基于不同背景选取方式四极质谱仪数据库匹配分析

Quadrupole mass spectrometer database identification analysis based on different background selection methods

电解液测试属于锂电池研究的重点方向之一。质谱法在线测试电解液时,背景信号对搜库结果匹配度有明显的影响。研究了在不同背景选取方式下四极质谱仪识别电解液谱峰的匹配度,结果表明,基于进样阶段选取背景的扣除方法,可更有效地去除环境空气对搜库的干扰,获得更高的搜库匹配度。实验结果为锂电池电解液溶剂原位测试与谱库匹配数据处理提供了科学依据,为复杂环境现场测试的数据处理方法提供了思路。

Electrolyte analysis is one of the key directions of lithium ion battery research.When testing the electrolyte online by mass spectrometry,the background signal has a significant effect on the matching degree of the sprectrum identification.The matching degree of electrolyte sprectrum identified by quadrupole mass spectrometer upon different background selection methods was studied.The results showed that the deduction method based on the background selection in the injection stage can more effectively remove the interference of ambient air on the spectrum identification and obtain a higher matching degree.The experimental results provide a scientific basis for the in-situ test and spectrum identification of electrolyte,and ideas for the data processing method of complex environments testing.