scholarly journals Simulation and Experiment on Solid Electrolyte Interphase (SEI) Morphology Evolution and Lithium-Ion Diffusion

2015 ◽  
Vol 162 (9) ◽  
pp. A1798-A1808 ◽  
Author(s):  
Pengjian Guan ◽  
Lin Liu ◽  
Xianke Lin
Keyword(s):  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Lithium Ion ◽  
Morphology Evolution ◽  
Ion Diffusion ◽  
Simulation And Experiment ◽  
Lithium Ion Diffusion

Lithium-ion Diffusion in Solid Electrolyte Interface (SEI) Predicted by Phase Field Model

2015 ◽  
Vol 1753 ◽  
Author(s):  
Pengjian Guan ◽  
Lin Liu
Keyword(s):  
Solid Electrolyte ◽  
Phase Field ◽  
Diffusion Coefficients ◽  
Field Model ◽  
Phase Field Model ◽  
Lithium Ion ◽  
Morphology Evolution ◽  
Ion Diffusion ◽  
Sei Layer ◽  
Lithium Ion Diffusion

ABSTRACTSolid electrolyte interface (SEI) layer plays a key role in lithium-ion batteries’ degradation research. However, SEI layer microstructure prediction still needs further investigation, especially the lithium-ion diffusion in SEI layer considering its morphology evolution during the growth of SEI. Due to the unique advantage of avoiding explicitly tracking the interfaces with sharp composition gradients, a phase field model is developed to simulate the SEI formation and its morphology evolution that is regarded as a solidification process. Fick’s law and mass balance are applied to investigate lithium-ion concentration distribution and diffusion coefficients of different SEI layers (i.e., compact and porous SEI layers) predicted by the developed phase field model. The simulation results show lithium-ion diffusion coefficients between 298K and 318K are 1.34-1.87(10-16) m2/s and 1.73-2.18(10-12) m2/s for compact SEI and porous SEI layer, respectively. The developed model has great potential to be extended to three dimensional spaces for SEI layer spatial growth investigation and other interfaces with complex morphology evolution.

scholarly journals Dynamics and morphology of solid electrolyte interphase (SEI)

2016 ◽  
Vol 18 (27) ◽  
pp. 17810-17814 ◽  
Author(s):  
Fabian Single ◽  
Birger Horstmann ◽  
Arnulf Latz
Keyword(s):  
Solid Electrolyte ◽  
Lithium Ion Battery ◽  
Solid Electrolyte Interphase ◽  
Lithium Ion ◽  
Morphology Evolution ◽  
Transport Mechanisms ◽  
Spatially Resolved

We develop a novel modeling scheme for the formation the solid electrolyte interphase (SEI) on lithium ion battery anodes. Our model is based on two transport mechanisms and predicts SEI morphology evolution in a spatially resolved way.

scholarly journals Hydrothermal Synthesis of MnV2O6 Nanorods as an Anode Material for Lithium-ion Batteries

2021 ◽  
Vol 299 ◽  
pp. 01008
Author(s):  
Lin Li ◽  
Wei Zheng ◽  
Rongfei Zhao ◽  
Jinsong Cheng
Keyword(s):  
Anode Material ◽  
Anode Materials ◽  
Lithium Ion ◽  
Time Dependent ◽  
Profile Measurement ◽  
Morphology Evolution ◽  
Ion Diffusion ◽  
Galvanostatic Charge ◽  
Discharge Profile ◽  
Lithium Ion Diffusion

The MnV2O6 nanorods anode materials was prepared by a simple hydrothermal method, MnCl2·2H2O and NH4VO3 as raw stuffs. The MnV2O6 nanorods anode materials were tested by SEM, XRD, and galvanostatic charge/discharge profile measurement. Time-dependent experiments were designed to examine the morphology evolution of the MnV2O6 nanorods anode materials. As an anode material, the MnV2O6 nanorods showed the good discharge capacity (403 mAh g−1 of 100th). The good electrochemical performance can be attributed to the synergistic effect with Mn and V elements, and fast lithium ion diffusion of the 1D nanorods structure.

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