锂电池成分分析

LAAN-E-MS-E022

GCMS

Gas Chromatograph Mass Spectrometer

22

Experiment Analysis of Gas Generated from Lithium Ion Rechargeable Battery CellsElectrolytic solutions in lithium ion rechargeable batteries consist of organic solvents (mainly composed of the carbonate series), electrolytes, and additives.GC-MS systems are effective for the analysis of the denatured components of electrolytic solutions resulting from the charging and discharging of batteries. This article introduces a sample analysis of gas produced from a lithium ion rechargeable battery cell stored for 5 days at 80o C. Sample Extraction

A laminated aluminum battery was stored for 5 days at 80o C. The battery was then punctured directly by the tip of a gas tight syringe needle, and the gas compounds inside were collected.Table 1: Analysis Conditions

GC-MS :GCMS-QP2010Ultra

Column :Rt-Q-BOND(30mL. x 0.32mmI.D., 10µm)+Guard column (3mL. x 0.32mmI.D.)

[GC][MS]Vaporization chamber temperature: 200 ℃Interface temperature:200℃Column oven temperature: 35 ℃(3 min) →(10 ℃/min)→260 ℃(5 min)Ion source temperature:200℃Injection mode: Split Measurement mode :Scan Split ratio: 30Mass range :m/z10to 300Carrier gas: Helium Event time :0.3sec Control mode:Linear velocity (61.6 cm/sec)

Sample injection quantity: 500 µL

Results

Total Ion Current Chromatogram (expanded view)

Fig. 1: Total Ion Current Chromatogram for Gas Generated from the Cell

For Research Use Only. Not for use in diagnostic procedures.

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First Edition: October 2011


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