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Related Experiment Videos

The 'use-by date' for lithium-ion battery components.

Scott F Gorman1, Tanveerkhan S Pathan1, Emma Kendrick1,2

  • 11 School of Metallurgy and Materials, University of Birmingham , Edgbaston, Birmingham B15 2TT , UK.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|July 9, 2019
PubMed
Summary

Material degradation during lithium-ion battery (LIB) manufacturing impacts performance. Storing components, even in controlled environments, affects battery properties, necessitating immediate use or careful alternative storage methods.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Lithium-ion battery (LIB) manufacturing involves slurry tape casting and electrode assembly.
  • Material degradation during manufacturing and component shelf-life significantly impact LIB performance.
  • The effects of material storage conditions on LIB components are not well understood in academia.

Purpose of the Study:

  • To investigate the time limitations and degradation issues of NMC-622//graphite cell components during manufacturing and storage.
  • To analyze the impact of different storage environments (dry room, vacuum oven, laboratory) on material properties and cell performance.
  • To characterize the degradation of electrodes and electrolytes under various storage conditions.

Main Methods:

  • Utilized an industrially sourced LiNi$_{0.6}$Mn$_{0.2}$Co$_{0.2}$O$_{2}$ (NMC-622)//graphite cell.
Keywords:
electrode degradationelectrode storagelithium-ion batteriesshelf life

Related Experiment Videos

  • Stored battery components in a dry room, vacuum oven, and laboratory environment.
  • Employed analytical surface techniques and electrochemical analysis to characterize material degradation and performance.

    • Main Results:

    • All tested storage conditions negatively affected the electrochemical performance of the LIB components.
    • Degradation was observed even with storage in a vacuum oven or dry room, indicating sensitivity to atmospheric conditions.
    • Material properties and cell performance were measurably altered by component storage duration and environment.

    Conclusions:

    • Immediate use of manufactured electrodes and electrolytes is recommended to maximize performance.
    • Alternative storage strategies are proposed for situations where immediate use is not feasible.
    • Understanding and mitigating material degradation during storage is crucial for reliable LIB manufacturing.