Simple controllable foam structure NiCo2S4 for high-performance hybrid supercapacitors

Engineering hierarchical manganese molybdenum sulfide nanosheet integrated cathodes for high-energy density hybrid supercapacitors

“…Moreover, a high energy density of 51.5 W h kg −1 could be maintained at 5437.3 W kg −1 . The energy density reported by our HSC is higher than other similar SCs such as FSNCS//AC (28.8 W h kg −1 at 375 W kg −1 ), 70 NCS-G 3 //G (33.8 W h kg −1 at 799.8 W kg −1 ), 71 ZCS δ -9 h//NOPC (28 W h kg −1 at 800 W kg −1 ), 72 Ni-Co-S//CS (65 W h kg −1 at 850 W kg −1 ), 73 NiCoS/d-Ti 3 C 2 //AC (22.6 W h kg −1 at 400 W kg −1 ), 74 Zn-Ni-S//PMCN (52.4 W h kg −1 at 551.7 W kg −1 ), 75 MnCo 2 S 4 //Graphene (32.9 W h kg −1 at 295.2 W kg −1 ), 76 Mn 0.33 Sn 0.67 S 2 //AC(15.68 W h kg −1 at 150.1 W kg −1 ), 77 and MCS-P2//rGO (48.7 W h kg −1 at 386 W kg −1 ), 78 and is also higher than others listed in Table S6 (ESI†). Long-term cycling stability is also a crucial factor for the practical application of HSC, which is performed for consecutive 10 000 GCD cycles at a high current density of 50 mA cm −2 .…”

An Integrated Cathode Engineered by Hierarchical Honeycomb‐Like Copper‐Molybdenum Sulfide Nanosheets for Hybrid Supercapacitor with Improved Energy Storage Capability

“…Amazingly, the HSC can still hold a high energy density of 50.56 Wh kg À 1 at 2136.4 W kg À 1 . It should be noted that the highest energy density of our-assembled HSC is higher than those of the similar devices reported recently, such as NiCo 2 S 4 /BPC//BPC (38.5 Wh kg À 1 at 853.1 W kg À 1 ), [72] NCS-G 3 //G (33.8 Wh kg À 1 at 799.8 W kg À 1 ), [73] FSNCS//AC (28.8 Wh kg À 1 at 375 W kg À 1 ), [74] CuCo 2 S 4 /NF 8 //AC (51.8 Wh kg À 1 at 700 W kg À 1 ), [75] FeCo 2 S 4 @Ni@Gr//AC (65.8 Wh kg À 1 at 849 W kg À 1 ), [76] NiCoS/d-Ti 3 C 2 //AC ( 22.6 Wh kg À 1 at 400 W kg À 1 ), [77] ZnÀ NiÀ S//PMCN (52.4 Wh kg À 1 at 551.7 W kg À 1 ), [78] and is also superior to others listed in Table S4. The cyclic stability measurement of the HSC is conducted at 50 mA cm À 2 for 10000 GCD cycles, and the result is provided in Figure 5e.…”

Recent advances in Ni-materials/carbon nanocomposites for supercapacitor electrodes

“…The various supercapacitors based on the Ni materials//active carbon electrodes have been employed in electrochemical applications, and the novel results of the reported papers are tabulated in Table 4. 182–219 The utilization of active carbon in supercapacitors highlights its valuable role in improving energy storage capabilities and supporting advancements in various fields where efficient power delivery and rapid energy transfer are essential. Ni(OH) 2 /ZIF-67-derived CoS core/carbon cloth (Ni(OH) 2 /CoS/CC) was used in the supercapacitor of Ni(OH) 2 /CoS/CC (cathode)//AC (anode) that revealed a remarkable energy density as well as its excellent electro-catalytic activity towards methanol oxidation.…”

“…The FSNCS//AC displays an energy density of 28.8 W h kg −1 with a good cyclic life of 88.9% after 5000 cycles. 216 The ultrathin and porous NiCo 2 O 4 nanosheet-based electrodes were synthesized and exhibited a high area capacity of 2690 F g −1 . The corresponding supercapacitor if NiCo 2 O 4 (+)//(−)AC delivered a superior energy density of 52.6 W h kg −1 with a capacitance retention of 80.9% after 3000 cycles.…”