@article{NST, author = {Ngo Hoanh and Nguyen Tuong and Nguyen Hung and Le Hieu and Le Thanh and Pham Kien and Le Hoang and Phung Thinh}, title = { Synthesis and Electrochemical Characterization of rGO/CoFe2O4 Nanocomposite Material}, journal = {VNU Journal of Science: Natural Sciences and Technology}, volume = {39}, number = {3}, year = {2023}, keywords = {}, abstract = {The rGO material was modified with CoFe2O4 nanoparticles by a combination of aqueous precipitation at various pH conditions and reduction at high temperatures. The obtained rGO/CoFe2O4 composite has a porous structure with a substantial surface area and pore volume. At pH 10, the synthesized composite has a specific surface area of 270 m2/g, and the CoFe2O4 particle size is approximately 50 nm. As an electrode material in a supercapacitor system, the material has a specific capacitance of 383 F/g at a current density of 0.1 A/g, and after 1000 cycles, its specific capacitance remains at 91.5%. The obtained results demonstrate that the modification of rGO with CoFe2O4 nanoparticles is an advanced and effective approach to enhancing the electrochemical properties of materials.}, issn = {2588-1140}, doi = {10.25073/2588-1140/vnunst.5558}, url = {https://js.vnu.edu.vn/NST/article/view/5558} }