Electrochemical lithium storage performance of ternary Zn-Co-Ni alloy thin film as negative electrodes by electrodeposition method

• Published in: Journal of alloys and compounds Vol. 509; no. 36; pp. 8933 - 8936
• Main Authors: GNANAMUTHU, Rm, CHANG WOO LEE
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier 08.09.2011
• Subjects: Anodes; Applied sciences; Cycles; Electrodes; Electroplating; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Lithium; Lithium batteries; Thin films; Transport and storage of energy; Zinc base alloys; Scanning electron microscopy; Electrochemical reactions; Nanofabrications; Metals and alloys; Anode; X-ray diffraction; Electrode material; Dispersive spectrometry; X ray diffraction; Thin film; Lithium battery; Thin films; Electrochemical properties; Cobalt alloy; Electrodeposition; Zinc alloy; Nanotechnology; Nickel alloy
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2011.06.075

Ternary Zn-Co-Ni alloy film electrode as an anode has been investigated, for the first time, for the purpose of electrochemical lithium storage in lithium-ion batteries. In this study, the ternary Zn-Co-Ni alloy film electrode is prepared by electroplating method. The electrodes were examined using X-ray diffraction (XRD), FE-SEM with EDX, and impedance studies. The electrochemical results demonstrate that the Zn-Co-Ni alloy film electrode delivers an initial discharge capacity of 281 mAh g super(-1 and improves to 650 mAh g) super(-)1 at the end of 30th cycling with no capacity fading at 0.1 C rate. The charge-discharge properties of the Zn-Co-Ni alloy film electrode are as follows: insertion capacity of 650 mAh g super(-1 and delithiation capacity of 512 mAh g) super(-)1 in the 30th cycling, coulombic efficiency of about 80.0% and good cycling behavior. The results suggest that the ternary Zn-Co-Ni alloy thin film electrode obtained via electroplating shows a good candidate anode material for lithium-ion batteries.