Performance of Saphion Type Batteries using SEPARION Separators

Hennige, Volker; Augustin, Sven; Hoerpel, Gerhard; Hying, Christian; Tarabocchia, John; Swoyer, J. L.; Saidi, Y.

doi:10.1149/ma2005-02/2/80

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…One potential solution is to fill the pores with inorganic particles and adjust them to ensure insulation while providing pathways for lithium-ion migration. For instance, Evonik Industries AG utilizes silica sol to attach inorganic particles onto the PET nonwoven fabric, creating composite separators . Unfortunately, weak adhesion between the fabric and inorganic particles has resulted in certain defects, hindering the effectiveness of this method.…”

Section: Introductionmentioning

confidence: 99%

Influence of the PET–PTFE Separator Pore Structure on the Performance of Lithium Metal Batteries

Li,

Gao,

Duan

et al. 2024

ACS Appl. Mater. Interfaces

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The separator is a crucial component in lithium batteries, as it physically separates the cathode and the anode while allowing ion transfer through the internal channel. The pore structure of the separator significantly influences the performance of lithium batteries, particularly lithium metal batteries. In this study, we investigate the use of a Janus separator composed of poly(ethylene terephthalate) (PET)−polytetrafluoroethylene (PTFE) fibers in lithium metal batteries. This paper presents a comprehensive analysis of the impact of this asymmetric material on the cycling performance of the battery alongside an investigation into the influence of two different substrates on lithiumion deposition behavior. The research findings indicate that when the rigid PET side faces the lithium metal anode and the soft PTFE side faces the cathode, it significantly extends the cycling lifespan of lithium metal batteries, with an impressive 82.6% capacity retention over 2000 cycles. Furthermore, this study demonstrates the versatility of this separator type in lithium metal batteries by assembling the lithium metal electrode with high cathode-loading capacities (4 mA h/ cm 2 ). In conclusion, the results suggest that the design of asymmetric separators can serve as an effective engineering strategy with substantial potential for enhancing the lifespan of lithium metal batteries.

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Section: Introductionmentioning

confidence: 99%

Influence of the PET–PTFE Separator Pore Structure on the Performance of Lithium Metal Batteries

Li,

Gao,

Duan

et al. 2024

ACS Appl. Mater. Interfaces

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“…ICM separator also called ceramic separator combines the excellent wettability and extremely thermal stability based on flexible perforated non-woven polyethylene terephthalate (PET) mat which is coated with a porous ceramic layer on both sides. The pore size can precisely be set by the choice of the ceramic materials which mainly exist of a composition of alumina, silica and zirconia 18 . Physical properties of the investigated separator materials are shown in Table I.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Influence of the Electrolyte Composition on the Ageing Behavior of Separators in Lithium-Ion Cells

Kraemer¹,

Hintennach

Meiler³

2015

ECS Trans.

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The most widely used liquid non-aqueous electrolytes for lithium-ion cells used in electronic consumer and automotive applications consist of lithium hexafluorophosphate (LiPF6) as conductive salt dissolved in a mixture of carbonate esters (cyclic and linear) with the structural unit RO-CO–OR. The separator is a second safety related component in lithium-ion cells, which can be classified into three groups according to the structure: microporous polymer membranes (MPM), non-woven fabric mats (FM) and inorganic composite membranes (ICM). Both non-active components can take part at calendar and cyclic ageing in lithium-ion cells. In this work we report investigations of long-term decomposition reaction mechanisms of a binary electrolyte system. Furthermore, the mutual interaction ageing behavior of both components are investigated.

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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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Performance of Saphion Type Batteries using SEPARION Separators

Abstract: not Available.

Cited by 4 publications

References 4 publications

Influence of the PET–PTFE Separator Pore Structure on the Performance of Lithium Metal Batteries

Influence of the PET–PTFE Separator Pore Structure on the Performance of Lithium Metal Batteries

Experimental Investigation of the Influence of the Electrolyte Composition on the Ageing Behavior of Separators in Lithium-Ion Cells

Electrolytes and Separators for Lithium Batteries

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