High-temperature solid electrolyte interphases (SEI) in graphite electrodes

Rodrigues, Marco‐Tulio F.; Sayed, Farheen N.; Gullapalli, Hemtej; Ajayan, Pulickel M.

doi:10.1016/j.jpowsour.2018.01.070

Cited by 56 publications

(28 citation statements)

References 27 publications

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“…Here, ethyl methyl carbonate and dimethyl carbonate are usually considered [219]. In addition, ionic liquids as substituents of conventional solvents can form thicker SEIs with highcapacity retentions at 90 °C [226].…”

Section: Solventmentioning

confidence: 99%

Degradation Mechanisms and Mitigation Strategies of Nickel-Rich NMC-Based Lithium-Ion Batteries

Yuan

Zhang

et al. 2019

Electrochem. Energ. Rev.

497

383

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The demand for lithium-ion batteries (LIBs) with high mass-specific capacities, high rate capabilities and long-term cyclabilities is driving the research and development of LIBs with nickel-rich NMC (LiNi x Mn y Co 1−x−y O 2 , x ⩾ 0.5 ) cathodes and graphite (Li x C 6 ) anodes. Based on this, this review will summarize recently reported and widely recognized studies of the degradation mechanisms of Ni-rich NMC cathodes and graphite anodes. And with a broad collection of proposed mechanisms on both atomic and micrometer scales, this review can supplement previous degradation studies of Ni-rich NMC batteries. In addition, this review will categorize advanced mitigation strategies for both electrodes based on different modifications in which Ni-rich NMC cathode improvement strategies involve dopants, gradient layers, surface coatings, carbon matrixes and advanced synthesis methods, whereas graphite anode improvement strategies involve surface coatings, charge/discharge protocols and electrolyte volume estimations. Electrolyte components that can facilitate the stabilization of anodic solid electrolyte interfaces are also reviewed, and trade-offs between modification techniques as well as controversies are discussed for a deeper understanding of the mitigation strategies of Ni-rich NMC/graphite LIBs. Furthermore, this review will present various physical and electrochemical diagnostic tools that are vital in the elucidation of degradation mechanisms during operation to supplement future degradation studies. Finally, this review will summarize current research focuses and propose future research directions.

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Section: Solventmentioning

confidence: 99%

Degradation Mechanisms and Mitigation Strategies of Nickel-Rich NMC-Based Lithium-Ion Batteries

Yuan

Zhang

et al. 2019

Electrochem. Energ. Rev.

497

383

View full text Add to dashboard Cite

show abstract

“…The thermal stability of electrolytes is also related to the stability of the SEI, and the formation of a high-stability SEI at elevated temperatures was demonstrated in Li-containing ILs. 160 These factors must be taken into account in future studies on the application of IL electrolytes for Na secondary batteries. 156 Fig.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…Thus, for the development of negative electrodes, exploring compatible electrolytes is indispensable. The performance and safety of a battery are highly dependent on SEI layer properties 399 which are sensitive to parameters such as the salt concentration of the electrolyte, 400 temperature, 160,401 and the binder used. 402 Investigating the physical and chemical properties of SEI layers is very important for understanding the degradation mechanisms in batteries.…”

Section: Solid Electrolyte Interphase Layermentioning

confidence: 99%

Advances in sodium secondary batteries utilizing ionic liquid electrolytes

Matsumoto

Hwang

Kaushik

et al. 2019

Energy Environ. Sci.

151

138

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“…It is worth noting that, to the best of our knowledge, the possible effects of temperature on anion graphite intercalation and blister growth have never been considered. Some studies regarding electrodes in the cathodic regime [3], Li-batteries applications [12], Li diffusion rate in graphite [13] and intercalation [14], aging of electrodes [15], and the role of organic solvents [16] have been performed (refer to the review reported in [17] for a brief history on thermoelectrochemistry), but the role of temperature within the Hathcock model is still missing. In this work, we apply an in-situ atomic force microscopy (AFM) apparatus to explore the highly oriented pyrolite graphite (HOPG) morphology after the application of an increasing EC potential (CV) when immersed inside a hot (namely, 343 K) acid electrolyte.…”

Section: Condens Matter 2019 4 For Peer Reviewmentioning

confidence: 99%

Temperature Effects on the HOPG Intercalation Process

et al. 2019

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Graphite intercalation via chemical strategies is a common procedure to delaminate stratified crystals and obtain a suspension of graphene flakes. The intercalation mechanism at the molecular level is still under investigation in view of enhancing graphene production and reducing damage to the original pristine crystal. The latter, in particular, can undergo surface detriment due to both blister evolution and carbon dissolution. The role of the electrolyte temperature in this process has never been investigated. Here, by using an in-situ atomic force microscopy (AFM) apparatus, we explore surface morphology changes after the application of fast cyclic-voltammetries at 343 K, in view of de-coupling the crystal swelling phenomenon from the other electrochemical processes. We find that blisters do not evolve as a consequence of the increasing temperature, while the quality of the graphite surface becomes significantly worse, due to the formation of some adsorbates on possible defect sites of the electrode surface. Our results suggest that the chemical baths used in graphite delamination must be carefully monitored in temperature for avoiding undesired electrode detriment.

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High-temperature solid electrolyte interphases (SEI) in graphite electrodes

Cited by 56 publications

References 27 publications

Degradation Mechanisms and Mitigation Strategies of Nickel-Rich NMC-Based Lithium-Ion Batteries

Degradation Mechanisms and Mitigation Strategies of Nickel-Rich NMC-Based Lithium-Ion Batteries

Advances in sodium secondary batteries utilizing ionic liquid electrolytes

Temperature Effects on the HOPG Intercalation Process

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