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Comprehensive Modeling of Temperature-Dependent Degradation Mechanisms in Lithium Iron Phosphate Batteries

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.1181714jes· OSTI ID:1421782
For reliable lifetime predictions of lithium-ion batteries, models for cell degradation are required. A comprehensive semi-empirical model based on a reduced set of internal cell parameters and physically justified degradation functions for the capacity loss is developed and presented for a commercial lithium iron phosphate/graphite cell. One calendar and several cycle aging effects are modeled separately. Emphasis is placed on the varying degradation at different temperatures. Degradation mechanisms for cycle aging at high and low temperatures as well as the increased cycling degradation at high state of charge are calculated separately. For parameterization, a lifetime test study is conducted including storage and cycle tests. Additionally, the model is validated through a dynamic current profile based on real-world application in a stationary energy storage system revealing the accuracy. Tests for validation are continued for up to 114 days after the longest parametrization tests. In conclusion, the model error for the cell capacity loss in the application-based tests is at the end of testing below 1% of the original cell capacity and the maximum relative model error is below 21%.
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:
1421782
Report Number(s):
NREL/JA--5400-70616
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 2 Vol. 165; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

Battery health prediction under generalized conditions using a Gaussian process transition model text January 2018
Assessment of residential battery storage systems and operation strategies considering battery aging journal November 2019
Microstructural Degradation of Ni-Rich Li[Ni x Co y Mn 1 −x−y ]O 2 Cathodes During Accelerated Calendar Aging journal September 2018
Improving cyclability of Li metal batteries at elevated temperatures and its origin revealed by cryo-electron microscopy journal July 2019
Fast charging of lithium-ion batteries at all temperatures journal June 2018
Cycle Life Prediction of Aged Lithium-Ion Batteries from the Fading Trajectory of a Four-Parameter Model journal January 2018
Review and Performance Comparison of Mechanical-Chemical Degradation Models for Lithium-Ion Batteries journal January 2019
Ageing and Efficiency Aware Battery Dispatch for Arbitrage Markets Using Mixed Integer Linear Programming journal March 2019

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