3 research outputs found
CHARACTERISTICS OF SUPERCAPACITORS ELECTRODES BASED ON TITANIA AND CARBON NANOTUBES
TiO2-NT and CNT based electrodes have been fabricated by anodizing and pyrolysis and characterized by scanning electron microscope. Electrochemical performances such as spe-cific capacitance, energy and power have been calculated in frame of the galvanostatic charge-discharge curves analysis.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ Π² ΡΠ°ΠΌΠΊΠ°Ρ
ΠΈΠ½ΠΈΡΠΈΠ°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π½Π°ΡΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ° FEUZ-2020-0059 ΠΠΈΠ½ΠΎΠ±ΡΠ½Π°ΡΠΊΠΈ Π Π€
Synthesis of modified and composite electrodes of supercapacitors based on nanotubular arrays of anodic titanium dioxide
ΠΠ±ΡΠ΅ΠΊΡΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠ²Π»ΡΡΡΡΡ ΡΠ»Π΅ΠΊΡΡΠΎΠ΄Ρ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π½Π°Π½ΠΎΡΡΠ±ΡΠ»ΡΡΠ½ΠΎΠ³ΠΎ Π΄ΠΈΠΎΠΊΡΠΈΠ΄Π° ΡΠΈΡΠ°Π½Π°, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌΠΈ ΡΠΏΠΎΡΠΎΠ±Π°ΠΌΠΈ (ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠ°, ΡΠΎΠ·Π΄Π°Π½ΠΈΠ΅ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΎΠ² Ρ ΡΠ³Π»Π΅ΡΠΎΠ΄Π½ΡΠΌΠΈ Π½Π°Π½ΠΎΡΡΡΠ±ΠΊΠ°ΠΌΠΈ ΠΈ ΡΠ°ΡΡΠΈΡΠ°ΠΌΠΈ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π½ΠΈΠΊΠ΅Π»Ρ). Π‘ΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΠΎΠ±ΡΠ°Π·ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π»ΠΈΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ°ΡΡΡΠΎΠ²ΠΎΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΠΈ ΠΈ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ Π°Π½Π°Π»ΠΈΠ·Π° (Π³Π°Π»ΡΠ²Π°Π½ΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΠΉ Π·Π°ΡΡΠ΄-ΡΠ°Π·ΡΡΠ΄, ΡΠΈΠΊΠ»ΠΈΡΠ΅ΡΠΊΠ°Ρ Π²ΠΎΠ»ΡΡΠ°ΠΌΠΏΠ΅ΡΠΎΠΌΠ΅ΡΡΠΈΡ, ΠΈΠΌΠΏΠ΅Π΄Π°Π½ΡΠ½Π°Ρ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΡ). Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ ΡΠ»Π΅ΠΊΡΡΠΎΠ΄Ρ: 1) Π’/TiO2-ΠΠ’; 2) Π£ΠΠ’/TiO2-ΠΠ’; 3) Ni/TiO2-ΠΠ’ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»ΡΡΡΠΈΠ΅ ΡΠΎΠ±ΠΎΠΉ: 1) ΠΌΠ°ΡΡΠΈΠ²Ρ TiO2-ΠΠ’ ΡΠΎΠ»ΡΠΈΠ½ΠΎΠΉ 3,5 ΠΌΠΊΠΌ, Ρ Π²Π½ΡΡΡΠ΅Π½Π½ΠΈΠΌ Π΄ΠΈΠ°ΠΌΠ΅ΡΡΠΎΠΌ 70-80 Π½ΠΌ ΠΈ ΡΠΎΠ»ΡΠΈΠ½ΠΎΠΉ ΡΡΠ΅Π½ΠΎΠΊ 30-40 Π½ΠΌ; 2) ΠΌΠ°ΡΡΠΈΠ²Ρ TiO2-ΠΠ’ Ρ ΡΠ³Π»Π΅ΡΠΎΠ΄Π½ΡΠΌΠΈ Π½Π°Π½ΠΎΡΡΡΠ±ΠΊΠ°ΠΌΠΈ Π΄ΠΈΠ°ΠΌΠ΅ΡΡΠΎΠΌ 10-30 Π½ΠΌ ΠΈ Π΄Π»ΠΈΠ½ΠΎΠΉ ΠΎΡ Π΄Π΅ΡΡΡΠΊΠΎΠ² Π½ΠΌ Π΄ΠΎ Π΄Π΅ΡΡΡΠΊΠΎΠ² ΠΌΠΊΠΌ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΎΠΊΡΠΈΠ΄Π½ΠΎΠ³ΠΎ ΡΠ»ΠΎΡ; 3) ΠΌΠ°ΡΡΠΈΠ²Ρ TiO2-ΠΠ’, Π΄Π΅ΠΊΠΎΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΡΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΠ°ΠΌΠΈ Ni Π΄ΠΈΠ°ΠΌΠ΅ΡΡΠΎΠΌ 70-100 Π½ΠΌ Ρ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π»ΠΎΠΊΠ°Π»ΡΠ½ΡΡ
ΠΊΠΎΠ½Π³Π»ΠΎΠΌΠ΅ΡΠ°ΡΠΎΠ² ΡΠ°ΡΡΠΈΡ Π΄ΠΎ 500 Π½ΠΌ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ°Π±ΠΎΡΡ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΈ ΠΏΠΎΠ»ΡΡΠΈΡΡ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΡ ΠΎΠ± ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°Ρ
ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΠ΄ΠΎΠ² ΠΈ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π°Ρ
ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ ΡΡΡΡΠΊΡΡΡ TiO2-ΠΠ’ Π΄Π»Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΈΡ
Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΡΠ»Π΅ΠΊΡΡΠΎΠ΄ΠΎΠ² ΠΈΠΎΠ½ΠΈΡΡΡΠΎΠ².The object of this research is electrodes based on nanotubular titanium dioxide, modified by various methods (thermal treatment, synthesis of composites with carbon nanotubes and metallic nickel particles). The synthesized samples were investigated by scanning electron microscopy and various electrochemical analysis methods (galvanostatic charge-discharge, cyclic voltammetry, impedance spectroscopy). As a result of the study, were obtained: 1) T/TiO2-NT; 2) CNT/TiO2-NT; 3) Ni/TiO2-NT electrodes, which are: 1) arrays of TiO2-NT 3.5 ΞΌm thick, with an inner diameter of 70-80 nm and wall thickness 30-40 nm; 2) arrays of TiO2-NT with carbon nanotubes with a diameter of 10-30 nm and a length from tens of nm to tens of microns on the surface of the oxide layer; 3) arrays of TiO2-NT, decorated with spherical Ni nanoparticles with a diameter of 70-100 nm with the formation of local conglomerates of particles up to 500 nm. The results of the work made it possible to obtain information on the electrochemical characteristics of the synthesized electrodes and the advantages of modifying the TiO2-NT structures to use them as supercapacitor electrodes
PERMITTIVITY DETERMINATION IN NANOTUBULAR TITANIA
Titania nanotubes array with various morphologies were synthesized by anodization technique. Morphological parameters were regulated depending on the content of water and ammonium fluoride in the electrolyte. Capacitance and permittivity were measured for each sample with different morphology.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΏΡΠΈ ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠ΅ ΠΈΠ½ΠΈΡΠΈΠ°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π½Π°ΡΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ° β 16.5186.2017/8.9 ΠΠΈΠ½ΠΎΠ±ΡΠ½Π°ΡΠΊΠΈ Π Π€, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠΈ ΡΠΈΠ½Π°Π½ΡΠΎΠ²ΠΎΠΉ ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠ΅ Π Π€Π€Π Π² ΡΠ°ΠΌΠΊΠ°Ρ
Π½Π°ΡΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ° β 18-33-01072