Corrosion suppression of aluminium current collectors within Li-ion cells using 3-methoxypropionitrile-based electrolytes

Yen, Chih-Han; Neale, Alex R.; Lim, Jungwoo; Bresser, Dominic; Hardwick, Laurence J.; Hu, Chi‐Chang

doi:10.1016/j.electacta.2022.141105

Cited by 6 publications

(1 citation statement)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…37,63,64 The Al–N compounds are generated from the decomposition of Al 3+ –NO 3 − species on the Al surface at relatively high voltage, and such Al–N compounds are considered to protect Al foil. 65 In the case of the electrolyte without NO 3 − , the corroded Al 3+ cannot be tethered on the Al surface and suffers from continuous migration toward the electrolyte, so a tiny amount of Al–N compound can be found in the surface composition. Another worthy observation is the Al metal signal in the XPS measurement.…”

Section: Resultsmentioning

confidence: 99%

Solvating lithium and tethering aluminium using di-coordination-strength anions for low-temperature lithium metal batteries

Chen,

Zhang,

Fan

et al. 2024

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Solvating lithium and tethering aluminium using di-coordination-strength anions for low-temperature lithium metal batteries

Chen,

Zhang,

Fan

et al. 2024

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

Lithium Bis(Trifluoromethanesulfonyl)Imide (LiTFSI): A Prominent Lithium Salt in Lithium‐Ion Battery Electrolytes – Fundamentals, Progress, and Future Perspectives

Li,

Wang,

Huang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) is a widely used lithium (Li) salt that is extensively studied in the field of electrolytes for Li‐ion batteries (LIBs) to improve their performance. A thorough understanding of its underlying mechanisms in LIBs is crucial for gaining deeper insights into its future development. This paper provides an extensive review of the role of LiTFSI in enhancing battery performance, including its benefits for negative electrode protection, the facilitation of fast charging capabilities, and the promotion of battery operation across a wide temperature range. It also highlights the specific drawbacks of LiTFSI in the electrolyte domain and examines potential solutions. By leveraging the unique properties of LiTFSI, the strategies for its effective utilization in current research are outlined. Finally, the paper discusses the lack of research into the mechanism of LiTFSI in interface protection, particularly the evolution mechanisms of multi‐component Li salts at the positive and negative electrode interfaces, and it reasonably anticipates the potential applications of LiTFSI in the realm of non‐liquid batteries. This study not only provides a more comprehensive and profound understanding of LiTFSI but also aids in the exploration of novel electrolyte systems.

show abstract

Solvation Regulation via Hydrogen Bonding to Mitigate Al Current Collector Corrosion for High‐Voltage Li‐Ion Batteries

Zhang,

Dong,

Yue

et al. 2024

Advanced Energy Materials

View full text Add to dashboard Cite

The exceptional thermal stability and conductivity of lithium bis(fluorosulfonyl)imide (LiFSI) have made it a preferred salt for lithium‐ion batteries (LIBs). However, the corrosion of aluminum (Al) current collectors by LiFSI at low potentials (3.8 V vs Li/Li+) poses a persistent challenge, hindering the application of LiFSI in 4 V‐class LIBs. Herein, 2,2,2‐trifluoroethyl methanesulfonate (TFMS) is proposed as a versatile co‐solvent to address the issue of Al current collector corrosion. It is demonstrated that incorporating TFMS into a conventional LiFSI‐based carbonate electrolyte can precisely tailor the Li+ solvation structure by hydrogen bonding interactions with dimethyl carbonate (DMC) solvent. This weakens the coordination between DMC and Li+ while increasing the participation of FSI− anions in the primary solvation shell, effectively suppressing the Al current collector caused by free FSI− anions attacking. Furthermore, TFMS and FSI− synergically induce the formation of an inorganic‐rich and compact cathode electrolyte interphase, significantly avoiding undesired side reactions. As a result, the TFMS‐electrolyte enables 1.2 Ah‐graphite||NCM811 (LiNi0.8Co0.1Mn0.1O2) pouch‐cells to achieve 89.9% capacity retention with high average Coulombic efficiency of >99.9% for 200 cycles at a cut‐off voltage of 4.4 V, opening up opportunities for the development of advanced high‐voltage LIBs.

show abstract

Corrosion suppression of aluminium current collectors within Li-ion cells using 3-methoxypropionitrile-based electrolytes

Cited by 6 publications

References 43 publications

Solvating lithium and tethering aluminium using di-coordination-strength anions for low-temperature lithium metal batteries

Solvating lithium and tethering aluminium using di-coordination-strength anions for low-temperature lithium metal batteries

Lithium Bis(Trifluoromethanesulfonyl)Imide (LiTFSI): A Prominent Lithium Salt in Lithium‐Ion Battery Electrolytes – Fundamentals, Progress, and Future Perspectives

Solvation Regulation via Hydrogen Bonding to Mitigate Al Current Collector Corrosion for High‐Voltage Li‐Ion Batteries

Contact Info

Product

Resources

About