Cargando…
Understanding Degradation at the Lithium-Ion Battery Cathode/Electrolyte Interface: Connecting Transition-Metal Dissolution Mechanisms to Electrolyte Composition
[Image: see text] Lithium transition-metal oxides (LiMn(2)O(4) and LiMO(2) where M = Ni, Mn, Co, etc.) are widely applied as cathode materials in lithium-ion batteries due to their considerable capacity and energy density. However, multiple processes occurring at the cathode/electrolyte interface le...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2021
|
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156081/ https://www.ncbi.nlm.nih.gov/pubmed/33660970 http://dx.doi.org/10.1021/acsami.0c22235 |
_version_ | 1785036466097750016 |
---|---|
author | Huang, Di Engtrakul, Chaiwat Nanayakkara, Sanjini Mulder, David W. Han, Sang-Don Zhou, Meng Luo, Hongmei Tenent, Robert C. |
author_facet | Huang, Di Engtrakul, Chaiwat Nanayakkara, Sanjini Mulder, David W. Han, Sang-Don Zhou, Meng Luo, Hongmei Tenent, Robert C. |
author_sort | Huang, Di |
collection | PubMed |
description | [Image: see text] Lithium transition-metal oxides (LiMn(2)O(4) and LiMO(2) where M = Ni, Mn, Co, etc.) are widely applied as cathode materials in lithium-ion batteries due to their considerable capacity and energy density. However, multiple processes occurring at the cathode/electrolyte interface lead to overall performance degradation. One key failure mechanism is the dissolution of transition metals from the cathode. This work presents results combining scanning electrochemical microscopy with inductively coupled plasma (ICP) and electron paramagnetic resonance (EPR) spectroscopies to examine cathode degradation products. Our effort employs a LiMn(2)O(4) (LMO) thin film as a model cathode to monitor the Mn dissolution process without the potential complications of conductive additive and polymer binders. We characterize the electrochemical behavior of LMO degradation products in various electrolytes, paired with ICP and EPR, to better understand the properties of Mn complexes formed following metal dissolution. We find that the identity of the lithium salt anions in our electrolyte systems [ClO(4)(–), PF(6)(–), and (CF(3)SO(2))(2)N(–)] appears to affect the Mn dissolution process significantly as well as the electrochemical behavior of the generated Mn complexes. This implies that the mechanism for Mn dissolution is at least partially dependent on the lithium salt anion. |
format | Online Article Text |
id | pubmed-10156081 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-101560812023-05-04 Understanding Degradation at the Lithium-Ion Battery Cathode/Electrolyte Interface: Connecting Transition-Metal Dissolution Mechanisms to Electrolyte Composition Huang, Di Engtrakul, Chaiwat Nanayakkara, Sanjini Mulder, David W. Han, Sang-Don Zhou, Meng Luo, Hongmei Tenent, Robert C. ACS Appl Mater Interfaces [Image: see text] Lithium transition-metal oxides (LiMn(2)O(4) and LiMO(2) where M = Ni, Mn, Co, etc.) are widely applied as cathode materials in lithium-ion batteries due to their considerable capacity and energy density. However, multiple processes occurring at the cathode/electrolyte interface lead to overall performance degradation. One key failure mechanism is the dissolution of transition metals from the cathode. This work presents results combining scanning electrochemical microscopy with inductively coupled plasma (ICP) and electron paramagnetic resonance (EPR) spectroscopies to examine cathode degradation products. Our effort employs a LiMn(2)O(4) (LMO) thin film as a model cathode to monitor the Mn dissolution process without the potential complications of conductive additive and polymer binders. We characterize the electrochemical behavior of LMO degradation products in various electrolytes, paired with ICP and EPR, to better understand the properties of Mn complexes formed following metal dissolution. We find that the identity of the lithium salt anions in our electrolyte systems [ClO(4)(–), PF(6)(–), and (CF(3)SO(2))(2)N(–)] appears to affect the Mn dissolution process significantly as well as the electrochemical behavior of the generated Mn complexes. This implies that the mechanism for Mn dissolution is at least partially dependent on the lithium salt anion. American Chemical Society 2021-03-04 /pmc/articles/PMC10156081/ /pubmed/33660970 http://dx.doi.org/10.1021/acsami.0c22235 Text en © 2021 American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Huang, Di Engtrakul, Chaiwat Nanayakkara, Sanjini Mulder, David W. Han, Sang-Don Zhou, Meng Luo, Hongmei Tenent, Robert C. Understanding Degradation at the Lithium-Ion Battery Cathode/Electrolyte Interface: Connecting Transition-Metal Dissolution Mechanisms to Electrolyte Composition |
title | Understanding Degradation at
the Lithium-Ion Battery
Cathode/Electrolyte Interface: Connecting Transition-Metal Dissolution
Mechanisms to Electrolyte Composition |
title_full | Understanding Degradation at
the Lithium-Ion Battery
Cathode/Electrolyte Interface: Connecting Transition-Metal Dissolution
Mechanisms to Electrolyte Composition |
title_fullStr | Understanding Degradation at
the Lithium-Ion Battery
Cathode/Electrolyte Interface: Connecting Transition-Metal Dissolution
Mechanisms to Electrolyte Composition |
title_full_unstemmed | Understanding Degradation at
the Lithium-Ion Battery
Cathode/Electrolyte Interface: Connecting Transition-Metal Dissolution
Mechanisms to Electrolyte Composition |
title_short | Understanding Degradation at
the Lithium-Ion Battery
Cathode/Electrolyte Interface: Connecting Transition-Metal Dissolution
Mechanisms to Electrolyte Composition |
title_sort | understanding degradation at
the lithium-ion battery
cathode/electrolyte interface: connecting transition-metal dissolution
mechanisms to electrolyte composition |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156081/ https://www.ncbi.nlm.nih.gov/pubmed/33660970 http://dx.doi.org/10.1021/acsami.0c22235 |
work_keys_str_mv | AT huangdi understandingdegradationatthelithiumionbatterycathodeelectrolyteinterfaceconnectingtransitionmetaldissolutionmechanismstoelectrolytecomposition AT engtrakulchaiwat understandingdegradationatthelithiumionbatterycathodeelectrolyteinterfaceconnectingtransitionmetaldissolutionmechanismstoelectrolytecomposition AT nanayakkarasanjini understandingdegradationatthelithiumionbatterycathodeelectrolyteinterfaceconnectingtransitionmetaldissolutionmechanismstoelectrolytecomposition AT mulderdavidw understandingdegradationatthelithiumionbatterycathodeelectrolyteinterfaceconnectingtransitionmetaldissolutionmechanismstoelectrolytecomposition AT hansangdon understandingdegradationatthelithiumionbatterycathodeelectrolyteinterfaceconnectingtransitionmetaldissolutionmechanismstoelectrolytecomposition AT zhoumeng understandingdegradationatthelithiumionbatterycathodeelectrolyteinterfaceconnectingtransitionmetaldissolutionmechanismstoelectrolytecomposition AT luohongmei understandingdegradationatthelithiumionbatterycathodeelectrolyteinterfaceconnectingtransitionmetaldissolutionmechanismstoelectrolytecomposition AT tenentrobertc understandingdegradationatthelithiumionbatterycathodeelectrolyteinterfaceconnectingtransitionmetaldissolutionmechanismstoelectrolytecomposition |