Electrochemical Influence of Nano-Spherical RuO2.xH2O Thin Film on Nickel Adhesion Layer as an Anode via Short-Time Pulse Current Technique for Energy Storage in Rechargeable Batteries. Issue 9 (1st January 2015)

• Record Type: Journal Article
• Authors: Gnanamuthu, RM.; Mohan, S.; Ahmad, Mahmoud Al; Arunachalam, R.; Maharaja, J.; Bhagat, Rohit
• Is Part Of: Journal of the Electrochemical Society. Volume 162:Issue 9(2015)
• Page Start: A1793
• Page End: A1797
• Publication Date: 2015-01-01
• Subjects: Charge-discharge -- Electrochemistry -- Energy storage -- Lithium -- Thin films; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0431509jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Hydrous ruthenium oxide (RuO2 .xH2 O) is successfully deposited on nickel (Ni) flashed layer, for the first time, to be used as nano-structured electrodes to enhance the energy storage capabilities. The optimized nanostructured RuO2 .xH2 O on Ni thin layer is prepared using short-time pulse electrodeposition technique at 10% duty cycle, 25 Hz frequency and peak current of 1 A/dm 2 on Cu foil substrate. The surface analysis of the prepared electrodes shows crystalline and Ru nano-particles forest sizes are ranging from 200 to 50 arranged in an ordered pattern, which is favorable for electrochemical Li-ion intercalation-de-intercalation reactions in the battery system. The discharge-charge reactions exhibit 89% columbic efficiency at 1 st cycle. Moreover, the capacities are significantly improved at the end of 25 th cycle with the good stability. The measured capacities of 771 mAh g −1 and 743 mAh g −1 with 96.3% at 0.1C rate to cutoff potential of 0.01 and 2 V vs. Li/Li + were recorded.