We synthesized a flexible lithium-ion battery (LIB) anode with a flower-like CuCo₂O₄ nanostructure grown on the surface of conductively-treated filter paper. The filter paper, made of cotton fibers, has good flexibility, but its poor conductivity limits its application in flexible electrodes. An Ni coating by magnetron sputtering can significantly improve its conductivity, which enables it to be used as a substrate for flexible electrodes. The flower-like CuCo₂O₄ nanostructure is assembled from CuCo₂O₄ nanowires with a diameter of 50 nm, while the CuCo₂O₄ nanowires are assembled from CuCo₂O₄ nanoparticles with a size of 10–20 nm. The gap between the stacked CuCo₂O₄ nanoparticles causes the porous structure of the CuCo₂O₄ nanowires. The high theoretical capacity of CuCo₂O₄, the porous structure of the CuCo₂O₄ nanowires, and the tiny CuCo₂O₄ nanoparticles lead to the excellent electrochemical performance of the CuCo₂O₄ flower-like nanostructure. It maintains capacity very well during cycling and delivers a high capacity of 989 mAh g⁻¹ at a current density of 100 mA g⁻¹. As a flexible LIB anode, the composite with the flower-like CuCo₂O₄ nanostructure grown on the surface of conductively-treated filter paper delivers a stable capacity of 544 mAh g⁻¹ at a current density of 100 mA g⁻¹ and a capacity of 304 mAh g⁻¹ at a high current density of 2000 mA g⁻¹. The conductively-treated filter paper substrate can significantly improve the battery property of the hydrothermally-fabricated CuCo₂O₄.

我们合成了一种柔性锂离子电池（LIB）阳极，该阳极具有在导电处理过的滤纸表面上生长的花状CuCo ₂ O ₄纳米结构。由棉纤维制成的滤纸具有良好的柔韧性，但导电性差限制了其在柔韧性电极中的应用。通过磁控溅射的镍涂层可以显着提高其导电性，使其可以用作柔性电极的基材。花状CUCO ₂ ö ₄纳米结构从组装CUCO _2个ö ₄纳米线的直径为50纳米，而CUCO ₂ ö ₄纳米线从CUCO组装₂ ö ₄尺寸为10–20 nm的纳米粒子。堆叠的CuCo ₂ O ₄纳米颗粒之间的间隙导致CuCo ₂ O ₄纳米线的多孔结构。CUCO的高理论容量₂ Ó ₄中，CUCO的多孔结构_2个ö ₄纳米线，和微小CUCO _2个ö ₄纳米颗粒导致CUCO的优良的电化学性能₂ ö ₄花状纳米结构。它在循环期间保持很好的容量，并在100 mA g ^-1的电流密度下提供989 mAh g ^-1的高容量。作为柔性LIB阳极，复合与花状CUCO ₂ ö ₄生长经导电处理的滤纸的表面上的纳米结构提供的544毫安g的稳定容量^-1在100mA g的电流密度^-1和的304毫安克容量^-1处的2000毫安g的高电流密度^-1。经导电处理的滤纸基材可显着改善水热加工的CuCo ₂ O ₄的电池性能。