Additives-containing functional electrolytes for suppressing electrolyte decomposition in lithium-ion batteries

Abe, Kôji; Yoshitake, Hideya; Kitakura, T.; Hattori, Takayuki; Wang, Hongyu; Yoshio, Masaki

doi:10.1016/j.electacta.2004.05.016

Cited by 189 publications

(108 citation statements)

References 14 publications

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“…12 VC has been used in many lithium ion batteries to increase first cycle efficiency, improve the high temperature stability, and improve the calendar life. [13][14][15][16] FEC has largely been used in silicon-based anode materials to improve capacity retention, but has also been investigated with graphite anodes. 15,17 However, there have been limited direct comparisons of the effects from FEC and VC on graphite electrodes especially related to differences in the structure of the anode SEI.…”

mentioning

confidence: 99%

Effect of Vinylene Carbonate and Fluoroethylene Carbonate on SEI Formation on Graphitic Anodes in Li-Ion Batteries

Nie

Demeaux

Young

et al. 2015

J. Electrochem. Soc.

188

173

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Binder free (BF) graphite electrodes were utilized to investigate the effect of electrolyte additives fluoroethylene carbonate (FEC) and vinylene carbonate (VC) on the structure of the solid electrolyte interface (SEI). The structure of the SEI has been investigated via ex-situ surface analysis including X-ray Photoelectron spectroscopy (XPS), Hard XPS (HAXPES), Infrared spectroscopy (IR) and transmission electron microscopy (TEM). The components of the SEI have been further investigated via nuclear magnetic resonance (NMR) spectroscopy of D 2 O extractions. The SEI generated on the BF-graphite anode with a standard electrolyte (1.2 M LiPF 6 in ethylene carbonate (EC) / ethyl methyl carbonate (EMC), 3/7 (v/v)) is composed primarily of lithium alkyl carbonates (LAC) and LiF. Incorporation of VC (3% wt) results in the generation of a thinner SEI composed of Li 2 CO 3 , poly(VC), LAC, and LiF. Incorporation of VC inhibits the generation of LAC and LiF. Incorporation of FEC (3% wt) also results in the generation of a thinner SEI composed of Li 2 CO 3 , poly(FEC), LAC, and LiF. The concentration of poly(FEC) is lower than the concentration of poly(VC) and the generation of LAC is inhibited in the presence of FEC. The SEI appears to be a homogeneous film for all electrolytes investigated. Lithium ion batteries have been used to power portable electronic devices for decades. Interest in lithium ion batteries has expanded to include electric vehicles (EV) due to their high energy density. [1][2][3] However, the calendar life of many lithium ion batteries is insufficient for the >10 year life expectancy of an EV.1 Thus there have been many recent investigations on methods to improve the calendar life of lithium ion batteries. Graphite is the most widely used anode material in lithium ion batteries. 4,5 During the initial charging cycles of the lithium ion battery a Solid Electrolyte Interphase (SEI) is generated on the graphite surface.6,7 The SEI acts as a passivation layer to inhibit further electrolyte reduction. 8 The SEI generated from standard ethylene carbonate based electrolytes has moderate thermal stability which leads to moderate calendar life. 9 In an effort to improve the stability of the SEI many film forming additives have been investigated. 10,11 Vinylene Carbonate (VC) and Fluoroethylene Carbonate (FEC) are among the most widely investigated electrolyte additives.12 VC has been used in many lithium ion batteries to increase first cycle efficiency, improve the high temperature stability, and improve the calendar life.13-16 FEC has largely been used in silicon-based anode materials to improve capacity retention, but has also been investigated with graphite anodes.15,17 However, there have been limited direct comparisons of the effects from FEC and VC on graphite electrodes especially related to differences in the structure of the anode SEI.The investigations of the components and morphology changes on graphite anode surfaces upon incorporation of small quantities of additives in a standard electrolyte 1....

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mentioning

confidence: 99%

Effect of Vinylene Carbonate and Fluoroethylene Carbonate on SEI Formation on Graphitic Anodes in Li-Ion Batteries

Nie

Demeaux

Young

et al. 2015

J. Electrochem. Soc.

188

173

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“…Presently, many organic additives fall into the category of polymerizable monomers. A non-exhaustive list includes esters (including carboxylic esters/carbonates and other inorganic esters such as phosphates, sulfates, and silicates) that are derived from vinyl and allyl alcohols [2,54,71], vinyl pyridine [63], acrylic acid nitrile [110], maleic acid derivatives [125,131], vinyl sulfones [128], vinyl silanes [113], and isocyanates [65,171] (Fig. 2).…”

Section: Sei Additives For Carbonaceous Anodesmentioning

confidence: 99%

Additives for Functional Electrolytes of Li-Ion Batteries

Tornheim

Zhang

et al. 2015

Rechargeable Batteries

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“…Therefore, use of these additives not only reduces gas generation but also increases the stability of the SEI due to the participation of additive molecular moieties to the SEI. Such additives contain one or more carbon-carbon double bonds in their molecules, and include vinylene carbonate [55][56][57][58][59][60], vinyl ethylene carbonate [59,61], allyl ethyl carbonate [62], vinyl acetate [63], divinyl adipate [64], acrylic acid nitrile [64], 2-vinyl pyridine [65], maleic anhydride [66], methyl cinnamate [1], phosphonate [67], and vinylcontaining silane-based compounds [68,69], and furan derivatives [70]. However, in addition to the reductive polymerization, the opposite oxidative polymerization can also occur on the positive electrode, which inevitably increases impedance and irreversibility of the cathode.…”

Section: Control Of the Seimentioning

confidence: 99%

Electrolytes and Separators for Lithium Batteries

et al. 2016

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Rechargeable lithium batteries are basically of two types; lithium metal batteries, and, lithium-ion batteries. Lithium metal batteries (LMB) provide a higher theoretical energy density than the alternatives: their wide commercial availability is limited, however, by the tendency to grow dendrites during cycling. This is a potential hazard and also reduces cycle lifetime. Attempts are being made to suppress dendritic growth either by using solid electrolytes that act as mechanical barriers, or by choosing electrolytes that produce a suitable passivation layer called the solid-electrolyte interphase (SEI). Since there is no entirely successful strategy to inhibit the growth of dendrites, safety concerns have led to the use of the other kind of lithium battery, namely, the lithium-ion battery (LiB).Lithium-ion batteries are now widely employed for a variety of applications in electronic devices, mobile telephones, laptop computers and a large variety of other portable appliances. They possess a very high energy density, are light and compact and show excellent cyclability and reliability. The current commercial Li-ion batteries are based on aprotic organic liquids such as ethylene carbonate or dimethyl carbonate which have high dielectric constant and are thus good solvents for salts; they also show a large window of electrochemical stability. However, their vapor pressure is high, so that they can provoke fires and explosions in case of accidental battery shorts, when low-stability cathodes are used such as oxides. Such safety issues become accentuated in large lithium-ion batteries of interest in electric cars, especially if charge-discharge is carried out at high rates. The safety aspect has thus become a paramount issue in the development of this technology. Another component important for safety issue is the separator. This element must have, among other properties, a good wettability with the electrolyte, so that the choice of the separator is dependent on the choice of the electrolyte, one reason why we have chosen to include them in the same chapter.

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Additives-containing functional electrolytes for suppressing electrolyte decomposition in lithium-ion batteries

Cited by 189 publications

References 14 publications

Effect of Vinylene Carbonate and Fluoroethylene Carbonate on SEI Formation on Graphitic Anodes in Li-Ion Batteries

Effect of Vinylene Carbonate and Fluoroethylene Carbonate on SEI Formation on Graphitic Anodes in Li-Ion Batteries

Additives for Functional Electrolytes of Li-Ion Batteries

Electrolytes and Separators for Lithium Batteries

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