The effect of temperature deposited on the performance of ZnO-CNT-graphite for supercapacitors

[摘要] Carbon nanotubes (CNTs), graphite are now widely studied as the electrodes of supercapacitor, owing to their high conductivity, large surface area, chemical stability, etc. A lot of research has been focused on Carbon/metal oxide nanocomposite electrode for Electrode supercapacitor because it will increase the total capacitance. In this research, ZnO nanoparticles were deposited onto substrate CNT:Graphite in different temperatures such as 300°, 350°, and 400°C. The characterization of the crystal size using X-Ray Diffraction (XRD) patterns showed ZnO material peak was detected a ZnO crystallite. The size of ZnO crystallite in 300°, 350°, and 400°C consecutively is 101.1; 103.4; and 116.7 nm. The test results are Electrochemical impedance spectrometry (EIS) high electrical conductivity values obtained on the composition of ZnO-CNT-graphite with a temperature of 350°C 4.6 (S/m); and (2) the highest value of capacitance in 300°C is 1.23 F/g.

[发布机构] Department of Physics, Faculty of Science and Mathematics, Diponegoro University, Indonesia^1;Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, Indonesia^2;Center of Physics Research, LIPI, Indonesia^3

[效力级别] 物理学

[关键词] Crystal size;Effect of temperature;Electrochemical impedance spectrometry;High conductivity;High electrical conductivity;Large surface area;Nanocomposite electrodes