细致描述不同阴极电池的热故障导致的颗粒排放
Huaibin Wang1, Qinzheng Wang2, Changyong Jin3
1China People's Police University, Langfang 065000, China.
Journal of hazardous materials
|June 18, 2023
概括
离子电池中的热失控会释放有害颗粒. 这项研究分析了NCM电池的粒子大小,成分和结构,揭示了环境和健康风险.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 电池技术 电池技术
背景情况:
- 离子电池在被滥用时可以经历热失控.
- 热 runaway 释放危险的颗粒,气体和蒸气,造成环境和健康风险.
- 这些排放可能导致污染和可燃混合物的潜在点火.
研究的目的:
- 为了描述不同阴极离子电池经历热失控的粒子排放.
- 为了确定粒子大小分布,元素组成,形态和晶体结构.
- 评估这些排放对环境和健康的潜在影响.
主要方法:
- 在NCM111,NCM523和NCM622电池上进行了加快的亚热测量测试.
- 分析包括粒子大小分布,元素组成 (使用质量百分比) 和晶体结构 (通过衍射模式).
主要成果:
- 颗粒物排放显示直径<=0.85毫米的体积分布峰值.
- 检测到的元素包括F,S,P,Cr和Ge,具有显著的质量百分比.
- 晶体结构主要由Ni/Co元素,石墨,Li2CO3,NiO,LiF,MnO和LiNiO2组成.
结论:
- 热失控的颗粒物排放由于其组成和尺寸,造成了环境和健康问题.
- 了解这些排放对于减轻与离子电池故障相关的风险至关重要.
- 这些发现提供了对电池热失控的潜在危险的见解.
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