Akademik Veri Yönetim Sistemi
Journal of Energy Storage, cilt.113, 2025 (SCI-Expanded)
Nickel cobalt sulfides have been increasingly attracted attention due to their high theoretical redox activity, leading to them promising options for advanced electrode materials in supercapacitor applications. Unfortunately, the limited lifespan and specific energy of these supercapacitors remain challenging. Thus, in the present study, a one-pot electrodeposition strategy is reported for the synthesis of nickel cobalt sulfide (NCS) and nickel cobalt sulfide-reduced graphene oxide (NCS(2:1)-rGO) hybrids on Ni foam (NF) to achieve high supercapacitive performance. Newly designed NCS(2:1)-rGO hybrid electrodes have enhanced electrochemical performance by enhancing conductivity and accelerating ion diffusion, attributed to the rGO. The specific capacitance of NCS(2:1)-rGO (2495.4 F g−1 at 1 A g−1) is greater than that of NCS(2:1) (2058.2 F g−1 at 1 A g−1) which demonstrates the synergistic effect of rGO in the hybrid structure. and the obtained favorable cyclability is found as 96.5 % of the initial capacity after 5000 cycles. Furthermore, the constructed NCS(2:1)-rGO//rGO exhibits a high specific energy (44.6 Wh kg−1 at 400 W kg−1) and outstanding rate capability (24.6 W h kg−1at 8000 W kg−1). These encouraging results suggest that this hybrid structure synthesized with the novel strategy offers great potential as an electrode active material for high-performance commercial supercapacitors.