Improved Abuse Tolerance of PoLiFlex Batteries using SEPARION Separators

Hennige, Volker; Augustin, Sven; Hoerpel, Gerhard; Hying, Christian; Haug, Peter; Perner, A.; Pompetzki, M.; Woehrle, Thomas; Wurm, Cǎlin; Ilić, Dejan

doi:10.1149/ma2005-02/2/84

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…In addition, according to previously reported work, a ceramic composite or ceramic separator could increase in wettability 1 and thermal stability of the separator. [6][7][8] However, the ceramic separator suffers from inflexibility. Because the ceramic composite separators were produced by slip coating of ceramic particles with few micrometers in diameter, the separators showed large mean pore sizes and wide pore-size distributions, compared to a conventional microporous membrane separator.…”

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confidence: 99%

Silica-Composite Nonwoven Separators for Lithium-Ion Battery: Development and Characterization

Cho

Tanaka²,

Ōnishi³

et al. 2008

J. Electrochem. Soc.

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We have developed silica-composite nonwovens using polyolefin fiber and nanosize silica powder. The silica-composite nonwoven showed better wettability than the polyolefin-based microporous membrane and nonwoven. It was found that the Gurley value of the silica-composite nonwoven has to be higher than 200 s 100 cm −3 in order to suppress a microshort of battery. It was confirmed that the silica-composite nonwovens showed higher maximum power than that of the Celgard membrane by instantaneous discharging test. The cells with the silica-composite nonwovens showed better cycling performances than that of the Celgard membrane at a moderate C-rate of 0.5. A hot-oven test using charged cells up to 4.2 V exhibited that the cells with the silicacomposite nonwovens are thermally stable at 150°C, whereas the cell with the Celgard membrane showed a short circuit probably due to thermal shrinkage of the separator.

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confidence: 99%

Silica-Composite Nonwoven Separators for Lithium-Ion Battery: Development and Characterization

Cho

Tanaka²,

Ōnishi³

et al. 2008

J. Electrochem. Soc.

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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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Critical review on lithium-ion batteries: are they safe? Sustainable?

Mauger

Julien

2017

Ionics

180

113

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The goal of this critical review is to explain why the safety problem raised by the lithium batteries must be considered. The performance of the batteries with different chemistries is compared and analyzed, with emphasis on the safety aspects, in addition to the electrochemical properties of the cells. Problems encountered with cathode materials (layered compounds, spinel and olivine), anode materials (graphite and lithium titanate), electrolytes, lithium salts, and separators are pointed out. In this critical review, we also discuss the place of the lithium batteries in the context of sustainable energies (electric vehicles, smart grid).

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Improved Abuse Tolerance of PoLiFlex Batteries using SEPARION Separators

Abstract: not Available.

Cited by 3 publications

References 2 publications

Silica-Composite Nonwoven Separators for Lithium-Ion Battery: Development and Characterization

Silica-Composite Nonwoven Separators for Lithium-Ion Battery: Development and Characterization

Electrolytes and Separators for Lithium Batteries

Critical review on lithium-ion batteries: are they safe? Sustainable?

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