| Autor: |
Rasouli, Seyedeh Sepideh, Najafisayar, Pooria, Hessam, Ramtin |
| Předmět: |
|
| Zdroj: |
Journal of Electronic Materials; Feb2023, Vol. 52 Issue 2, p896-906, 11p |
| Abstrakt: |
In the present study, SnO2 films were deposited on graphite substrates by the pulse electrodeposition method. The effects of applied duty cycle and pulse current frequency on the structural, morphological and electrochemical properties of the electrodeposited films were investigated using x-ray diffraction spectroscopy, scanning electron microscopy, Mott-Schottky analysis, cyclic voltammetry and electrochemical impedance spectroscopy. The results show that SnO2 films with orthorhombic crystal structures will be deposited regardless of applied duty cycle and pulse current frequency values (in the ranges of 10% to 50% and 50 to 5000 mHz, respectively). Moreover, application of lower duty cycles and higher pulse current frequencies leads to the deposition of SnO2 films that have porous flower-like morphologies with more oxygen vacancies and smaller crystallite sizes; Li ions diffuse faster in films with such characteristics and they exhibit higher specific capacitance and more degree of reversibility in redox electrochemical reactions taking place in an aquatic supporting electrolyte. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink