Oxygen Vacancy Diffusion and Condensation in Lithium-Ion Battery Cathode Materials

Sanghan Lee; Wooyoung Jin; Su Hwan Kim; Se Hun Joo; Gyutae Nam; Pilgun Oh; Young Ki Kim; Sang Kyu Kwak; Jaephil Cho

doi:10.1002/anie.201904469

Oxygen Vacancy Diffusion and Condensation in Lithium-Ion Battery Cathode Materials

Sanghan Lee
, Wooyoung Jin
, Su Hwan Kim
, Se Hun Joo
, Gyutae Nam
, Pilgun Oh
, Young Ki Kim
, Sang Kyu Kwak^*
, Jaephil Cho

^*Corresponding author for this work

Research output: Contribution to journal › Review article › peer-review

171 Citations (Scopus)

Abstract

Oxygen vacancies (OV) are native defects in transition metal (TM) oxides and their presence has a critical effect on the physicochemical properties of the oxide. Metal oxides are commonly used in lithium-ion battery (LIB) cathodes and there is still a lack of understanding of the role of OVs in LIB research field. Here, we report on the behavior of OVs in a single-crystal LIB cathode during the non-equilibrium states of charge and discharge. We found that microcrack evolution in a single crystal occurs due to OV condensation in specific crystallographic orientations generated by the continuous migration of OVs and TM ions. Moreover, understanding the effects of the presence and diffusion of OVs in metal oxides enables the elucidation of most of the conventional mechanisms of capacity fading in LIBs and provides new insights for new electrochemical applications.

Original language	English
Pages (from-to)	10478-10485
Number of pages	8
Journal	Angewandte Chemie - International Edition
Volume	58
Issue number	31
DOIs	https://doi.org/10.1002/anie.201904469
Publication status	Published - 2019 Jul 29
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

capacity fading
lattice mismatch
lithium-ion batteries
microcrack
oxygen vacancies diffusion

ASJC Scopus subject areas

Catalysis
General Chemistry

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10.1002/anie.201904469

Cite this

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title = "Oxygen Vacancy Diffusion and Condensation in Lithium-Ion Battery Cathode Materials",

abstract = "Oxygen vacancies (OV) are native defects in transition metal (TM) oxides and their presence has a critical effect on the physicochemical properties of the oxide. Metal oxides are commonly used in lithium-ion battery (LIB) cathodes and there is still a lack of understanding of the role of OVs in LIB research field. Here, we report on the behavior of OVs in a single-crystal LIB cathode during the non-equilibrium states of charge and discharge. We found that microcrack evolution in a single crystal occurs due to OV condensation in specific crystallographic orientations generated by the continuous migration of OVs and TM ions. Moreover, understanding the effects of the presence and diffusion of OVs in metal oxides enables the elucidation of most of the conventional mechanisms of capacity fading in LIBs and provides new insights for new electrochemical applications.",

keywords = "capacity fading, lattice mismatch, lithium-ion batteries, microcrack, oxygen vacancies diffusion",

author = "Sanghan Lee and Wooyoung Jin and Kim, \{Su Hwan\} and Joo, \{Se Hun\} and Gyutae Nam and Pilgun Oh and Kim, \{Young Ki\} and Kwak, \{Sang Kyu\} and Jaephil Cho",

note = "Publisher Copyright: {\textcopyright} 2019 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2019",

month = jul,

day = "29",

doi = "10.1002/anie.201904469",

language = "English",

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journal = "Angewandte Chemie - International Edition",

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TY - JOUR

T1 - Oxygen Vacancy Diffusion and Condensation in Lithium-Ion Battery Cathode Materials

AU - Lee, Sanghan

AU - Jin, Wooyoung

AU - Kim, Su Hwan

AU - Joo, Se Hun

AU - Nam, Gyutae

AU - Oh, Pilgun

AU - Kim, Young Ki

AU - Kwak, Sang Kyu

AU - Cho, Jaephil

PY - 2019/7/29

Y1 - 2019/7/29

N2 - Oxygen vacancies (OV) are native defects in transition metal (TM) oxides and their presence has a critical effect on the physicochemical properties of the oxide. Metal oxides are commonly used in lithium-ion battery (LIB) cathodes and there is still a lack of understanding of the role of OVs in LIB research field. Here, we report on the behavior of OVs in a single-crystal LIB cathode during the non-equilibrium states of charge and discharge. We found that microcrack evolution in a single crystal occurs due to OV condensation in specific crystallographic orientations generated by the continuous migration of OVs and TM ions. Moreover, understanding the effects of the presence and diffusion of OVs in metal oxides enables the elucidation of most of the conventional mechanisms of capacity fading in LIBs and provides new insights for new electrochemical applications.

AB - Oxygen vacancies (OV) are native defects in transition metal (TM) oxides and their presence has a critical effect on the physicochemical properties of the oxide. Metal oxides are commonly used in lithium-ion battery (LIB) cathodes and there is still a lack of understanding of the role of OVs in LIB research field. Here, we report on the behavior of OVs in a single-crystal LIB cathode during the non-equilibrium states of charge and discharge. We found that microcrack evolution in a single crystal occurs due to OV condensation in specific crystallographic orientations generated by the continuous migration of OVs and TM ions. Moreover, understanding the effects of the presence and diffusion of OVs in metal oxides enables the elucidation of most of the conventional mechanisms of capacity fading in LIBs and provides new insights for new electrochemical applications.

KW - capacity fading

KW - lattice mismatch

KW - lithium-ion batteries

KW - microcrack

KW - oxygen vacancies diffusion

UR - https://www.scopus.com/pages/publications/85068111249

U2 - 10.1002/anie.201904469

DO - 10.1002/anie.201904469

M3 - Review article

C2 - 31119837

AN - SCOPUS:85068111249

SN - 1433-7851

VL - 58

SP - 10478

EP - 10485

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 31

ER -

Oxygen Vacancy Diffusion and Condensation in Lithium-Ion Battery Cathode Materials

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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