Dihydrophenazine derivatives for overcharge protection of rechargeable lithium batteries

Tran‐Van, François; Provencher, Manon; Choquette, Y.; Delabouglise, Didier

doi:10.1016/s0013-4686(98)00399-5

Cited by 25 publications

(13 citation statements)

References 5 publications

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“…A few factors could contribute to the excessive amount of oxygen: (1) according to the CasaXPS manual 2.3.15 Rev 1.2 [44] and other reported work [45,46], XPS atomic composition measurement has a scatter/error of about 10%; (2) the excessive amount of oxygen was likely to include a small amount of oxygen bound to carbon, possibly picked up during the sample transfer in air, and (3) the coating may also contain OH − groups and other low molecular weight alkyl silicate oligomers. It ought to be noted that these OH − groups, once formed, are difficult to remove [47] and may adversely affect battery performance because of its reactivity towards lithium metal [48]. Systematic and in-depth investigation need to be conducted in further research.…”

Section: Resultsmentioning

confidence: 99%

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Fu¹,

Luan²,

Argue³

et al. 2012

Journal of Power Sources

200

125

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. b s t r a c tThe novelty of this work is the formation and deposition of SiO 2 , as opposed to deposition using commercially available SiO 2 powder suspension in the solution, to form ceramic coating on polypropylene (PP) separators for lithium-ion battery. The formation of SiO 2 nanoparticles with uniform particle size is accomplished through direct hydrolysis of tetraethyl orthosilicate (TEOS), while the deposition of the formed SiO 2 on PP separators was conducted in the same solution containing polyvinylidene fluoridehexafluoropropylene (PVDF-HFP) as binders and acetone as the solvent. The effects of the ceramic coating on the surface morphology, tensile strength, contact angles, electrolyte uptake, thermal shrinkage of the PP separators and the cell performances such as battery rate capability and Coulombic efficiency were investigated. The coated separators show significant reduction in thermal shrinkage and improvement in tensile strength, contact angles, electrolyte uptake and battery performance as compared to the plain PP separator. Crown

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Section: Resultsmentioning

confidence: 99%

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Fu¹,

Luan²,

Argue³

et al. 2012

Journal of Power Sources

200

125

View full text Add to dashboard Cite

show abstract

“…In 1999, Delabouglise and co-workers first examined the dihydrophenazine system (4 in Figure 2) as a redox shuttle. 14 The introduction of alkyl groups into the N atoms played a key role in enhancing the overcharge performance of the dihydrophenazine system. 14 Around the same time, Adachi and co-workers conducted a screening study, investigating a series of metallocene and dimethoxybenzene (5-8 in Figure 2) derivatives.…”

Section: Brief Historymentioning

confidence: 99%

Redox Shuttle Additives for Lithium-Ion Battery

Zhang¹,

Zhang²,

Amine³

2012

Lithium Ion Batteries - New Developments

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“…To enable internal and self‐actuating overcharge protection of LIBs, various kinds of redox shuttles, as well as polymerizable monomers, have been proposed in recent years as antiovercharge electrolyte additives. The redox shuttles can prevent the cell from overcharge reversibly by locking the potential of the positive electrode through their redox reactions.…”

Section: Introductionmentioning

confidence: 99%

A redox‐active polythiophene‐modified separator for safety control of lithium‐ion batteries

Zhang

Cao

et al. 2013

J Polym Sci B Polym Phys

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A potential‐sensitive separator is prepared simply by incorporating a redox‐active poly(3‐butylthiophene) (P3BT) into the micropores of a commercial porous polyolefin film and tested for overcharge protection of LiFePO4/Li4Ti5O12 lithium‐ion batteries. The experimental results demonstrate that owing to the reversible p‐doping and dedoping of the redox‐active P3BT polymer embedded in the separator with the changes of the cathode potential from an overcharge state to a normal operating state, this type of separator can reversibly switch between electronically insulating state and conductive state to maintain the charge voltage of LiFePO4/Li4Ti5O12 cells at a safety value of ≤2.4 V, and thus protecting the cell from voltage runaway. As this type of the separators works reversibly and has no negative impact on the battery performances, it can be used as an internal and self‐protecting mechanism for commercial lithium‐ion batteries and other rechargeable batteries. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013, 51, 1487–1493

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Dihydrophenazine derivatives for overcharge protection of rechargeable lithium batteries

Cited by 25 publications

References 5 publications

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Redox Shuttle Additives for Lithium-Ion Battery

A redox‐active polythiophene‐modified separator for safety control of lithium‐ion batteries

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