Improved discharge-charge properties of tin electrode using silver nanoparticles for energy storage and conversion in batteries

• Published in: Materials chemistry and physics 2018-02, Vol.205, p.147-153
• Main Authors: Gnanamuthu, R.M., Wilson, Neil, Bhagat, Rohit
• Format: Article
• Language: English
• Subjects: Atomic force microscopy; Batteries; Capacity; Copper; Discharge; Electrodes; Energy storage; Insertion; Li-ion batteries; Lithium-ion batteries; Metal foils; Rechargeable batteries; Silver; Storage batteries; Surfaces; Thin films; Tin; Tin chloride
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2017.09.072

We designed a Sn-Ag thin film electrode to improving the reversibility (charge) performance and attempted to replace the pure Sn (tin), which is poor reversibility behaviour (approximately 50–60% efficiency) as an anode in rechargeable Li-ion batteries. The prepared Ag3Sn material is electrochemically deposited onto Cu foil using tin chloride-silver nitrate solution by electrochemically deposited at short time process. The specific discharge-charge capacities of the Ag3Sn surface is 1034 mAh g−1∼1025 mAh g−1 at 0.1C rate which is higher coulombic efficiency (insertion/de-insertion) of 99.1% than that of pure Sn (theoretical capacity 994 mAh g−1). Thus, the prepared materials are improved the reversibility behaviour in the full cell Li-ion (2032 size) rechargeable batteries. [Display omitted] •Sn alloy thin film electrode was successfully prepared via electrodeposition.•Dispersion of Ag nanoparticles on pocket shaped Sn micro architecture.•The EIS results demonstrate that Sn-Ag thin electrode with low impedance.•The CV results showed good redox behaviour and discharge-charge performance.•The capacity retention is maintained as 99.1% and 99.9% during the charge/discharge.