Facile green synthesis of a Co3V2O8 nanoparticle electrode for high energy lithium-ion battery applications

Vaiyapuri Soundharrajan; Balaji Sambandam; Jinju Song; Sungjin Kim; Jeonggeun Jo; Pham Tung Duong; Seokhun Kim; Vinod Mathew; Jaekook Kim

doi:10.1016/j.jcis.2017.04.048

Facile green synthesis of a Co₃V₂O₈ nanoparticle electrode for high energy lithium-ion battery applications

J Colloid Interface Sci. 2017 Sep 1:501:133-141. doi: 10.1016/j.jcis.2017.04.048. Epub 2017 Apr 18.

Authors

Vaiyapuri Soundharrajan¹, Balaji Sambandam¹, Jinju Song¹, Sungjin Kim¹, Jeonggeun Jo¹, Pham Tung Duong¹, Seokhun Kim¹, Vinod Mathew¹, Jaekook Kim²

Affiliations

¹ Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, South Korea.
² Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, South Korea. Electronic address: jaekook@chonnam.ac.kr.

PMID: 28448833
DOI: 10.1016/j.jcis.2017.04.048

Abstract

In the present study, a metal-organic framework (MOF) derived from a facile water-assisted green precipitation technique is employed to synthesize phase-pure cobalt vanadate (Co₃V₂O₈, CVO) anode for lithium-ion battery (LIB) application. The material obtained by this eco-friendly method is systematically characterized using various techniques such as powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and N₂ adsorption-desorption measurements. By using as an anode, an initial discharge capacity of 1640mAhg^-1 and a reversible capacity of 1194mAhg^-1 are obtained at the applied current densities after the 240th cycle (2Ag^-1 for 200 cycles followed by 0.2Ag^-1 for 40 cycles). Moreover, a reversible capacity as high as 962mAhg^-1 is retained at high current densities even after 240 cycles (4Ag^-1 for 200 cycles followed by 2Ag^-1 for 40 cycles), revealing the long life stability of the electrode. Significantly, CVO anode composed of fine nanoparticles (NPs) registered a substantial rate performance and reversible specific capacities of 275, 390, 543 and 699mAhg^-1 at high reversibly altered current densities of 10, 5, 2, and 1Ag^-1, respectively.

Keywords: Cobalt vanadate; Facile precipitation; Lithium ion batteries; Long life stability; Metal-organic framework; Nanoparticles.