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Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries

Solid electrolyte interphase (SEI) formed at the interface in lithium-ion batteries plays an important role in isolating electrons and permeating ions during charging/discharging processes. Therefore, the formation of a good interface is crucial for better battery performance. In this study, additiv...

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Autores principales: Chen, Minjing, Huang, Yunbo, Shi, Zhepu, Luo, Hao, Liu, Zhaoping, Shen, Cai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9144735/
https://www.ncbi.nlm.nih.gov/pubmed/35629689
http://dx.doi.org/10.3390/ma15103662
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author Chen, Minjing
Huang, Yunbo
Shi, Zhepu
Luo, Hao
Liu, Zhaoping
Shen, Cai
author_facet Chen, Minjing
Huang, Yunbo
Shi, Zhepu
Luo, Hao
Liu, Zhaoping
Shen, Cai
author_sort Chen, Minjing
collection PubMed
description Solid electrolyte interphase (SEI) formed at the interface in lithium-ion batteries plays an important role in isolating electrons and permeating ions during charging/discharging processes. Therefore, the formation of a good interface is crucial for better battery performance. In this study, additives based on adiponitrile (ADN) and trimethyl borate (TMB) were employed to broaden the electrochemical window and form a good SEI layer. Electrochemical Atomic force microscopy (EC-AFM) was used for in situ studies of film-formation mechanisms in high-voltage electrolytes on high-temperature pyrolytic graphite (HOPG), as well as Li- and Mn-rich (LMR) materials. X-ray photoelectron spectroscopy (XPS) combined with electrochemical methods revealed a synergistic reaction between the two additives to form a more stable interfacial film during charging/discharging processes to yield assembled batteries with improved cycle performance, its capacity increased from below 100 mAh/g to 200 mAh/g after 50 cycles. In sum, these findings would have great significance for the development of high voltage lithium-ion batteries with enhanced performance.
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spelling pubmed-91447352022-05-29 Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries Chen, Minjing Huang, Yunbo Shi, Zhepu Luo, Hao Liu, Zhaoping Shen, Cai Materials (Basel) Article Solid electrolyte interphase (SEI) formed at the interface in lithium-ion batteries plays an important role in isolating electrons and permeating ions during charging/discharging processes. Therefore, the formation of a good interface is crucial for better battery performance. In this study, additives based on adiponitrile (ADN) and trimethyl borate (TMB) were employed to broaden the electrochemical window and form a good SEI layer. Electrochemical Atomic force microscopy (EC-AFM) was used for in situ studies of film-formation mechanisms in high-voltage electrolytes on high-temperature pyrolytic graphite (HOPG), as well as Li- and Mn-rich (LMR) materials. X-ray photoelectron spectroscopy (XPS) combined with electrochemical methods revealed a synergistic reaction between the two additives to form a more stable interfacial film during charging/discharging processes to yield assembled batteries with improved cycle performance, its capacity increased from below 100 mAh/g to 200 mAh/g after 50 cycles. In sum, these findings would have great significance for the development of high voltage lithium-ion batteries with enhanced performance. MDPI 2022-05-20 /pmc/articles/PMC9144735/ /pubmed/35629689 http://dx.doi.org/10.3390/ma15103662 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Minjing
Huang, Yunbo
Shi, Zhepu
Luo, Hao
Liu, Zhaoping
Shen, Cai
Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries
title Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries
title_full Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries
title_fullStr Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries
title_full_unstemmed Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries
title_short Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries
title_sort effect of high-voltage additives on formation of solid electrolyte interphases in lithium-ion batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9144735/
https://www.ncbi.nlm.nih.gov/pubmed/35629689
http://dx.doi.org/10.3390/ma15103662
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