Nanostructured current collectors have larger specific surface area and short ion/electron transport path, which are highly desirable for supercapacitors applications. Herein, Co_0.85Se@NiNPs (Co_0.85Se@NiNP) hybrid electrodes are proposed and fabricated, in which NiNP is served as nanostructured current collectors. NiNP has a vertical pore structure and a large specific surface area, which could effectively promote the ion/electron transport efficiency and reduce internal electrical resistance. Compared with Ni foam and Ni foil as current collectors, NiNP enables Co_0.85Se@NiNP electrodes show significantly improved specific capacity, rate performance and cycle stability. Finally, an asymmetric supercapacitor device was assembled with Co_0.85Se@NiNP hybrid electrode as the binder-free positive electrode and activated carbon (AC) coated on nickel foam as negative electrode. The Co_0.85Se@NiNP//AC asymmetric supercapacitors can work in a wide potential window of 0 – 1.6 V with an ultrahigh specific capacity of 182.3 F g⁻¹ at 1 A g⁻¹. Most importantly, Co_0.85Se@NiNP//AC has a high energy density of 64.81 Wh kg⁻¹ at 800 W kg⁻¹ and an outstanding cycle stability of up to 12000 cycles, indicating that Co_0.85Se@NiNP electrode has great application potential in supercapacitors.

纳米结构的集电器具有更大的比表面积和短的离子/电子传输路径，这对于超级电容器应用非常理想。在此，提出并制造了Co _0.85 Se@NiNPs (Co _0.85 Se@NiNP) 混合电极，其中 NiNP 作为纳米结构的集电器。NiNP具有垂直孔结构和较大的比表面积，可有效提高离子/电子传输效率并降低内电阻。与作为集流体的泡沫镍和镍箔相比，NiNP 使 Co _0.85 Se@NiNP 电极显示出显着提高的比容量、倍率性能和循环稳定性。最后，用 Co _0.85组装了一个不对称的超级电容器装置Se@NiNP 混合电极作为无粘合剂正极，涂覆在镍泡沫上的活性炭（AC）作为负极。Co _0.85 Se@NiNP//AC 不对称超级电容器可以在 0 – 1.6 V 的宽电位窗口中工作，在 1 A g ^{-1 时}具有 182.3 F g ^-1的超高比容量。最重要的是，Co _0.85 Se@NiNP//AC在 800 W kg ^{-1 时}具有 64.81 Wh kg ^-1的高能量密度和高达 12000 次循环的出色循环稳定性，表明 Co _0.85 Se@NiNP 电极具有很好的应用前景超级电容器的潜力。