Transition Metal Oxides have drawn significant attention due to their reversible chemical redox reaction and long-life stability. Inexorable agglomeration and shrinkage/expansion of transition metal oxides in the nanosize regime have a noticeable effect on their electrochemical properties. Here in this work, mesoporous nanowires (NWs) with a typical composition of iron-nickel-cobalt ternary oxide (FNCO) are synthesized using a simple, facile and cost-effective hydrothermal process followed by furnace annealing. These NWs are then extensively investigated as an electrode material for supercapacitor application. To compare the electrochemical properties, nanowires of nickel-cobalt oxide (NCO), iron-cobalt oxide (FCO) and cobalt oxide (CO) were also produced by following the same protocol. The FNCO NWs are found to overcome the shortcomings in the electrochemical energy storage devices by exhibiting higher values of specific capacitance (2197 Fg^-1) and energy density (109 Whkg⁻¹) at 1 Ag^-1 current rate. Moreover, the FNCO NWs also showed a cyclic charge/discharge stability of 96% even up to 20,000 cycles. Furthermore, a FNCO//graphene asymmetric device, fabricated with FNCO NWs and graphene as positive and negative electrodes, respectively, which exhibit high energy density (47 Whkg⁻¹), power density (375 Wkg^-1) and excellent capacitance retention (86%) after 15,000 cycles.

过渡金属氧化物由于其可逆的化学氧化还原反应和长寿命稳定性而引起了极大的关注。纳米级过渡金属氧化物不可避免的团聚和收缩/膨胀对其电化学性能有显着影响。在这项工作中，具有典型组成的铁镍钴三元氧化物 (FNCO) 的介孔纳米线 (NW) 是使用简单、简便且具有成本效益的水热工艺合成的，然后进行炉退火。然后，这些纳米线作为超级电容器应用的电极材料被广泛研究。为了比较电化学性能，还按照相同的协议生产了镍钴氧化物 (NCO)、铁钴氧化物 (FCO) 和钴氧化物 (CO) 的纳米线。^-1 ) 和能量密度 (109 Whkg ^-1 ) 在 1 Ag ^-1电流速率下。此外，FNCO NW 还表现出 96% 的循环充放电稳定性，甚至高达 20,000 次循环。此外，FNCO//石墨烯不对称器件，分别以FNCO NWs和石墨烯作为正极和负极制成，具有高能量密度（47 Whkg ^-1）、功率密度（375 Wkg ^-1）和优异的电容保持率（86 %) 15,000 次循环后。