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This paper reported an easy synthesis of MnCo2S4 (MCS) nanosheets by a one-pot solvothermal method for high performance supercapacitor electrode material applications. The obtained MCS nanosheets with an ultrathin thickness...

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Herein, we presents a study on the fabrication and characterization of supercapacitor electrode by 3D printing. A colloidal suspension containing carbon nanotubes (CNTs) and cobalt ferrite nanoparticles (CoFe2O4 NPs) was used as ink. The ink was successfully printed on aluminium substrate using a modified 3D printer followed by solvent evaporation to form a porous CNTs/CoFe2O4 aerogel film. The characterization results showed that the film has porous surface, high electrical conductivity and good electrochemical properties, indicating its promising application as supercapacitor electrode for energy conversion and storage.

Các tương ứng của tổ hợ phụ âm tắc – bên tiếng Việt Trung đại trong tiếng Môn thời Dvaravati

Carbon nanotubes (CNTs)-ferrites hybrid nanomaterials have attracted extensive research interest owing to their large specific surfae area, high electrical, thermal conductiviy and outstanding electrochemical properties, which are widely investigated for energy conversion and storage devices. Regular syntheses rely mainly on the in situ growth of ferrite nanoparticles (NPs) in the presence of the preformed CNTs. It is very challenging to control the composition and morphology of the individual components, and to scale-up the synthesis. In this work, ferrite NPs were prepared by  solvothermal method. Porous (3D) CNTs-ferrites hybrid aerogels were fabricated by using freeze gelation method. The results indicate that the obtained 3D CNTs-ferrites aerogels were very porous, highly electrical conductive and have good electrochemical properties.

In this paper, zinc oxide (ZnO) nanoparticles were prepared by solvothermal method. A mixture of ZnO nanoparticles and GO, surfactants, binders are dispersed in aqueous solvent. This suspension was then used as the ink for the modified 3d printer to coat on the graphite substrate to form electrodes. The GO/ZnO film has a specific capacitance of 119.9 F/g at a scan rate of 5 mV/s of CV test. The specific discharge capacitance was 153.9 F/g and retained 94.5% after 3000 cycles of galvanostatic charge-discharge (GCD) measurement with a current density of 15 mA/cm2.