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First-Principles Study on the Interplay of Strain and State-of-Charge with Li-Ion Diffusion in the Battery Cathode Material LiCoO(2)

[Image: see text] Cathode degradation of Li-ion batteries (Li(+)) continues to be a crucial issue for higher energy density. A main cause of this degradation is strain due to stress induced by structural changes according to the state-of-charge (SOC). Moreover, in solid-state batteries, a mismatch b...

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Autores principales: Zhou, Zizhen, Cazorla, Claudio, Gao, Bo, Luong, Huu Duc, Momma, Toshiyuki, Tateyama, Yoshitaka
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10685353/
https://www.ncbi.nlm.nih.gov/pubmed/37944111
http://dx.doi.org/10.1021/acsami.3c14444
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author Zhou, Zizhen
Cazorla, Claudio
Gao, Bo
Luong, Huu Duc
Momma, Toshiyuki
Tateyama, Yoshitaka
author_facet Zhou, Zizhen
Cazorla, Claudio
Gao, Bo
Luong, Huu Duc
Momma, Toshiyuki
Tateyama, Yoshitaka
author_sort Zhou, Zizhen
collection PubMed
description [Image: see text] Cathode degradation of Li-ion batteries (Li(+)) continues to be a crucial issue for higher energy density. A main cause of this degradation is strain due to stress induced by structural changes according to the state-of-charge (SOC). Moreover, in solid-state batteries, a mismatch between incompatible cathode/electrolyte interfaces also generates a strain effect. In this respect, understanding the effects of the mechanical/elastic phenomena associated with SOC on the cathode performance, such as voltage and Li(+) diffusion, is essential. In this work, we focused on LiCoO(2) (LCO), a representative LIB cathode material, and investigated the effects of biaxial strain and hydrostatic pressure on its layered structure and Li(+) transport properties through first-principles calculations. With the nudged elastic band technique and molecular dynamics, we demonstrated that in Li-deficient LCO, compressive biaxial strain increases the Li(+) diffusivity, whereas tensile biaxial strain and hydrostatic pressure tend to suppress it. Structural parameter analysis revealed the key correlation of “Co layer distances” with Li(+) diffusion instead of “Li layer distances”, as ordinarily expected. Structural analysis further revealed the interplay between the Li–Li Coulomb interaction, SOC, and Li(+) diffusion in LCO. The activation volume of LCO under hydrostatic pressure was reported for the first time. Moreover, vacancy formation energy calculations showed that the Li intercalation potential could be decreased under compressive biaxial strain due to the weakening of the Li–O bond interaction. The present findings may serve to improve the control of the energy density performance of layered cathode materials.
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spelling pubmed-106853532023-11-30 First-Principles Study on the Interplay of Strain and State-of-Charge with Li-Ion Diffusion in the Battery Cathode Material LiCoO(2) Zhou, Zizhen Cazorla, Claudio Gao, Bo Luong, Huu Duc Momma, Toshiyuki Tateyama, Yoshitaka ACS Appl Mater Interfaces [Image: see text] Cathode degradation of Li-ion batteries (Li(+)) continues to be a crucial issue for higher energy density. A main cause of this degradation is strain due to stress induced by structural changes according to the state-of-charge (SOC). Moreover, in solid-state batteries, a mismatch between incompatible cathode/electrolyte interfaces also generates a strain effect. In this respect, understanding the effects of the mechanical/elastic phenomena associated with SOC on the cathode performance, such as voltage and Li(+) diffusion, is essential. In this work, we focused on LiCoO(2) (LCO), a representative LIB cathode material, and investigated the effects of biaxial strain and hydrostatic pressure on its layered structure and Li(+) transport properties through first-principles calculations. With the nudged elastic band technique and molecular dynamics, we demonstrated that in Li-deficient LCO, compressive biaxial strain increases the Li(+) diffusivity, whereas tensile biaxial strain and hydrostatic pressure tend to suppress it. Structural parameter analysis revealed the key correlation of “Co layer distances” with Li(+) diffusion instead of “Li layer distances”, as ordinarily expected. Structural analysis further revealed the interplay between the Li–Li Coulomb interaction, SOC, and Li(+) diffusion in LCO. The activation volume of LCO under hydrostatic pressure was reported for the first time. Moreover, vacancy formation energy calculations showed that the Li intercalation potential could be decreased under compressive biaxial strain due to the weakening of the Li–O bond interaction. The present findings may serve to improve the control of the energy density performance of layered cathode materials. American Chemical Society 2023-11-09 /pmc/articles/PMC10685353/ /pubmed/37944111 http://dx.doi.org/10.1021/acsami.3c14444 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Zhou, Zizhen
Cazorla, Claudio
Gao, Bo
Luong, Huu Duc
Momma, Toshiyuki
Tateyama, Yoshitaka
First-Principles Study on the Interplay of Strain and State-of-Charge with Li-Ion Diffusion in the Battery Cathode Material LiCoO(2)
title First-Principles Study on the Interplay of Strain and State-of-Charge with Li-Ion Diffusion in the Battery Cathode Material LiCoO(2)
title_full First-Principles Study on the Interplay of Strain and State-of-Charge with Li-Ion Diffusion in the Battery Cathode Material LiCoO(2)
title_fullStr First-Principles Study on the Interplay of Strain and State-of-Charge with Li-Ion Diffusion in the Battery Cathode Material LiCoO(2)
title_full_unstemmed First-Principles Study on the Interplay of Strain and State-of-Charge with Li-Ion Diffusion in the Battery Cathode Material LiCoO(2)
title_short First-Principles Study on the Interplay of Strain and State-of-Charge with Li-Ion Diffusion in the Battery Cathode Material LiCoO(2)
title_sort first-principles study on the interplay of strain and state-of-charge with li-ion diffusion in the battery cathode material licoo(2)
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10685353/
https://www.ncbi.nlm.nih.gov/pubmed/37944111
http://dx.doi.org/10.1021/acsami.3c14444
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