Effect of the concentration of diphenyloctyl phosphate as a flame-retarding additive on the electrochemical performance of lithium-ion batteries

Shim, Eun-Gi; Nam, Tae-Heum; Kim, Jung-Gu; Kim, Hyunsoo; Moon, Seong‐In

doi:10.1016/j.electacta.2008.10.037

Cited by 48 publications

(22 citation statements)

References 37 publications

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“…Among the HFE family, Arai [67] have investigated MFE. The use of branched HFEs with higher fluorine content, for example, TMMP and TPTP, proposed by Naoi et al [66] and Shim et al [60], respectively, allowed to reduce the amount (50%) of additive. The use of branched HFEs with higher fluorine content, for example, TMMP and TPTP, proposed by Naoi et al [66] and Shim et al [60], respectively, allowed to reduce the amount (50%) of additive.…”

Section: Hydrofluoroethersmentioning

confidence: 99%

Electrolytes for rechargeable lithium batteries

Montanino

Passerini

Appetecchi

2015

Rechargeable Lithium Batteries

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Section: Hydrofluoroethersmentioning

confidence: 99%

Electrolytes for rechargeable lithium batteries

Montanino

Passerini

Appetecchi

2015

Rechargeable Lithium Batteries

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“…The electrolyte compositions used in this study comprise 1 M LiPF 6 , ethylene carbonate:dimethyl carbonate:diethyl carbonate (EC : DMC : DEC) basic solution with two practically important additives with different chemical nature and functions: vinylene carbonate (VC) and diphenyl octyl‐phosphate (DPOP). VC is a widely implemented polymerizable additive, having a strong industrial impact and DPOP is a bi‐functional fire‐retarding agent with the potential to simultaneously improve SEI formation and to reduce electrolyte flammability . The obtained EQCM results allow us to interpret for the first time the in‐situ growth, stability and mechanical properties of SEI formed in the presence of DPOP and to offer a direct comparison with the additive‐free reference and the VC‐containing electrolytes.…”

Section: Introductionmentioning

confidence: 95%

Microgravimetric and Spectroscopic Analysis of Solid−Electrolyte Interphase Formation in Presence of Additives

et al. 2019

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Electrochemical quartz crystal microbalance (EQCM) with damping monitoring is applied for real‐time analysis of solid−electrolyte interphase (SEI) formation in diphenyl octyl phosphate (DPOP) and vinylene carbonate (VC) modified electrolytes. Fast SEI formation is observed for the DPOP containing electrolyte, whereas slow growth is detected in VC‐modified and reference electrolytes. QCM measurements in a dry state show considerable reduction of the mass quantity for DPOP and reference samples and minor mass decrease for the SEI layer formed in the presence of VC. The results indicate that VC enhances SEI stability, whereas the addition of DPOP or no additive results in incorporation of loosely attached species, leadubg to SEI instability. Resonance frequency damping, Δw, and dissipation factor, D, are used for analyzing mechanical properties of the SEI layers. The apparent increase of Δw and D during SEI formation in presence of DPOP suggests a pronounced viscoelasticity of the layer. QCM results are compared with surface morphology and chemical composition, revealing excellent agreement of the applied characterization approaches.

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“…Previous studies [12][13][14][15][16] reported the promising potential of vinylene carbonate (VC), vinyl ethylene carbonate (VEC), and diphenyloctyl phosphate (DPOF) as flame-retardant additives to improve the cell performance and thermal stability of Li-ion batteries due to the formation of SEI on the surface electrodes. However, chemical processes, mechanism, and techniques for the specific identification of surface species are questionable.…”

Section: Introductionmentioning

confidence: 99%