Low-temperature combustion synthesis of hexagonal WO3.0.33H2O@C as anode material for lithium ion batteries

Low-temperature combustion route is developed for the synthesis of WO3.0.33H2O with different amounts of carbon as a composite anode for lithium ion batteries (LIBs). WO3.0.33H2O@C nanoparticles have hexagonal crystal structure. The electrochemical properties are studied using cyclic voltammetry and galvanostatic charge/discharge cycling. The electrochemical tests demonstrate that the lithium storage capacity of WO3.0.33H2O@C anode has been greatly improved by an appropriate amount of carbon coating, which could maintain a reversible discharge capacity of 816 mAh g(-1) after 200 cycles at 100 mA g(-1). Its long cycle stability and excellent rate capability are attributed to high electronic conductivity of the appropriate amorphous carbon layer and the unique hexagonal structure of the nanocomposite. (C) 2017 Elsevier B.V. All rights reserved.