Hierarchical construction of Co3S4 nanosheet coated by 2D multi-layer MoS2 as an electrode for high performance supercapacitor

Heterostructured Co-NTC@Co3S4 as an anode material for asymmetric pseudocapacitors

“…This value is better than most reported work with regard to Co-NTC@Co 3 S 4 and its composites (Table 1). 6,19,40–45 Besides, Fig. 5(c) shows that the specific capacitance of Co-NTC@Co 3 S 4 is higher than those of ZIF-67, ZIF-67-S and ZIF-67@Co-NTC under different current densities, which can be related to the larger specific surface area.…”

“…Simultaneously, Fig. 7(e) shows that the Co-NTC@Co 3 S 4 //AC device reaches an energy density of 66.0 W h kg −1 at a power density of 3857.1 W kg −1 , and it still achieves an energy density of 43.8 W h kg −1 at a power density of 9385.7 W kg −1 , which is better than the reported ASC devices, for instance, Co 3 S 4 /g-C 3 N 4 //AC (37.7 W h kg −1 at 850.2 W kg −1 ), 46 Co 3 S 4 /ZCS//AC (55.6 W h kg −1 , 690.9 W kg −1 ), 45 Co 3 S 4 @MoS 2 //RGO (53.96 W h kg −1 , 887.01 W kg −1 ) 41 and Co 3 S 4 @NiO//AC (0.78 kW kg −1 , 54.99 W h kg −1 ). 32 Besides, the ASC device maintains 110% of the original capacitance after 5000 cycles as shown in Fig.…”

The Hierarchical Structures of Co3S4 Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

“…In alkaline solutions, the reversible Faraday behavior can be interpreted by the following formulae. [ 42–44 ] …”

“…In alkaline solutions, the reversible Faraday behavior can be interpreted by the following formulae. [42][43][44] Co 3 S 4 þOH À ↔ Co 3 S 4 OH þ e À…”

MOF-derived hierarchical core–shell hollow Co3S4@NiCo2O4 nanosheet arrays for asymmetric supercapacitors

“…21 To tackle these challenges, the most typical strategy is to construct a core-shell nanoarray to avoid direct contact between the TMSs and electrolyte. 21,22 Moreover, the core-shell structure can make full use of the merit of each component. NiCo 2 O 4 , as a bimetallic oxide, has been widely used in the field of electric energy storage due to its high energy storage performance.…”