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• W4308045506 endingPage "140140" @default.
• W4308045506 startingPage "140140" @default.
• W4308045506 abstract "We report the electrochemical investigation of 5% Al doped MoS 2 @rGO composite as a high-performance anode for sodium (Na)-ion batteries. The x-ray diffraction (XRD), Raman spectroscopy and high-resolution transmission electron microscopy characterizations reveal that the Al doping increase the interlayer spacing of (002) plane of MoS 2 nanosheets and form a stable 1T phase. The galvanostatic charge–discharge measurements show the specific capacity stable around 450, 400, 350, 300 and 200 mAhg −1 at current densities of 0.05, 0.1, 0.3, 0.5 and 1 Ag −1 , respectively. Also, we observe the capacity retentions of 86% and 66% at 0.1 and 0.3 Ag −1 , respectively, over 200 cycles with a consistent Coulombic efficiency of nearly 100%. The cyclic voltammetry, galvanostatic intermittent titration technique, and electrochemical impedance spectroscopy are used to find the kinetic behavior and the obtained value of diffusion coefficient falls in the range of 10 − 10 to 10 − 12 cm 2 s − 1 . Intriguingly, the in-situ EIS also explains the electrochemical kinetics of the electrode at different charge–discharge states with the variation of charge transfer resistance. Moreover, the post cycling investigation using ex-situ XRD and photoemission spectroscopy indicate the coexistence of 1T/2H phase and field-emission scanning electron microscopy confirm the stable morphology after 500 cycles. Also, the Na-ion transport properties are calculated for 1T Al–MoS 2 @rGO interface and Al–MoS 2 –MoS 2 interlayer host structure by theoretical calculations using density functional theory. • Stabilization of 1T Al-MoS2@rGO nanocomposite. • The porous flowery like architecture of composite with large active surface area. • A high-performance anode for sodium-ion batteries like 450mAhg −1 @ 0.05 Ag −1 . • Long stability over 200 cycles with a Coulombic efficiency of nearly 100%. • Understanding diffusion mechanism by detailed analysis of CV, GITT and EIS." @default.
• W4308045506 created "2022-11-07" @default.
• W4308045506 creator A5001046690 @default.
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• W4308045506 creator A5051140196 @default.
• W4308045506 creator A5067873495 @default.
• W4308045506 creator A5077782262 @default.
• W4308045506 date "2023-02-01" @default.
• W4308045506 modified "2023-09-30" @default.
• W4308045506 title "Diffusion mechanism and electrochemical investigation of 1T phase Al–MoS2@rGO nano-composite as a high-performance anode for sodium-ion batteries" @default.
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• W4308045506 doi "https://doi.org/10.1016/j.cej.2022.140140" @default.
• W4308045506 hasPublicationYear "2023" @default.

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