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Title: Secondary-Phase Stochastics in Lithium-Ion Battery Electrodes

Journal Article · · ACS Applied Materials and Interfaces

Lithium-ion battery electrodes exhibit complex interplay among multiple electrochemically coupled transport processes, which rely on the underlying functionality and relative arrangement of different constituent phases. The electrochemically inactive solid phases (e.g., conductive additive and binder, referred to as the secondary phase), while beneficial for improved electronic conductivity and mechanical integrity, may partially block the electrochemically active sites and introduce additional transport resistances in the pore (electrolyte) phase. In this work, the role of mesoscale interactions and inherent stochasticity in porous electrodes is elucidated in the context of short-range (interface) and long-range (transport) characteristics. The electrode microstructure significantly affects kinetically and transport-limiting scenarios and thereby the cell performance. The secondary-phase morphology is also found to strongly influence the microstructure-transport-kinetics interactions. Apropos, strategies have been proposed for performance improvement via electrode microstructural modifications.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1419417
Report Number(s):
NREL/JA-5400-70743
Journal Information:
ACS Applied Materials and Interfaces, Vol. 10, Issue 7; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 95 works
Citation information provided by
Web of Science

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Cited By (13)

Volume-Averaged Electrochemical Performance Modeling of 3D Interpenetrating Battery Electrode Architectures journal September 2019
Numerical Prediction of Multiscale Electronic Conductivity of Lithium-Ion Battery Positive Electrodes journal January 2019
Perspective—Mesoscale Physics in the Catalyst Layer of Proton Exchange Membrane Fuel Cells journal January 2019
Mesoscale Electrochemical Performance Simulation of 3D Interpenetrating Lithium-Ion Battery Electrodes journal January 2019
Modeling and Simulation of Pore Morphology Modifications using Laser-Structured Graphite Anodes in Lithium-Ion Batteries journal September 2019
Probing spatial coupling of resistive modes in porous intercalation electrodes through impedance spectroscopy journal January 2019
Non-equilibrium thermodynamics in electrochemical complexation of Li–oxygen porous electrodes journal January 2019
A Multi-Physics Battery Model with Particle Scale Resolution of Porosity Evolution Driven by Intercalation Strain and Electrolyte Flow journal January 2018
Deconstructing electrode pore network to learn transport distortion journal December 2019
Progress in 3D electrode microstructure modelling for fuel cells and batteries: transport and electrochemical performance journal July 2019
Editors' Choice—Mesoscale Analysis of Conductive Binder Domain Morphology in Lithium-Ion Battery Electrodes journal January 2018
A multi-physics battery model with particle scale resolution of porosity evolution driven by intercalation strain and electrolyte flow preprint January 2018
Quantifying the unknown impact of segmentation uncertainty on image-based simulations text January 2020

Figures / Tables (6)


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