A novel cotton/Ni/Co-Ni layered double hydroxide (CT/Ni/Co-Ni LDH) hybrid yarn electrode material is prepared by constructing a three-dimensional (3D) metallic Ni conductive network on the cotton fiber surface for rapid electron transportation and subsequently in situ growing Co-Ni LDH nanosheet array layers with high electroactive surface area for faradic reactions. The 3D porous electrode structure facilitates the effective electrolyte ion diffusion. The obtained yarn electrode material shows a high areal capacitance of 1.26 F/cm² (121571.1 C/cm²) at a scan rate of 5 mV/s, as well as a stable electrochemical performance under various mechanical deformations. An all-solid-state yarn supercapacitor device is further assembled based on the obtained yarn electrode materials, which exhibits a high energy density of 9.3 μWh/cm² at a power density of 43.99 μW/cm².

通过在棉纤维表面上构建三维（3D）金属Ni导电网络以快速进行电子传输，制备了一种新型棉/ Ni / Co-Ni层状双氢氧化物（CT / Ni / Co-Ni LDH）混合纱线电极材料。然后原位生长具有高电活性表面积的Co-Ni LDH纳米片阵列层用于法拉第反应。3D多孔电极结构有助于有效的电解质离子扩散。所获得的纱线电极材料显示出1.26 F / cm ²（121571.1 C / cm ²）的扫描速率为5 mV / s，并且在各种机械变形下均具有稳定的电化学性能。全固态纱超级电容器装置是根据所获得的纱线的电极材料，其表现出的9.3μWh/ cm的高能量密度的进一步组装²以43.99μW/ cm的功率密度²。