The application of catalyst-recovered SnO sub(2) as an anode material for lithium secondary batteries

• Published in: Environmental science and pollution research international 2016-08, Vol.23 (15), p.15015-15022
• Main Authors: Ryu, Da-Jeong, Jung, Hee-Won, Lee, Sung-Hun, Park, Da-Jeong, Ryu, Kwang-Sun
• Format: Article
• Language: English
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-016-6640-2

We studied the electrochemical characteristics of tin dioxide (SnO sub(2)) recovered from waste catalyst material which had been previously used in a polymer synthesis reaction. In order to improve the electrochemical performance of the SnO sub(2) anode electrode, we synthesized a nanocomposite of recovered SnO sub(2) and commercial iron oxide (Fe sub(2)O sub(3)) (weight ratio 95:5) using a solid state method. X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) analyses revealed an additional iron oxide phase within a porous nanocomposite architecture. The electrochemical characterizations were based on galvanostatic charge-discharge (CD) curves, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). In the first discharge, the capacity of the SnO sub(2)-Fe sub(2)O sub(3) nanocomposite was 1700 mAh g super(-1), but was reduced to about 1200 mAh g super(-1) in the second discharge. Thereafter, a discharge capacity of about 1000 mAh g super(-1)was maintained up to the 20th cycle. The SnO sub(2)-Fe sub(2)O sub(3) nanocomposite showed better reversible capacities and rate capabilities than either the recovered SnO sub(2) or commercial Fe sub(2)O sub(3) nanoparticle samples.