Thermal transport in monocrystalline and polycrystalline lithium cobalt oxide

2019 ◽  
Vol 21 (23) ◽  
pp. 12192-12200 ◽  
Author(s):  
Jinlong He ◽  
Lin Zhang ◽  
Ling Liu
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Thermal Resistance ◽  
Cobalt Oxide ◽  
Electrode Material ◽  
Thermal Transport ◽  
Dynamics Simulation ◽  
Lithium Cobalt Oxide ◽  
Resistance Model ◽  
Lithium Cobalt

A thermal resistance model is combined with molecular dynamics simulation to quantify the thermal conductivities of LiCoO2, an electrode material for batteries.

The role of optical phonons in intermediate layer-mediated thermal transport across solid interfaces

2017 ◽  
Vol 19 (28) ◽  
pp. 18407-18415 ◽  
Author(s):  
Eungkyu Lee ◽  
Tengfei Luo
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Optical Phonon ◽  
Thermal Transport ◽  
Intermediate Layer ◽  
Dynamics Simulation ◽  
Optical Phonons ◽  
Spectral Matching

A study with molecular dynamics simulation shows that optical phonon vibrational spectral matching by an intermediate layer can significantly impact thermal transport across diatomic solid interfaces.

scholarly journals Thermal Transport in Graphene Oxide Films: Theoretical Analysis and Molecular Dynamics Simulation

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 285 ◽  
Author(s):  
Yi Yang ◽  
Dan Zhong ◽  
Yilun Liu ◽  
Donghui Meng ◽  
Lina Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Molecular Dynamics ◽  
Graphene Oxide ◽  
Molecular Dynamics Simulation ◽  
Thermal Transport ◽  
Oxide Films ◽  
Vacancy Defect ◽  
Transport Processes ◽  
Dynamics Simulation ◽  
Great Promise

As a derivative material of graphene, graphene oxide films hold great promise in thermal management devices. Based on the theory of Fourier formula, we deduce the analytical formula of the thermal conductivity of graphene oxide films. The interlaminar thermal property of graphene oxide films is studied using molecular dynamics simulation. The effect of vacancy defect on the thermal conductance of the interface is considered. The interfacial heat transfer efficiency of graphene oxide films strengthens with the increasing ratio of the vacancy defect. Based on the theoretical model and simulation results, we put forward an optimization model of the graphene oxide film. The optimal structure has the minimum overlap length and the maximum thermal conductivity. An estimated optimal overlap length for the GO (graphene-oxide) films with degree of oxidation 10% and density of vacancy defect 2% is 0.33 μm. Our results can provide effective guidance to the rationally designed defective microstructures on engineering thermal transport processes.

Effect of light atoms on thermal transport across solid–solid interfaces

2019 ◽  
Vol 21 (31) ◽  
pp. 17029-17035
Author(s):  
Ruiyang Li ◽  
Kiarash Gordiz ◽  
Asegun Henry ◽  
Patrick E. Hopkins ◽  
Eungkyu Lee ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Thermal Transport ◽  
Dynamics Simulation ◽  
Light Atoms ◽  
Effect Of Light

A study using molecular dynamics simulation shows that thermal transport across solid interfaces can be enhanced by introducing light atoms near the interface.

scholarly journals Molecular Dynamics Simulation of Thermal Transport in UO2 Containing Uranium, Oxygen, and Fission-product Defects

2016 ◽  
Vol 6 (4) ◽  
Author(s):  
X.-Y. Liu ◽  
M. W. D. Cooper ◽  
K. J. McClellan ◽  
J. C. Lashley ◽  
D. D. Byler ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Fission Product ◽  
Thermal Transport ◽  
Dynamics Simulation

Thermal resistance of crystal interface: Molecular dynamics simulation

2005 ◽  
Vol 34 (3) ◽  
pp. 135-146 ◽  
Author(s):  
Mitsuhiro Matsumoto ◽  
Hidenobu Wakabayashi ◽  
Toshiro Makino
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Thermal Resistance ◽  
Dynamics Simulation ◽  
Crystal Interface

Thermal conductance bottleneck of a three dimensional graphene–CNT hybrid structure: a molecular dynamics simulation

2020 ◽  
Vol 22 (1) ◽  
pp. 337-343 ◽  
Author(s):  
Zepei Yu ◽  
Yanhui Feng ◽  
Daili Feng ◽  
Xinxin Zhang
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Thermal Transport ◽  
Three Dimensional ◽  
Thermal Conductance ◽  
Hybrid Structure ◽  
Dynamics Simulation ◽  
Atomistic Structure

We observed the atomistic structure of the junction to study mechanism governing the thermal transport across GCNT.

Molecular Dynamics Study on Thermal Resistance Between Amorphous Silica Nanoparticles

2017 ◽  
Author(s):  
Fanhe Meng ◽  
Jin Liu ◽  
Robert F. Richards
Keyword(s):  
Molecular Dynamics ◽  
Thermal Resistance ◽  
Silica Nanoparticles ◽  
Amorphous Silica ◽  
Thermal Transport ◽  
Numerical Results ◽  
Dynamics Simulation ◽  
Total Thermal Resistance ◽  
Constriction Resistance ◽  
Dynamics Simulations

Nanoparticle-based materials have demonstrated extremely low thermal conductivities, a property that has made them attractive candidates in a variety of macroscale and microscale applications. Understanding the thermal transport between nanoparticles is necessary for the further development of these materials. Molecular dynamics simulation is an effective method to investigate thermal transport on these scales because no assumption about phonon transmission at the nanoparticle interface, nor prior knowledge of thermal transport of the system is necessary. In this work, the total thermal resistance between adjacent amorphous silica nanoparticles is calculated using non-equilibrium molecular dynamics simulations (NEMD). Numerical results show that interparticle resistance depends strongly on the forces between particles, in particular the presence or absence of chemical bonds between nanoparticles. In addition, the effect of interfacial force strength on thermal resistance increases as nanoparticle diameter decreases. Numerical results are compared to interparticle resistances determined from the predictions of the analytical constriction resistance model. The simulation results are shown to be in good agreement the constriction resistance theory depending on the choice of surface energy.

Sign in / Sign up

Export Citation Format

Share Document