[Case Study] Investigation of Graphene Materials for Li-S Batteries

basic information

【Tools】 ■ Quantum Mechanics Simulation Tool ■ Classical Simulation Tool ■ Mesoscale Simulation Tool ■ Statistical Tool ■ Analysis/Crystallization Tool 【Examples】 ・Crystal Growth ・Behavior of Atoms on Crystal Surfaces ・Crystal Analysis ・Calculation of Physical Properties ・Sputtering Simulation ・Improvement of Lubricant Performance ・Catalysts ・Tribochemical (Lubrication) Reactions 　　　etc. 【Product Features】 ■ Supports various types of materials ■ Allows for the creation of crystal structures, setting of calculation conditions, and display of calculation results all within a single GUI screen *For more details, please feel free to contact us. Wavefront Co., Ltd. Sales Department MAIL: sales@wavefront.co.jp URL: http://www.wavefront.co.jp/

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Detailed information

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  Materials Studio provides a graphical user environment called Materials Studio Visualizer, which can be used to create, manipulate, and display models of molecules, crystals, surfaces, polymers, and mesoscale structures.

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  Multiscale Simulation of Materials 'Materials Studio' is a comprehensive modeling/simulation platform equipped with: - Quantum mechanics (Density Functional Theory) - Classical mechanics (Molecular Dynamics Calculations) - Mesoscale (Dissipative Particle Dynamics Calculations, etc.) along with statistical, analytical, and crystallization tools.

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  This paper analyzes the behavior of water molecules adsorbed on surfaces such as V2O5(1 0 0) using Materials Studio.

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  ◎Calculation Model and Method We are using the CASTEP module in 'Materials Studio', which can handle a wide range of computational targets in quantum mechanical calculations. - Vanadium pentoxide (V2O5) is applied as the adsorbate, and water is applied as the adsorbed substance. - Adsorption simulations are conducted in three directions, and the reaction pathways are compared. - Each reaction pathway can be derived through transition state search using the LST/QST method.

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  ◎Discussion of the Required Physical Properties - Comparing the results, the reaction energy barrier on the (0 0 1) surface is the highest, and the stability after adsorption is also the greatest, indicating that water molecules adsorbed on this surface are thermodynamically difficult to dissociate. - Focusing on the other two surfaces, it can be observed that the V-O bond distance becomes very close when water molecules adsorb on the V2O5 surface. - Such a change in distance suggests that the V2O5 catalyst can take up oxygen atoms from water molecules, and this phenomenon is known to be consistent with experimental results.