Strain-engineered BlueP-MoS₂ van der Waals heterostructure with improved lithiation/sodiation for LIBs and SIBs

Area of Science:

• Materials Science
• Condensed Matter Physics
• Electrochemistry

Background:

• Van der Waals (vdW) heterostructures offer unique properties derived from their constituent monolayers.
• Strain engineering in 2D materials allows for greater strain tolerance than bulk materials.
• BlueP-MoS2 heterostructures are promising for energy storage applications.

Purpose of the Study:

• To investigate the impact of strain on BlueP-MoS2 vdW heterostructures for Li-ion (LIBs) and Na-ion (SIBs) batteries.
• To explore strain-induced modifications in ion adsorption, storage capacity, and electronic properties.
• To assess the potential of strained BlueP-MoS2 for flexible nanoelectronic devices.

Main Methods:

• First-principles Density Functional Theory (DFT) calculations.
• Simulation of vertically aligned MoS2 and BlueP monolayers with varying strain.
• Analysis of Li/Na adsorption, storage properties, and electronic structure.

Main Results:

• Strain enhances Li/Na adsorption and storage capacity in BlueP-MoS2 heterostructures.
• Strain ensures high Li/Na mobility, leading to improved charge/discharge rates.
• Applied strain transforms the heterostructure from a semiconductor to a metal, boosting conductivity.

Conclusions:

• Strained BlueP-MoS2 vdW heterostructures demonstrate superior performance for LIBs and SIBs.
• The enhanced properties suggest significant potential for flexible nanoelectronic applications.
• Strain engineering is a viable strategy to optimize 2D materials for energy storage.