DOI

High specific capacity of anode materials based on MoS2 is attractive for their use in lithium-ion
batteries. However, low cycling stability of bulk MoS2 and complicated conversion mechanism of charge
storage are major challenges for adoption of such materials as anodes for lithium-ion batteries. In this
work, we focus on the effects of electrode thickness on electrochemical performance of anodes based on
MoS2. We assess whether variation of thickness is a viable strategy to enhance the stability of such
materials. Among electrodes with thickness varied within 70-250 μm, those with 100 μm to 150 μm
material thickness display the most favorable rate capability in galvanostatic charge-discharge tests (32%
of initial capacity at 2 A g
-1
), which is linked to their low charge transfer resistance, as shown by
electrochemical impedance spectroscopy. We also show that conductive polymer binder based on
PEDOT:PSS and CMC facilitates charge transfer, as compared to conventional PVDF binder.
Electrochemical studies and investigations with SEM, HR-XRD, and XPS methods show that
irreversible processes occur in the electrodes and point at the necessity of substantial MoS2 materials
modification to preserve their stability.
Original languageEnglish
Article number211023
Pages (from-to)1-23
Number of pages23
JournalInternational Journal of Electrochemical Science
Volume16
Issue number10
DOIs
StatePublished - 1 Oct 2021

    Scopus subject areas

  • Electrochemistry

    Research areas

  • anode material, conducting polymer, PEDOT:PSS, molybdenum disulfide, electrode thickness, lithium-ion batteries, Pedot Pss, Lithium-Ion Batteries, Molybdenum Disulfide, Electrode Thickness, Anode Material, Conducting Polymer, ASSISTED SYNTHESIS, CAPACITY, CARBON, EXCELLENT ELECTROCHEMICAL PERFORMANCES, GRAPHENE, SURFACE MODIFICATION, NANOSHEETS, COMPOSITE, ELECTROCATALYTIC ACTIVITY, IN-SITU

ID: 85706974