Sonochemical synthesis of Co2SnO4 nanocubes for supercapacitor applications

Balasubramaniam Gnana Sundara Raj; Senniyappan Bhuvaneshwari; Jerry J Wu; Abdullah M Asiri; Sambandam Anandan

doi:10.1016/j.ultsonch.2017.10.006

Sonochemical synthesis of Co₂SnO₄ nanocubes for supercapacitor applications

Ultrason Sonochem. 2018 Mar:41:435-440. doi: 10.1016/j.ultsonch.2017.10.006. Epub 2017 Oct 5.

Authors

Balasubramaniam Gnana Sundara Raj¹, Senniyappan Bhuvaneshwari¹, Jerry J Wu², Abdullah M Asiri³, Sambandam Anandan⁴

Affiliations

¹ Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India.
² Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan.
³ The Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21413, P.O. Box 80203, Saudi Arabia.
⁴ Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India. Electronic address: sanand@nitt.edu.

PMID: 29137772
DOI: 10.1016/j.ultsonch.2017.10.006

Abstract

In this work, a simple sonochemical route was followed to synthesize cobalt stannate (Co₂SnO₄) nanocubes using stannous and cobalt chlorides as the precursors in alkaline medium at room temperature. The structure, composition and surface morphology of synthesized Co₂SnO₄ nanocubes have been characterized by using X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FT-IR), Field emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM) indicates that the Co₂SnO₄ nanocubes are crystalline, single-phase without any impurity phase; the sizes of nanocubes are ∼100 nm. The cyclic voltammetry, galvanostatic charge-discharge cycling test, and electrochemical impedance spectroscopy (EIS) measurements are carried out for the Co₂SnO₄ nanocubes shows a specific capacitance 237 F g^-1 at 0.5 mA cm^-2 current density and in 1 M Na₂SO₄ electrolyte. Co₂SnO₄ nanocubes exhibit long cycling life with 80% retention of initial capacitance after 2000 cycles and the excellent rate capability at 15 mA cm^-2 as much as 70% of that at 0.5 mA cm^-2 suggest its potential use for supercapacitor applications.

Keywords: Co(2)SnO(4) nanocubes; Energy storage; Galvanostatic charge-discharge cycling test; Ragone plot; Supercapacitors.