Electrodeposition and electrochemical investigation of thin film Sn–Co–Ni alloy anode for lithium-ion batteries

• Published in: Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2011-09, Vol.176 (16), p.1329-1332
• Main Authors: Gnanamuthu, R.M., Lee, Chang Woo
• Format: Article
• Language: English
• Subjects: Alloy anode; Anodes; Charge; Discharge; Electrodes; Electroplating; Lithium intercalation; Lithium-ion batteries; Materials science; Sn–Co–Ni alloy; Thin films; Tin base alloys
• ISSN: 0921-5107; 1873-4944
• DOI: 10.1016/j.mseb.2011.07.019

► A novel attempt for thin film Sn–Co–Ni alloy anode material for Li-ion rechargeable batteries. ► The thin film Sn–Co–Ni alloy porous anode was prepared by electroplating by using DC power source. ► The rod like structure of thin film Sn–Co–Ni alloy was more crystalline. ► The cycling performance of thin film Sn–Co–Ni alloy anode initial specific capacity of about 717 mAh g −1 at 0.1 C rate. The thin film Sn–Co–Ni alloy electrodes were prepared by electroplating on copper foil as current collector. The structure of the electroplated porous thin film Sn–Co–Ni alloy electrode is investigated by XRD, FE-SEM, and EDAX. The electrochemical performance is analyzed by using a battery cycler at the current rate of 0.1 C to cut-off potentials of 0.01 and 1.20 V vs. Li/Li + and also cyclic voltammeter. Experimental results illustrate that the initial discharge capacity of the Sn–Co–Ni alloy anode is 717 mAh g −1. The discharge capacity has been in increasing order between 2nd and 10th cycling and then maintained the stable capacity. It is found that the charge and discharge capacity of thin film Sn–Co–Ni alloy electrode obtained an average reversibility behavior and the better cycle stability.