Triclinic LiVPO4F/C cathode for aqueous rechargeable lithium-ion batteries

¹Department of Chemistry and Research Center, N.M.K.R.V. College for Women, Jayanagar, Bangalore 560011, India

²PG-Center, Kuvempu University, Kadur 577548, Karnataka, India

³Department of Chemistry, School of Chemical Science, Kuvempu University, Shankaraghatta, 577451 Shimoga, Karnataka, India

Adv. Mater. Lett., 2019, 10 (3), pp 193-200

DOI: 10.5185/amlett.2019.2141

Publication Date (Web): Dec 31, 2018

Copyright © IAAM-VBRI Press

E-mail: sureshssmrv@yahoo.co.in

Abstract

Triclinic LiVPO₄F/C composite material is synthesized by Reaction under autogenic pressure at elevated temperature (RAPET) method and for the first time, we have evaluated the electrochemical properties and performance in aqueous electrolyte. Structural and morphological features of the material has been characterized using X-ray diffraction and scanning electron microscopy techniques. The electrochemical properties and performance of the material has been evaluated by using cyclic voltammetry, galvanostatic charge/discharge studies, electrochemical impedance spectroscopic technique and potentiostatic intermittent titration technique. The complete electrochemical studies of LiVPO₄F/C composite material has been performed in 0.1M Li₂NO₃ with 0.05 mL glycerine as an additive in 10 mL of H₂O as an aqueous electrolyte and its working mechanism was described using standard three-electrodes as well as two electrode configurations. 

Keywords

Aqueous electrolyte, LiVPO₄F/C, LiTiPO₄F, RAPET, electrochemical studies.