Surface modification of carbon anodes for secondary lithium battery by fluorination

Nakajima, Tsuyoshi

doi:10.1016/j.jfluchem.2006.10.005

Cited by 26 publications

(23 citation statements)

References 34 publications

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“…During the first cycle, the Coulombic efficiency is relatively low. One of the main reasons is that the Coulombic efficiency is associated with the irreversible capacity loss during the first cycle that involves electrolyte decomposition and subsequent formation of a surface film (solid electrolyte interphase or interface: SEI) on the electrodes [58,59]. The surface film is conductive for lithium ions but is insulating electronically, which prevents the electrodes interaction with non-aqueous organic solutions.…”

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

“…However, the safety and recharge ability problems associated with using lithium metal as the anode have limited their wide and practical development [3,4]. Recently, outstanding progress in the development of lithium-ion batteries has been made by overcoming the safety limitations.…”

Section: Introductionmentioning

confidence: 99%

High performances of ultrafine and layered LiCoO2 powders for lithium batteries by a novel sol–gel process

Zhu

Yang

et al. 2010

Journal of Alloys and Compounds

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“…Several surface modifications have been applied to carbon materials in order to increase the electrochemical reaction rate and capacity, by using surface oxidation, surface fluorination, and high temperature treatment. In comparison with other surface modification techniques, fluorine atoms can penetrate the material surfaces to relatively great depths depending on treatment conditions [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Preparation and electrochemical characterization of platinum and ruthenium catalysts deposited on fluorinated carbon supports

et al. 2009

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The effect of fluorination on carbon blacks (CBs) was investigated by analyzing the CB surface functional groups. Also, fluorinated CB supported platinumruthenium electrocatalysts were studied. The surface characteristics of the fluorinated CB-supported catalysts were determined by Fourier transform infrared (FT-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS), and their crystallinity was evaluated using X-ray diffraction (XRD). The electrochemical properties of the fluorinated CB-supported platinum and ruthenium (Pt/Ru CBs) catalysts were analyzed by cyclic voltammetry (CV). From the FT-IR results, the introduction of a fluorine atom onto CBs was confirmed by the existence of a carbon-fluorine (C-F) characteristic peak. The XPS result also showed that the fluorine content increased with increasing heat treatment temperature. The XRD analysis revealed that the catalysts are composed of mostly Pt and Ru. This result agreed with the fact that the electrochemical activity of the Pt/Ru CB catalysts was enhanced due to the small size and a high loading of catalysts by surface modification of the CBs.

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Surface modification of carbon anodes for secondary lithium battery by fluorination

Cited by 26 publications

References 34 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

High performances of ultrafine and layered LiCoO2 powders for lithium batteries by a novel sol–gel process

Preparation and electrochemical characterization of platinum and ruthenium catalysts deposited on fluorinated carbon supports

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