Facile synthesis of 3D CuS micro-flowers grown on porous activated carbon derived from pomelo peel as electrode for high-performance supercapacitors

Room-temperature synthesized porous Cu(OH)2/Cu7S4 hybrid nanowires as a high-performance electrode material for asymmetric supercapacitors

“…The obtained energy and power density for this ACS device are higher than those of ASC devices based on other copper-based materials reported in literature as shown in Fig. 9a, which include CuS1.96//AC (10.5 Wh kg -1 at 750 W kg -1 ) 48 , CuCo2S4//AC (15 Wh kg -1 at 400 W kg -1 ) 71 , CuS//AC (16.0 Wh kg -1 at 185.4 W kg -1 ) 24 , Cu(OH)2//AC (18.3 Wh kg -1 at 326 W kg -1 ) 31 , CuS//AC (26.0 Wh kg -1 at 2700 W kg -1 ) 72 . Even compared with those made of copper-based hybrid materials such as Ni3S2-Cu1.8S//AC (30.9 Wh kg -1 at 798 W kg -1 ) 63 , CuS@MnS//AC (20.17 Wh kg -1 at 224.67 W kg -1 ) 73 , CuCo2S4//AC(23.2 Wh kg -1 at 402.7 W kg -1 ) 69 , the Cu(OH)2/Cu7S4//AC ASC prepared in this study also shows higher energy and power density.…”

Flexible Ti3C2Tx/Carbon Nanotubes/CuS Film Electrodes Based on a Dual-Structural Design for High-Performance All-Solid-State Supercapacitors

“…It matches the standard card JCPDS no. 06-0464, and no addition peaks for other phases are obtained, indicating the high purity and crystallinity of the hexagonal CuS . Moreover, the intensity of the peak at 2θ = 48.1° of the (110) plane is stronger than that of the standard peak, suggesting the preferential growth direction of the CuS crystal during synthesis (Figures b and S4b).…”

“…06-0464, and no addition peaks for other phases are obtained, indicating the high purity and crystallinity of the hexagonal CuS. 51 Moreover, the intensity of the peak at 2θ = 48.1°of the (110) plane is stronger than that of the standard peak, suggesting the preferential growth direction of the CuS crystal during synthesis (Figures 2b and S4b). 51,56 Figure S5 shows the TEM image of the CuS-9h material, indicating the CuS sheets with a thickness of ∼75 nm (Figure 2a) in the length of a few micrometers are formed after 9 h of growth time.…”

“…More recently, metallic CuS materials with high conductivity have received extensive attention in SCs and Li-ion batteries as electrode materials in view of their high theoretical capacity (561 mAh/g), excellent chemical stability, and fast faradic electrochemical features. − To further improve the electrochemical performance and extend the application of CuS materials in flexible solid-state SCs, numerous endeavors have been devoted to combine either CuS with flexible stainless steel , and three-dimensional graphene or CuS@poly­(3,4-ethylenedioxythiophene) (PEDOT) with carbon cloth to form composite materials . In spite of all of these efforts, optimization, and engineering, the surface performance of CuS via hybridizing CuS with other electroactive materials, especially with 2D materials, to promote the surface faradic reaction, to facilitate the electrochemical kinetics, and to impede the degradation of CuS during the charging and discharging process still needs to be explored .…”

Polygonal CuS Nanoprisms Fabricated by Grinding Reaction for Advanced Quasi-Solid-State Asymmetry Supercapacitors

“…The liquid-phase synthesis (LPS) method, including hydrothermal, solvothermal, electrospinning, and so forth, is the dominant strategy to prepare TMSs. − Affected by temperature, pressure, and the added surfactants, the LPS method is restricted in the economic and environmentally friendly fields . In contrast, the solid-phase synthesis method, such as the grinding method, ultimately gets rid of the constraints of the solvent system and has a broader range of energy storage applications. − Specifically, the grinding method at ambient temperature has been repeatedly utilized to fabricate materials with high-efficiency electrochemical energy storage performance on account of its simplicity, energy conservation, and freedom from H 2 S. − Thus, solid-state grinding will be a promising alternative to obtain TMSs with excellent performances.…”