Aging Mechanisms of Electrodes in LiFePO4/Graphite Batteries

Yaqi Li; Alex Juul Søgaard; Jonas Ilum Sørensen; Jia Guo; Daniel-Ioan Stroe; Kjeld Pedersen; Leonid Gurevich

doi:10.1109/ECCE50734.2022.9947680

Aging Mechanisms of Electrodes in LiFePO4/Graphite Batteries

Yaqi Li, Alex Juul Søgaard, Jonas Ilum Sørensen, Jia Guo, Daniel-Ioan Stroe, Kjeld Pedersen, Leonid Gurevich

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

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Abstract

In the last decade, lithium-ion batteries (LIBs) have become ubiquitous in many technological fields. However, their diagnostics and remaining lifetime estimation are far from being established. To this end, an important aspect is establishing a correlation between the physical changes occurring to the battery materials upon aging and the data obtained by non-destructive measurements. In this paper, we report a methodology for post-mortem analysis of LiFePO4/Graphite batteries involving a range of experimental techniques, including scanning electron microscopy, Raman spectroscopy, and electrochemical impedance spectroscopy, as well as some preliminary results on the correlation of observed microscopic changes and aging parameters. In particular, a larger cycle depth and higher average state-of-charge led to increased battery degradation manifested as morphological and composition changes in anode and cathode, respectively.

Original language	English
Title of host publication	2022 IEEE Energy Conversion Congress and Exposition
Number of pages	6
Publisher	IEEE
Publication date	30 Nov 2022
Article number	9947680
ISBN (Print)	978-1-7281-9388-5
ISBN (Electronic)	978-1-7281-9387-8
DOIs	https://doi.org/10.1109/ECCE50734.2022.9947680
Publication status	Published - 30 Nov 2022
Event	2022 IEEE Energy Conversion Congress and Exposition (ECCE) - Detroit, MI, USA, Detroit, United States Duration: 9 Oct 2022 → 13 Oct 2022 https://www.ieee-ecce.org/2022/

Conference

Conference	2022 IEEE Energy Conversion Congress and Exposition (ECCE)
Location	Detroit, MI, USA
Country/Territory	United States
City	Detroit
Period	09/10/2022 → 13/10/2022
Internet address	https://www.ieee-ecce.org/2022/

Series	IEEE Energy Conversion Congress and Exposition
ISSN	2329-3721

Keywords

Lithium-ion Battery
Post-mortem Analysis
State of Health

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10.1109/ECCE50734.2022.9947680

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@inproceedings{ddda0ade911a4d539e05b68d5920e88a,

title = "Aging Mechanisms of Electrodes in LiFePO4/Graphite Batteries",

abstract = "In the last decade, lithium-ion batteries (LIBs) have become ubiquitous in many technological fields. However, their diagnostics and remaining lifetime estimation are far from being established. To this end, an important aspect is establishing a correlation between the physical changes occurring to the battery materials upon aging and the data obtained by non-destructive measurements. In this paper, we report a methodology for post-mortem analysis of LiFePO4/Graphite batteries involving a range of experimental techniques, including scanning electron microscopy, Raman spectroscopy, and electrochemical impedance spectroscopy, as well as some preliminary results on the correlation of observed microscopic changes and aging parameters. In particular, a larger cycle depth and higher average state-of-charge led to increased battery degradation manifested as morphological and composition changes in anode and cathode, respectively.",

keywords = "Lithium-ion Battery, Post-mortem Analysis, State of Health",

author = "Yaqi Li and S{\o}gaard, {Alex Juul} and S{\o}rensen, {Jonas Ilum} and Jia Guo and Daniel-Ioan Stroe and Kjeld Pedersen and Leonid Gurevich",

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day = "30",

doi = "10.1109/ECCE50734.2022.9947680",

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series = "IEEE Energy Conversion Congress and Exposition",

booktitle = "2022 IEEE Energy Conversion Congress and Exposition",

publisher = "IEEE",

address = "United States",

note = "2022 IEEE Energy Conversion Congress and Exposition (ECCE), IEEE ECCE 2022 ; Conference date: 09-10-2022 Through 13-10-2022",

url = "https://www.ieee-ecce.org/2022/",

}

Li, Y, Søgaard, AJ, Sørensen, JI, Guo, J, Stroe, D-I , Pedersen, K & Gurevich, L 2022, Aging Mechanisms of Electrodes in LiFePO4/Graphite Batteries. in 2022 IEEE Energy Conversion Congress and Exposition., 9947680, IEEE, IEEE Energy Conversion Congress and Exposition, 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, Michigan, United States, 09/10/2022. https://doi.org/10.1109/ECCE50734.2022.9947680

Aging Mechanisms of Electrodes in LiFePO4/Graphite Batteries. / Li, Yaqi; Søgaard, Alex Juul; Sørensen, Jonas Ilum et al.
2022 IEEE Energy Conversion Congress and Exposition. IEEE, 2022. 9947680 (IEEE Energy Conversion Congress and Exposition).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Aging Mechanisms of Electrodes in LiFePO4/Graphite Batteries

AU - Li, Yaqi

AU - Søgaard, Alex Juul

AU - Sørensen, Jonas Ilum

AU - Guo, Jia

AU - Stroe, Daniel-Ioan

AU - Pedersen, Kjeld

AU - Gurevich, Leonid

PY - 2022/11/30

Y1 - 2022/11/30

N2 - In the last decade, lithium-ion batteries (LIBs) have become ubiquitous in many technological fields. However, their diagnostics and remaining lifetime estimation are far from being established. To this end, an important aspect is establishing a correlation between the physical changes occurring to the battery materials upon aging and the data obtained by non-destructive measurements. In this paper, we report a methodology for post-mortem analysis of LiFePO4/Graphite batteries involving a range of experimental techniques, including scanning electron microscopy, Raman spectroscopy, and electrochemical impedance spectroscopy, as well as some preliminary results on the correlation of observed microscopic changes and aging parameters. In particular, a larger cycle depth and higher average state-of-charge led to increased battery degradation manifested as morphological and composition changes in anode and cathode, respectively.

AB - In the last decade, lithium-ion batteries (LIBs) have become ubiquitous in many technological fields. However, their diagnostics and remaining lifetime estimation are far from being established. To this end, an important aspect is establishing a correlation between the physical changes occurring to the battery materials upon aging and the data obtained by non-destructive measurements. In this paper, we report a methodology for post-mortem analysis of LiFePO4/Graphite batteries involving a range of experimental techniques, including scanning electron microscopy, Raman spectroscopy, and electrochemical impedance spectroscopy, as well as some preliminary results on the correlation of observed microscopic changes and aging parameters. In particular, a larger cycle depth and higher average state-of-charge led to increased battery degradation manifested as morphological and composition changes in anode and cathode, respectively.

KW - Lithium-ion Battery

KW - Post-mortem Analysis

KW - State of Health

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M3 - Article in proceeding

SN - 978-1-7281-9388-5

T3 - IEEE Energy Conversion Congress and Exposition

BT - 2022 IEEE Energy Conversion Congress and Exposition

PB - IEEE

T2 - 2022 IEEE Energy Conversion Congress and Exposition (ECCE)

Y2 - 9 October 2022 through 13 October 2022

ER -

Aging Mechanisms of Electrodes in LiFePO4/Graphite Batteries

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