoming promising energy-supply units with decent mechanical flexibility to be integrated into e-textiles in various shapes and locations. However, a robust YSC configuration that can provide long-term and reliable power output, especially after rigorous weaving and knitting processes, as well as all kinds of end uses, is yet to be established. Most YSCs today still suffer from short-circuiting upon length, primarily due to the structure failure of gel electrolyte that also works as the separator. Herein, we report the incorporation of separator threads in a twisted YSC, to withstand repetitive mechanical deformations. Separator threads are wrapped outside of yarn electrodes as a scaffold to accommodate gel electrolyte, while chemistry and wrapping density of these threads are investigated. With processing parameters optimized, we present an YSC configuration that can bear mechanical deformations along almost all directions, leading to reliable power units in woven or knit fabrics.

纱线形超级电容器 (YSC) 正在成为有前途的能源供应单元，具有良好的机械灵活性，可以集成到各种形状和位置的电子纺织品中。然而，一个强大的 YSC 配置可以提供长期和可靠的动力输出，特别是在严格的编织和针织工艺以及各种最终用途之后，还有待建立。如今，大多数 YSC 仍然存在长度短路问题，这主要是由于凝胶电解质的结构失效，而凝胶电解质也可用作隔膜。在这里，我们报告了在扭曲的 YSC 中加入分隔线，以承受重复的机械变形。分隔线作为支架包裹在纱线电极的外部以容纳凝胶电解质，同时研究了这些线的化学和缠绕密度。