Liquid Chromatography-Quadruple Time of Flight Mass Spectrometry (LC-QToF/MS) for Deterioration Analysis of Lithium-ion Battery during Storage

研究成果: Article

抄録

Degradation of lithium-ion battery (LIB) was evaluated by using liquid chromatography-quadruple time of flight mass spectroscopy (LC-QToF/MS). Lab-made LIBs were degraded by storing at their states of charge of 50% at 25 or 60°C for three months. The degradation of the LIB was accelerated at 60°C compared with that at 25°C. The electrochemical impedance spectroscopy analysis suggested that the remarkable degradation occurred for solid electrolyte interphase (SEI): it was implied that on one hand, the composition of the SEI for the LIB degraded at 25°C did not vary, on the other hand, that at 60°C varied. For LC-QToF/MS analysis, although decomposed products derived from the electrolyte solution were detected from the electrolyte in the LIB degraded at both 25 and 60°C, those decomposed products were almost the same. Whereas, the difference between decomposed products at 25 and 60°C was confirmed for the interphases between electrodes and electrolyte. The characteristic decomposed products at 60°C was a product with more than C35 and more than 500m/z of mass number. This product should be one of the reason of capacity degradation due to the internal resistance increase. Thus, a possibility of LC-QToF/MS was demonstrated.

元の言語English
ページ(範囲)721-727
ページ数7
ジャーナルElectrochemistry
85
発行部数11
DOI
出版物ステータスPublished - 2017 1 1

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Liquid chromatography
Mass spectrometry
Deterioration
Electrolytes
Degradation
Solid electrolytes
Electrochemical impedance spectroscopy
Spectroscopy
Electrodes
Lithium-ion batteries
Chemical analysis

ASJC Scopus subject areas

  • Electrochemistry

これを引用

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title = "Liquid Chromatography-Quadruple Time of Flight Mass Spectrometry (LC-QToF/MS) for Deterioration Analysis of Lithium-ion Battery during Storage",
abstract = "Degradation of lithium-ion battery (LIB) was evaluated by using liquid chromatography-quadruple time of flight mass spectroscopy (LC-QToF/MS). Lab-made LIBs were degraded by storing at their states of charge of 50{\%} at 25 or 60°C for three months. The degradation of the LIB was accelerated at 60°C compared with that at 25°C. The electrochemical impedance spectroscopy analysis suggested that the remarkable degradation occurred for solid electrolyte interphase (SEI): it was implied that on one hand, the composition of the SEI for the LIB degraded at 25°C did not vary, on the other hand, that at 60°C varied. For LC-QToF/MS analysis, although decomposed products derived from the electrolyte solution were detected from the electrolyte in the LIB degraded at both 25 and 60°C, those decomposed products were almost the same. Whereas, the difference between decomposed products at 25 and 60°C was confirmed for the interphases between electrodes and electrolyte. The characteristic decomposed products at 60°C was a product with more than C35 and more than 500m/z of mass number. This product should be one of the reason of capacity degradation due to the internal resistance increase. Thus, a possibility of LC-QToF/MS was demonstrated.",
keywords = "Degradation during Storage, Liquid Chromatography-quadruple Time of Flight Mass Spectrometry, Lithium-ion Battery, Ultra-high Performance Liquid Chromatography",
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AU - Yokoshima, Tokihiko

AU - Momma, Toshiyuki

AU - Osaka, Tetsuya

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