Understanding and Predicting the Lithium Dendrite Formation in Li-Ion Batteries: Phase Field Model

2014 ◽  
Vol 61 (8) ◽  
pp. 1-9 ◽  
Author(s):  
H.-W. Zhang ◽  
Z. Liu ◽  
L. Liang ◽  
L. Chen ◽  
Y. Qi ◽  
...  
Keyword(s):  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Li Ion Batteries ◽  
Dendrite Formation ◽  
Li Ion ◽  
Lithium Dendrite

Integrating First-Principle Calculation and Phase-Field Simulation for Lithium Dendritic Growth on the Anode of a Lithium-Ion Battery

2016 ◽  
Author(s):  
Lei Chen
Keyword(s):  
Phase Field ◽  
First Principles ◽  
Field Model ◽  
Phase Field Model ◽  
Lithium Ion ◽  
First Principles Calculation ◽  
Li Ion Batteries ◽  
First Principle Calculation ◽  
Dendrite Formation ◽  
Li Ion

Lithium (Li) dendrite formation compromises the reliability of Li-ion batteries, either because dendrite pieces lose electrical contractor or growing dendrite penetrates the separator and leads to internal short-circuiting. In this paper, a multi-scale computational approach integrating phase-field model and first-principles calculation is proposed to predict the Li dendrite formation at the anode/electrolyte interface of Li-ion batteries. The first-principles calculation is employed to atomically determine the interfacial energy, which is subsequently fed into the phase-field model at the micro-scale. 1D distribution of fields is first analyzed to validate the proposed model. An apparent 2D tree-type Li dendrite, widely observed in experiments during electrodeposition, is produced using the model. Finally, the 2D dendritic evolution under different electrochemical conditions specified by the applied current densities is discussed.

MARMOT Phase-Field Model for the U-Si System

2016 ◽  
Author(s):  
Larry Kenneth Aagesen ◽  
Daniel Schwen
Keyword(s):  
Phase Field ◽  
Field Model ◽  
Phase Field Model

scholarly journals Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Min Yang ◽  
Lu Wang ◽  
Wentao Yan
Keyword(s):  
Additive Manufacturing ◽  
Phase Field ◽  
Field Model ◽  
Three Dimensional ◽  
Phase Field Model ◽  
Nucleation Theory ◽  
Experimental Result ◽  
Classical Nucleation Theory ◽  
Validation Experiment ◽  
Powder Particles

AbstractA three-dimensional phase-field model is developed to simulate grain evolutions during powder-bed-fusion (PBF) additive manufacturing, while the physically-informed temperature profile is implemented from a thermal-fluid flow model. The phase-field model incorporates a nucleation model based on classical nucleation theory, as well as the initial grain structures of powder particles and substrate. The grain evolutions during the three-layer three-track PBF process are comprehensively reproduced, including grain nucleation and growth in molten pools, epitaxial growth from powder particles, substrate and previous tracks, grain re-melting and re-growth in overlapping zones, and grain coarsening in heat-affected zones. A validation experiment has been carried out, showing that the simulation results are consistent with the experimental results in the molten pool and grain morphologies. Furthermore, the grain refinement by adding nanoparticles is preliminarily reproduced and compared against the experimental result in literature.

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