• Kundu, Manab
• Sengupta, Shilpi

Abstract

<jats:title>Abstract</jats:title><jats:p>As an attractive family of anode material for lithium‐ion battery (LIB), transition metal dichalcogenides (TMDs) with high energy density has been emerging very fast. Among various TMDs, tungsten disulphide (WS<jats:sub>2</jats:sub>) with its intrinsically layered structure is a promising alternative anode candidate because of its high theoretical capacity. However, WS<jats:sub>2</jats:sub> usually suffers from poor cycling stability due to its large volume change during lithiation and delithiation process. Herein, we have synthesized carbon free nanostructured plate like WS<jats:sub>2</jats:sub> (NP‐WS<jats:sub>2</jats:sub>) by an easy one pot hydrothermal synthesis process. Without introducing any conducting carbonaceous materials, the P‐WS<jats:sub>2</jats:sub> showing extraordinary lithium storage properties. At a C‐rate of C/8, the observed initial lithiation and delithiation capacities are 682.0 and 555.7 mAh g<jats:sup>−1</jats:sup>, respectively. During the cycling stability test at a rate of C/4, even after 200 cycles P‐ WS<jats:sub>2</jats:sub> delivered high delithiation capacity of 380 mAh g<jats:sup>−1</jats:sup>. Even without incorporation of conducting carbonaceous materials, NP‐WS<jats:sub>2</jats:sub> demonstrated extraordinary lithium storage performance which indicates its potential as an alternative high capacity anode material for lithium‐ion battery.</jats:p>

Topics

• density
• impedance spectroscopy
• Carbon
• energy density
• layered
• Lithium
• tungsten