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Title: Micro/Macro-Scale Modeling for Battery Fast Charge Applications

Abstract

In conjunction with experiments at Argonne and Idaho National Laboratories, the National Renewable Energy Laboratory is applying physics-based electrochemical models at several length-scales to understand limitations and guide design of future battery electrodes for extreme fast charge of electric vehicles. Macro-homogeneous models show that today's battery technologies must use thin electrodes to avoid electrolyte depletion and lithium plating at a 6C (10-minute) charge rate. This compromises cost and energy density however. Goals are provided for next generation electrode tortuosity and electrolyte transport requirements to achieve 6C charge in a thick electrode system. Microstructure models provide quantitative understanding of tortuosity for several graphite electrodes and further predict heterogeneous utilization of the electrodes due to their morphology.

Authors:
ORCiD logo [1]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1467557
Report Number(s):
NREL/PR-5400-71254
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the U.S. Department of Energy's Vehicle Technologies Office 2018 Annual Merit Review and Peer Evaluation Meeting, 18-21 June 2018, Washington, D.C.
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 30 DIRECT ENERGY CONVERSION; lithium-ion battery; extreme fast charge; electrode microstructure; electrochemical model; microstructure model; tortuosity; morphology

Citation Formats

Smith, Kandler A. Micro/Macro-Scale Modeling for Battery Fast Charge Applications. United States: N. p., 2018. Web.
Smith, Kandler A. Micro/Macro-Scale Modeling for Battery Fast Charge Applications. United States.
Smith, Kandler A. Thu . "Micro/Macro-Scale Modeling for Battery Fast Charge Applications". United States. https://www.osti.gov/servlets/purl/1467557.
@article{osti_1467557,
title = {Micro/Macro-Scale Modeling for Battery Fast Charge Applications},
author = {Smith, Kandler A},
abstractNote = {In conjunction with experiments at Argonne and Idaho National Laboratories, the National Renewable Energy Laboratory is applying physics-based electrochemical models at several length-scales to understand limitations and guide design of future battery electrodes for extreme fast charge of electric vehicles. Macro-homogeneous models show that today's battery technologies must use thin electrodes to avoid electrolyte depletion and lithium plating at a 6C (10-minute) charge rate. This compromises cost and energy density however. Goals are provided for next generation electrode tortuosity and electrolyte transport requirements to achieve 6C charge in a thick electrode system. Microstructure models provide quantitative understanding of tortuosity for several graphite electrodes and further predict heterogeneous utilization of the electrodes due to their morphology.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {8}
}

Conference:
Other availability
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