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首页> 外文期刊>Electrochimica Acta >Reducing Li-ion safety hazards through use of non-flammable solvents and recent work at Sandia National Laboratories
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Reducing Li-ion safety hazards through use of non-flammable solvents and recent work at Sandia National Laboratories

机译：通过使用不易燃的溶剂以及桑迪亚国家实验室的最新工作减少锂离子安全危害

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摘要

This article will briefly discuss the genesis of the Li-ion chemistry and its meteoric rise to prominence, supplanting aqueous rechargeable batteries such as NiCd and NiMH. The principal intent of this article is to discuss the issues with thermal instability of common Li-ion electrolytes, which detract from the positive attributes of this chemistry. The development of an innovative low-cost non-flammable electrolyte will greatly improve the safety and reliability of lithium batteries, a key technological hurdle that must be overcome for the wider application of this chemistry. This article will also include the advancements made in combating/mitigating solvent flammability through the addition of fire retardants, fluoro-solvents, ionic liquids etc. The scope of the article will be limited to the flammability of non-aqueous solvents and will not include the thermal instability issues of anodes and cathodes. We will elaborate using examples from our in-house research aimed at mitigating solvent flammability by using hydrofluoro ethers (HFEs) as a cosolvent. Additionally, we will describe in-house capabilities for prototyping 18,650 cells and in-house thermal abuse test capabilities that allow us to evaluate materials and their thermal responses in actual cell configurations.
机译：本文将简要讨论锂离子化学的起源及其迅速崛起，以取代NiCd和NiMH等水性充电电池。本文的主要目的是讨论普通锂离子电解质的热不稳定性问题，这有损于该化学方法的积极特性。创新的低成本不易燃电解液的开发将大大提高锂电池的安全性和可靠性，这是该化学方法更广泛应用必须克服的关键技术障碍。本文还将包括通过添加阻燃剂，氟代溶剂，离子液体等在消除/减轻溶剂可燃性方面取得的进步。本文的范围将限于非水溶剂的可燃性，并且不包括阳极和阴极的热不稳定性问题。我们将使用内部研究的实例进行详细说明，这些实例旨在通过使用氢氟醚（HFE）作为助溶剂来减轻溶剂的可燃性。此外，我们将介绍用于18,650个电池原型的内部功能以及内部热滥用测试功能，这些功能使我们能够评估实际电池配置中的材料及其热响应。

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