2017
DOI: 10.1149/2.0111707jes
|View full text |Cite
|
Sign up to set email alerts
|

Influence of Vinylene Carbonate Additive on the Li4Ti5O12Electrode/Electrolyte Interface for Lithium-Ion Batteries

Abstract: The effect of Vinylene Carbonate (VC) additive upon the properties of the Solid Electrolyte Interphase (SEI) formed on top of Li 4 Ti 5 O 12 (LTO) electrodes at 60 • C, in relation with electrochemical data has been studied. Half cells LTO/Li were cycled at 60 • C with VC-free and VC-containing electrolytes over 30 cycles and electrodes were analyzed by XPS after the first and tenth cycles. Scanning Auger Microscopy (SAM) analysis have also been performed after the first lithiation. XPS results show that for b… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

1
22
0

Year Published

2017
2017
2021
2021

Publication Types

Select...
8

Relationship

1
7

Authors

Journals

citations
Cited by 24 publications
(23 citation statements)
references
References 27 publications
1
22
0
Order By: Relevance
“…21 Note that the C atom of K 2 CO 3 was thus observed at the same binding energy of typical RCO 2 Li compounds 23,24 , which clearly highlights the need of K-based reference compounds to enable reliable XPS analysis of the SEI in KIBs. 13,23,24 . Therefore, the K compound leads to lower binding energy (-0.5 eV on average) compared to the Li one, highlighting the effect of the lower ionization potential of K. Note that additional peaks (marked by an * in Figure 6) were observed at 288.0 ±0.1 eV and 531.1 ±0.1 eV (this latter is based on XPS quantification), attributed to a -CO 2 K compound impurities such as K 2 C 2 O 4 or RCO 2 K. The peak at 529.4 ±0.1 eV is attributed to KOH impurities.…”
Section: Resultsmentioning
confidence: 83%
“…21 Note that the C atom of K 2 CO 3 was thus observed at the same binding energy of typical RCO 2 Li compounds 23,24 , which clearly highlights the need of K-based reference compounds to enable reliable XPS analysis of the SEI in KIBs. 13,23,24 . Therefore, the K compound leads to lower binding energy (-0.5 eV on average) compared to the Li one, highlighting the effect of the lower ionization potential of K. Note that additional peaks (marked by an * in Figure 6) were observed at 288.0 ±0.1 eV and 531.1 ±0.1 eV (this latter is based on XPS quantification), attributed to a -CO 2 K compound impurities such as K 2 C 2 O 4 or RCO 2 K. The peak at 529.4 ±0.1 eV is attributed to KOH impurities.…”
Section: Resultsmentioning
confidence: 83%
“…The decomposition of VC instigates the formation of a passive nanolayer that creates a barrier between the negative electrode and electrolyte and improves the interfacial stability. 8,15 In our group, we introduced a Schiff base as an additive in the LiFePO 4 / Li 4 Ti 5 O 12 batteries; 1,8-diazabicyclo [5.4.0]undec-7-ene (DBU) initiates the ring-opening polymerization of propylene carbonate to form a layer of ionic conductive polymer on the LTO surface. Furthermore, we reported the effective implementation in cylindrical cells.…”
Section: Introductionmentioning
confidence: 99%
“…Additionally, experimental efforts could be complemented by computational studies that can give more information about SEI formation, growth, properties, functionalities which can rationalize electrolyte and artificial SEI design. [21,28] This increase in activation energy might explain why LTO despite displaying extremely low volume change at lower cut-off potential still suffers some poor rate-capability and high the polarization as compared to the graphite electrode, especially for high C-rates, when using conventional electrolyte solutions based on EC + DEC [13,16,[53][54][55] and even with additives such as FEC [44] and Vinylene carbonate (VC) [18,56] since the desolvation process always depends on the last solvent molecule. [43] The Li desolvation process is independent of the physical thickness of the SEI film but rather the chemical composition of both SEI film and electrolyte solution.…”
Section: Resultsmentioning
confidence: 99%