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Carbon Free Nanostructured Plate like WS 2 with Excellent Lithium Storage Properties
Author(s) -
Sengupta Shilpi,
Kundu Manab
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202003510
Subject(s) - anode , lithium (medication) , materials science , battery (electricity) , carbon fibers , energy storage , tungsten , chemical engineering , transition metal , nanotechnology , lithium ion battery , electrode , metallurgy , composite material , chemistry , composite number , catalysis , organic chemistry , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
Abstract 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 2 ) with its intrinsically layered structure is a promising alternative anode candidate because of its high theoretical capacity. However, WS 2 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 2 (NP‐WS 2 ) by an easy one pot hydrothermal synthesis process. Without introducing any conducting carbonaceous materials, the P‐WS 2 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 −1 , respectively. During the cycling stability test at a rate of C/4, even after 200 cycles P‐ WS 2 delivered high delithiation capacity of 380 mAh g −1 . Even without incorporation of conducting carbonaceous materials, NP‐WS 2 demonstrated extraordinary lithium storage performance which indicates its potential as an alternative high capacity anode material for lithium‐ion battery.