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首页> 外文期刊>Journal of Energy Storage >Size distribution and elemental composition of vent particles from abused prismatic Ni-rich automotive lithium-ion batteries
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Size distribution and elemental composition of vent particles from abused prismatic Ni-rich automotive lithium-ion batteries

机译：滥用方形棱柱形富镍汽车锂离子电池排气颗粒的尺寸分布和元素组成

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摘要

The lithium-ion battery (LIB) jet is often accompanied by particulate matter (PM) (e.g. spark) during vent and combustion caused by thermal runaway. These hot PM could ignite the combustible vent gases, and the settleable matter may promote water and soil pollution. The aim of this study is to reveal the statistical size distribution and elemental composition of the settleable PM released by LIBs after thermal runaway. A fully charged commercial 50 Ah Li(Ni0.6Mn0.2Co0.2)O-2 cell was triggered by heating in a sealed chamber. These PM were divided into 4 samples using sieves. The sizes were analyzed and the elements were detected. The results show that these PM account for 11.20% of the cell mass. Nearly 45% of particles by mass were found to have a size less than 0.85 mm, with the median size being approximately 198 um. The main elements are carbon, nickel, cobalt, etc. The content of metallic elements is approximately 40%. The emissions also contain potentially toxic elements, including aluminum, lithium, fluorine, etc. The element species in different samples are similar, but their contents differ. The size distribution provides a basis for the design of the particle filter pore, and elemental composition reveals the pollution of LIB emissions.
机译：锂离子电池（LIB）喷口在排气和由热失控引起的燃烧期间经常伴有颗粒物（PM）（例如火花）。这些热的PM可能点燃可燃的排放气体，而可沉降的物质可能会促进水和土壤污染。这项研究的目的是揭示热失控后LIB释放出的可沉降PM的统计尺寸分布和元素组成。通过在密闭室内加热触发充满电的50 Ah Li（Ni0.6Mn0.2Co0.2）O-2商业电池。使用筛将这些PM分成4个样品。分析尺寸并检测元素。结果表明，这些PM占细胞质量的11.20％。发现按质量计接近45％的颗粒的尺寸小于0.85mm，中值尺寸约为198um。主要元素是碳，镍，钴等。金属元素的含量约为40％。排放物中还含有潜在的有毒元素，包括铝，锂，氟等。不同样品中的元素种类相似，但含量不同。尺寸分布为颗粒过滤器孔的设计提供了基础，元素组成揭示了LIB排放的污染。

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