Maleimide: a potential building block for the design of proton exchange membranes studied by ab initio molecular dynamics simulations

RSC Advances ◽  
2015 ◽  
Vol 5 (98) ◽  
pp. 80220-80227 ◽  
Author(s):  
Xuejiao Li ◽  
Liuming Yan ◽  
Baohua Yue
Keyword(s):  
Molecular Dynamics ◽  
Solid State ◽  
Ab Initio ◽  
Molecular Dynamics Simulations ◽  
Building Block ◽  
Proton Transport ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Ab Initio Molecular Dynamics ◽  
Dynamics Simulations

Ab initio molecular dynamics (AIMD) simulations are applied to the study of proton transport in solid state maleimide.

Proton transport mechanism of imidazole, triazole and phosphoric acid mixtures from ab initio molecular dynamics simulations

2015 ◽  
Vol 17 (45) ◽  
pp. 30551-30559 ◽  
Author(s):  
Swagata Pahari ◽  
Sudip Roy
Keyword(s):  
Molecular Dynamics ◽  
Phosphoric Acid ◽  
Ab Initio ◽  
Molecular Dynamics Simulations ◽  
First Principles ◽  
Proton Transport ◽  
Transport Mechanism ◽  
Ab Initio Molecular Dynamics ◽  
Dynamics Simulations

We have performed first principles molecular dynamics simulations to elucidate the mechanism and role of 1,2,3-triazole in proton transport while it is mixed with phosphoric acid (PA) and a phosphoric acid imidazole mixture.

scholarly journals Ultrafast proton transport in water-methanol mixtures

2019 ◽  
Vol 205 ◽  
pp. 09004
Author(s):  
Maria Ekimova ◽  
Felix Hoffmann ◽  
Gul Bekcioglu-Neff ◽  
Aidan Rafferty ◽  
Erik T. J. Nibbering ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Free Energy ◽  
Ab Initio ◽  
Molecular Dynamics Simulations ◽  
Proton Transport ◽  
Ab Initio Molecular Dynamics ◽  
Transport Pathway ◽  
Pump Probe ◽  
Dynamics Simulations

Femtosecond UV/IR pump-probe experiments and ab initio molecular dynamics simulations of 7-hydroxyquinoline in water-methanol mixtures demonstrate an unexpectedly dominant OH-/CH3O- transport pathway but consistent with a solvent-dependent photoacidity free energy-reactivity correlation behaviour.

scholarly journals Diffusion of lithium ions in Lithium-argyrodite solid-state electrolytes

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Ardeshir Baktash ◽  
James C. Reid ◽  
Tanglaw Roman ◽  
Debra J. Searles
Keyword(s):  
Molecular Dynamics ◽  
Solid State ◽  
Ab Initio ◽  
Molecular Dynamics Simulations ◽  
Diffusion Coefficients ◽  
Ab Initio Molecular Dynamics ◽  
Nonequilibrium Molecular Dynamics ◽  
Lithium Ions ◽  
Solid State Electrolytes ◽  
Dynamics Simulations

Abstract The use of solid-state electrolytes to provide safer, next-generation rechargeable batteries is becoming more feasible as materials with greater stability and higher ionic diffusion coefficients are designed. However, accurate determination of diffusion coefficients in solids is problematic and reliable calculations are highly sought-after to understand how their structure can be modified to improve their performance. In this paper we compare diffusion coefficients calculated using nonequilibrium and equilibrium ab initio molecular dynamics simulations for highly diffusive solid-state electrolytes, to demonstrate the accuracy that can be obtained. Moreover, we show that ab initio nonequilibrium molecular dynamics can be used to determine diffusion coefficients when the diffusion is too slow for it to be feasible to obtain them using ab initio equilibrium simulations. Thereby, using ab initio nonequilibrium molecular dynamics simulations we are able to obtain accurate estimates of the diffusion coefficients of Li ions in Li6PS5Cl and Li5PS4Cl2, two promising electrolytes for all-solid-state batteries. Furthermore, these calculations show that the diffusion coefficient of lithium ions in Li5PS4Cl2 is higher than many other potential all-solid-state electrolytes, making it promising for future technologies. The reasons for variation in conductivities determined using computational and experimental methods are discussed. It is demonstrated that small degrees of disorder and vacancies can result in orders of magnitude differences in diffusivities of Li ions in Li6PS5Cl, and these factors are likely to contribute to inconsistencies observed in experimentally reported values. Notably, the introduction of Li-vacancies and disorder can enhance the ionic conductivity of Li6PS5Cl.

Structure of phosphorus-selenium glasses: results from ab initio molecular dynamics simulations

2000 ◽  
Vol 98 (11) ◽  
pp. 701-707
Author(s):  
Alessandro Sergi, Mauro Ferrario, Francesco Bu
Keyword(s):  
Molecular Dynamics ◽  
Ab Initio ◽  
Molecular Dynamics Simulations ◽  
Ab Initio Molecular Dynamics ◽  
Dynamics Simulations
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