Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1608368 | Journal of Alloys and Compounds | 2015 | 8 Pages |
Abstract
Cycling stability of pure tin electrodes was aimed to improve by using suitable combination of nickel and multiwalled carbon nanotubes (MWCNTs). Nanocrystalline Sn-Ni/MWCNT composite was prepared by ultrasonic-pulse electrodeposition on a copper substrate in a pyrophosphate bath containing different concentrations of multi-walled carbon nanotubes. Surface morphology of produced Sn-Ni/MWCNT composites were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) was conducted to understand the elemental surface composition of composites. X-ray diffraction analysis was carried out to investigate structure of Sn-Ni/MWCNT composites. The electrochemical performances of Sn-Ni/MWCNT composite electrodes have been investigated by charge/discharge tests, cyclic voltammetric experiments and the ac impedance technique. These cells discharge capacity cyclically tested by a battery tester at a constant current in voltage range between 0.02Â V and 1.5Â V. The concentrations of MWCNTs were shown to be a crucial factor to improve Sn-Ni/MWCNT composite anodes for cyclability and reversible capacity.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Mehmet Uysal, Tugrul Cetinkaya, Ahmet Alp, Hatem Akbulut,