Aging formula for lithium ion batteries with solid electrolyte interphase layer growth

Tanvir R. Tanim, Christopher D. Rahn

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Hybrid Electric Vehicle (HEV) current profiles are dynamic, consisting of repeated charge and discharge pulses. Accurate prediction of the battery response to these inputs requires models with open circuit voltage and Butler-Volmer kinetic nonlinearities. This paper derives a nonlinear, electrolyte-enhanced, single particle model (NESPM) that includes aging due to solid electrolyte interphase layer growth. The model is validated with experimental full charge, discharge, HEV cycle, and aging data from 4.5 Ah graphite/LiFePO4 cells. The NESPM is capable of operating up to 3C constant charge-discharge cycles and up to 25C and 10 s charge-discharge pulses within 35-65% state of charge (SOC) with less than 2% error. The NESPM aging model is then simplified to obtain explicit formulas for capacity fade and impedance rise that depend on the battery parameters and current input history. The formulas show that aging increases with SOC, operating temperature, time, and root mean square (RMS) current. The formula predicts that HEV current profiles with the (i) same average SOC, (ii) small SOC swing, (iii) same operating temperature, (iv) same cycle length, and (v) same RMS current, will have the same cell capacity fade.

Original languageEnglish (US)
Pages (from-to)239-247
Number of pages9
JournalJournal of Power Sources
Volume294
DOIs
StatePublished - Jun 22 2015

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Solid electrolytes
solid electrolytes
electric batteries
lithium
Aging of materials
electric hybrid vehicles
Hybrid vehicles
Electrolytes
ions
electrolytes
operating temperature
cycles
Graphite
Open circuit voltage
profiles
pulses
open circuit voltage
cells
Lithium-ion batteries
graphite

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

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abstract = "Hybrid Electric Vehicle (HEV) current profiles are dynamic, consisting of repeated charge and discharge pulses. Accurate prediction of the battery response to these inputs requires models with open circuit voltage and Butler-Volmer kinetic nonlinearities. This paper derives a nonlinear, electrolyte-enhanced, single particle model (NESPM) that includes aging due to solid electrolyte interphase layer growth. The model is validated with experimental full charge, discharge, HEV cycle, and aging data from 4.5 Ah graphite/LiFePO4 cells. The NESPM is capable of operating up to 3C constant charge-discharge cycles and up to 25C and 10 s charge-discharge pulses within 35-65{\%} state of charge (SOC) with less than 2{\%} error. The NESPM aging model is then simplified to obtain explicit formulas for capacity fade and impedance rise that depend on the battery parameters and current input history. The formulas show that aging increases with SOC, operating temperature, time, and root mean square (RMS) current. The formula predicts that HEV current profiles with the (i) same average SOC, (ii) small SOC swing, (iii) same operating temperature, (iv) same cycle length, and (v) same RMS current, will have the same cell capacity fade.",
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Aging formula for lithium ion batteries with solid electrolyte interphase layer growth. / Tanim, Tanvir R.; Rahn, Christopher D.

In: Journal of Power Sources, Vol. 294, 22.06.2015, p. 239-247.

Research output: Contribution to journalArticle

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