Electrochemical deposition of ZnCo₂O₄/NiCo₂S₄ nanosheet arrays for high-performance supercapacitors

Abstract

The demand of power density has promoted the application of supercapacitors, and one hot study task for supercapacitors is high-energy-density electrode materials such as transition metal oxides or sulfides. Here,...

Engineering cationic vacancies on sphere-like zinc cobaltite microstructuresviaself-assembly of silkworm-like interconnected nanoparticles for battery-type supercapacitors

“…24 In addition, numerous studies have indicated that altering the micro/nanostructure and morphology of the ZCO electrode materials can significantly enhance their electrochemical performance. 8,17 Consequently, researchers have developed various synthesis methods, including hydro/solvothermal, 8 microwave-assisted, 17 sol–gel, 25 co-precipitation, 18,24 and electrodeposition 26 to produce a wide range of microstructures and morphological modifications, such as nanowires, 27 nanoflakes, 28 nanorods, 29 nanoparticles, 30 microspheres 24 and microflowers. However, there is still considerable scope for improving the morphological structure of ZCO material.…”

Recent Design and Synthesis Strategies for High-Performance Supercapacitors Utilizing ZnCo2O4-Based Electrode Materials

“…The ZCO/NCS composite electrodes were obtained through electrochemical deposition using a mixed solution of MOF-derived ZnCo 2 O 4 and precursors of Ni, Co, and S. A medium consisting of DMF and methanol was employed for the solvothermal synthesis of MOF-derived ZnCo 2 O 4 at 150 • C for 12 h. Subsequently, the synthesized material was treated with tannic acid and annealed at 600 • C for 2 h. The samples prepared under the electrodeposition condition (0.9 V, 10 min) exhibited a specific capacitance of 2385 F g −1 (at 1 A g −1 ) and a power density of 8.0 kW kg −1 at 10 A g −1 . Furthermore, a capacitance retention of 91.5% was observed after 5000 cycles [76].…”

CuCoNi–S anchored CoMoO4/MoO3 forming core–shell structure for high-performance asymmetric supercapacitors

“…11,12 Generally, the exploring of new electrode materials was considered the key for boosting the energy densities and increasing the voltage window of asymmetric supercapacitors (ASC). 13–15…”