Herein, we have successfully fabricated NiVS/NiCuP nanostructures on Cu wire as a fiber electrode for high performance FSMSCs applications. The 3D NiCuP dendritic film was firstly deposited on Cu wire through the electrodeposition method, which not only act as a scaffold for deposition of the electroactive materials (NiV-LDH and NiV-S), but also served as a micro-porous current collector, supplied extra capacitances. Then, NiV-LDH nanosheets grown on 3D NiCuP film were obtained using a hydrothermal method. The sulfidation of NiV-LDH is carried out through an ion-exchange reaction of OH^– with S^2– to obtain NiVS, which maintains an ultrathin and porous structure, improves the electrical conductivity and reduces the diffusion resistance of the electrode. The as-prepared c-NiVS/NiCuP/CW electrode exhibits outstanding specific capacitance (13.4 F cm^–2, 1.7 F cm^–1, 1342.28 F cm^–3 at a current density of 4 mA cm^–2) compared with the pristine NiV-LDH and NiVS directly growing on Cu wire in the absence of 3D NiCuP film. Finally, a solid state asymmetric fiber-shaped micro-supercapacitor (FSAMSCs) is fabricated using c-NiVS/NiCuP/CW as the positive electrode and rGO/CF as the negative electrode. The assembled FSMSC device has a maximum operational voltage of 1.8 V and presented a high energy density of 295 µWh cm^–2 (22.7 mWh cm^–3 and 46.35 µWh cm^–1) at a power density of 4.3 mW cm^–2 (330.7 mW cm^–3 and 674.7 µW cm^–1) with an excellent cycling stability (91.5% of its initial specific capacitance after 3000 cycles) and good mechanical stability. These results suggest that the fabricated device has excellent potential as a power source for next generation flexible and portable fiber-based energy storage micro-devices.

在这里，我们已经成功地在铜丝上制造了NiVS / NiCuP纳米结构，作为用于高性能FSMSC应用的纤维电极。3D NiCuP树突状薄膜首先通过电沉积方法沉积在铜线上，它不仅充当沉积电活性材料（NiV-LDH和NiV-S）的支架，而且还充当微孔集电器，提供额外的电容。然后，使用水热法获得了在3D NiCuP膜上生长的NiV-LDH纳米片。NiV-LDH的硫化是通过OH ^–与S ^2–的离子交换反应进行的。为了获得保持超薄和多孔结构的NiVS，提高了导电性并降低了电极的扩散电阻。所制备的C-NIVS / NiCuP / CW电极表现出杰出的比电容（13.4˚F厘米^-2，1.7˚F厘米^-1，1342.28˚F厘米^-3在4毫安cm 2的电流密度^-2与原始的NiV相比）在没有3D NiCuP膜的情况下，-LDH和NiVS直接在铜线上生长。最后，以c-NiVS / NiCuP / CW为正极，rGO / CF为负极，制备了固态不对称纤维状微型超级电容器（FSAMSC）。组装后的FSMSC设备具有1.8 V的最大工作电压，并具有295 µWh cm ^–2的高能量密度（22.7 mWh cm ^–3和46.35 µWh cm ^–1）的功率密度为4.3 mW cm ^–2（330.7 mW cm ^–3和674.7 µW cm ^–1），具有出色的循环稳定性（经过测试后其初始比电容为91.5％） 3000个循环）和良好的机械稳定性。这些结果表明，所制造的装置作为下一代柔性和便携式基于光纤的能量存储微装置的电源具有极好的潜力。