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HANNOVER MESSE 2020, 20 - 24 April
Homepage>Exhibitors & Products >Flame-retardant

Flame-retardant

Novel Electrolyte Makes Lithium Ion Batteries Safe and Powerful.

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Karlsruher Institut für Technologie

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Exhibitor details
Logo Flame-retardant

Product description

Accumulator batteries are designed to power mobile electric equipment and vehicles safely in all kinds of applications. This means that all material and chemicals used should be as non-toxic and flame-retardant as possible, in particular also with regard to the electrolytes used. Electrolytes are to enable charge equalization. In the lithium ion accumulator batteries now used more and more frequently, the positively charged lithium ions balance out the electron movement necessary for charging or discharging. Many of the electrolytes currently available and considered safe have the drawback of allowing only limited mobility of the lithium ions. This is true in particular of solid electrolytes and ionic liquids. KIT scientists of the Institute for Applied Materials - Materials Studies (IAM-WK) developed a new electrolyte which achieves good mobility of the lithium ions and is flame-retardant at the same time. The new electrolyte solution consists of a mix of a carbonate ring and a sulphone derivative. The molecules are relatively small, hardly impeding movement of the lithium ions. The electrolyte developed at the KIT is clearly more flame-retardant than many known liquid electrolytes. The flash point of the new electrolyte mix is above 140°C. In addition, the liquid has comparatively low viscosity and an extremely high boiling point. A high boiling point is an advantage because it can avoid gas formation and bursting of the accumulator battery at higher temperatures. The electrolyte solution can be used in a temperature range between approximately 0 and at least 60°C.

You can get an overview of this technology at KIT stand. Detailed information can be exchanged individually in contact with the responsible scientific employees of KIT after the industry fair.

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