Preparation and characterization of GO/ZnO electrode for supercapacitors

Hoang Tran Dung; Doan Thanh Tung; Le Thi Thanh Tam; Trinh Quang Dung; Nguyen Thi Yen; Ngo Ba Thanh; Ngo Thanh Dung; Phan Ngoc Hong; Le Trong Lu

doi:10.15625/2525-2518/57/5/13313

Author affiliations

Authors

Hoang Tran Dung Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Doan Thanh Tung Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Le Thi Thanh Tam Graduate University of Scienceand Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Trinh Quang Dung Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Nguyen Thi Yen Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Ngo Ba Thanh Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Ngo Thanh Dung Graduate University of Scienceand Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Phan Ngoc Hong Graduate University of Scienceand Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Le Trong Lu Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/57/5/13313

Keywords:

electrode, nanomaterials, supercapacitors, 3d printer

Abstract

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.

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