Impedance investigation of the high temperature performance of the solid-electrolyte-interface of a wide temperature electrolyte

Qu, Huainan; Zhang, Xiaoxiao; Ji, Wei-xiao; Zheng, Dong; Qu, Deyang

doi:10.1016/j.jcis.2021.11.033

Cited by 10 publications

(6 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure a, the interfacial impedance showed a maximum in the voltage region between 0.8 and 0.3 V vs Li/Li + in the first lithiation and decreased in the second lithiation, indicating that SEI completely formed in the first cycle. Qu et al compared the impedance and DRT evolutions between two cells by using baseline electrolyte (1.0 M LiPF 6 in EC/EMC 3/7) and improved electrolyte (1.0 M LiPF 6 in EC/EMC/DMC 5/30/65 with 1% VC and 0.5% LiBOB) during 100 cycles at 60 °C . The cell with improved electrolyte shows a much smaller impedance rise and better cycling performance.…”

Section: Application Of Eis To Lib’s Aging Studymentioning

confidence: 99%

“…Qu et al compared the impedance and DRT evolutions between two cells by using baseline electrolyte (1.0 M LiPF 6 in EC/EMC 3/ 7) and improved electrolyte (1.0 M LiPF 6 in EC/EMC/DMC 5/30/65 with 1% VC and 0.5% LiBOB) during 100 cycles at 60 °C. 161 The cell with improved electrolyte shows a much smaller impedance rise and better cycling performance. The results are ascribed to a dense SEI layer, determined by comparing the CPE values of the initial EIS after formation cycle since low capacitance indicates low surface area and porosity.…”

Section: Platingmentioning

confidence: 99%

See 1 more Smart Citation

Application of Electrochemical Impedance Spectroscopy to Degradation and Aging Research of Lithium-Ion Batteries

Peng

Wei³

et al. 2023

J. Phys. Chem. C

View full text Add to dashboard Cite

An in-depth understanding of battery degradation and aging in-Operando not only plays a vital role in the design of battery managing systems but also helps to ensure safe use and manufacturing optimization of lithium-ion batteries (LIBs) in large-scale applications. Electrochemical impedance spectroscopy (EIS) is a nondestructive method which unravels electrode kinetic processes inside the batteries in different time domains, including charge-transfer reactions, interfacial evolutions, and mass diffusions. It has become a powerful diagnosis and pre/prognosis tool in battery aging research, as it provides important insight into the changes of internal electrochemical processes by correlating the impedance evolution to degradation mechanisms. This review gives a critical overview on rapidly developing impedance techniques for degradation and aging investigation of Li-ion batteries. The EIS variations of LIBs at different aging conditions of calendar aging and accelerated aging are systematically summarized. In addition, the working principles, data validation, and modeling methods, including equivalent circuit model (ECM), distribution of relaxation times (DRT), and transmission line model (TLM), of classical EIS and dynamic EIS are elaborately concluded. Finally, the challenges and perspectives of further application of EIS in the aging research of LIBs are presented.

show abstract

Section: Application Of Eis To Lib’s Aging Studymentioning

confidence: 99%

Section: Platingmentioning

confidence: 99%

Application of Electrochemical Impedance Spectroscopy to Degradation and Aging Research of Lithium-Ion Batteries

Peng

Wei³

et al. 2023

J. Phys. Chem. C

View full text Add to dashboard Cite

show abstract

“…Ionic properties of the nanolayer SEI are often evaluated by electrochemical impedance spectroscopy (EIS), as the charge-transfer resistance of Li ions across the SEI can be quantitatively determined with this technique. EIS has been widely used to investigate the evolution of the internal resistance as this technique enables deconvoluting the contribution of the SEI as a function of a number of parameters, e.g., number of cycles, electrolyte additive, temperature, etc. − However, the evaluation of the electric properties of the nanolayer SEI is not so straightforward. An indirect way of doing this is to analyze the Coulombic efficiency.…”

Section: Introductionmentioning

confidence: 99%

New Technique for Probing the Protecting Character of the Solid Electrolyte Interphase as a Critical but Elusive Property for Pursuing Long Cycle Life Lithium-Ion Batteries

García-Quismondo

Alvarez-Conde

García

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The formation of a protecting nanolayer, so-called solid electrolyte interphase (SEI), on the negative electrode of Li-ion batteries (LIBs) from product precipitation of the cathodic decomposition of the electrolyte is a blessing since the electrically insulating nature of this nanolayer protects the electrode surface, preventing continuous electrolyte decomposition and enabling the large nominal cell voltage of LIBs, e.g., 3.3–3.8 V. Thus, the protection performance of the nanolayer SEI is essential for LIBs to achieve a long cycle life. Unfortunately, the evaluation of this critical property of the SEI is not trivial. Herein, a new, cheap, and easily implementable methodology, the redox-mediated enhanced coulometry, is presented to estimate the protecting quality of the SEI. The key element of the methodology is the addition of a redox mediator in the electrolyte during the degassing step (after the SEI formation cycle). The redox mediator leads to an internal self-discharge process that is inversely proportional to the protecting character of the SEI. Also, the self-discharge process results in an easily measurable decrease in Coulombic efficiency. The influence of vinylene carbonate as an electrolyte additive in the resulting SEI is used as a case study to showcase the potential of the proposed methodology.

show abstract

“…If coupled with the implementation of a reference probe, the kinetics of a cathode and an anode can be investigated in detail. Figure 8 shows the result of an impedance study of a LIB with a wide temperature electrolyte in comparison with a control electrolyte 26 . A Li reference electrode was implemented in a faceto-face single layer pouch cell.…”

Section: Distribution Of Relaxation Times (Drt) Analysismentioning

confidence: 99%

Probing process kinetics in batteries with electrochemical impedance spectroscopy

2022

Commun Mater

Self Cite

View full text Add to dashboard Cite

Electrochemical impedance spectroscopy provides information on the steady state of an electrochemical redox reaction and its kinetics. For instance, impedance is a very useful technique to investigate kinetics in batteries, such as diffusion processes or charge-transfer reaction dynamics during battery operation. Here, we summarize procedures for conducting reliable impedance measurements on a battery system, including cell configurations, readiness of a system for impedance testing, validation of the data in an impedance spectrum, deconvolution of electrochemical processes based on the distribution of relaxation time and equivalent circuit fitting of the impedance spectrum. The aim of this paper is to discuss key parameters for accurate and repeatable impedance measurements of batteries.

show abstract

Impedance investigation of the high temperature performance of the solid-electrolyte-interface of a wide temperature electrolyte

Cited by 10 publications

References 36 publications

Application of Electrochemical Impedance Spectroscopy to Degradation and Aging Research of Lithium-Ion Batteries

Application of Electrochemical Impedance Spectroscopy to Degradation and Aging Research of Lithium-Ion Batteries

New Technique for Probing the Protecting Character of the Solid Electrolyte Interphase as a Critical but Elusive Property for Pursuing Long Cycle Life Lithium-Ion Batteries

Probing process kinetics in batteries with electrochemical impedance spectroscopy

Contact Info

Product

Resources

About