Publication detail

Electrochemical methods to detect water-contaminated electrolytes for lithium-ion batteries

ŠIMEK, A. ČECH, O. KAZDA, T.

Original Title

Electrochemical methods to detect water-contaminated electrolytes for lithium-ion batteries

Type

presentation, poster

Language

English

Original Abstract

Today, the most commonly used type of electrolyte is non-aqueous, which is composed of a lithium salt (most commonly lithium hexafluorophosphate or LiPF6) dissolved in a mixture of organic solvents (such as ethylene carbonate, propylene carbonate, dimethyl carbonate, and others). However, LiPF6 undergoes significant degradation when exposed to water, alcohols, or even moisture. During the degradation process, LiPF6 decomposes to form hydrofluoric acid (HF), resulting in a number of degradation processes. During the experiment, electrochemical methods were used to detect the presence of water. Electrolytes were measured in different configurations corresponding to the working potentials of the anode and cathode. Subsequently, the temporal effect of HF on the measured waveforms was evaluated along with the degradation of the Whatman GF/C™ glass separator.

Keywords

Electrolyte, Li-ion batteries, electrochemical window,

Authors

ŠIMEK, A.; ČECH, O.; KAZDA, T.

Released

4. 9. 2023

Publisher

International Society of Electrochemistry

Location

Lyon, Francie

Pages count

1

BibTex

@misc{BUT197138,
  author="Antonín {Šimek} and Ondřej {Čech} and Tomáš {Kazda}",
  title="Electrochemical methods to detect water-contaminated electrolytes for lithium-ion batteries",
  year="2023",
  pages="1",
  publisher="International Society of Electrochemistry",
  address="Lyon, Francie",
  note="presentation, poster"
}