Comparison of Positive Electrode Separation by Electrical Pulsed Discharge in Underwater and Air Environments

Soowon Lim, Kaito Teruya, Fuki Mizumoto, Minori Asao, Taketoshi Koita, Takao Namihira, Chiharu Tokoro*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This study presents a novel method to separate positive electrode active materials (PEAMs) and aluminum (Al) foil from positive electrodes (PEs) to enable more effective recycling processes. A pulsed current was applied to a PE sample that was prepared by manual dismantlement of spent lithium-ion batteries (LiBs). Joule heating caused the temperature of the Al foil to increase to be above the melting points of adhesion included in the PEAMs. The influence of the surrounding medium of the PE sample on the delamination phenomenon was investigated. PEAMs were peeled from the Al foil in water and air environments. High-speed visible imaging was employed to discuss separation processes. Differences in the size of the separated PEAMs and the amount of residual PEAM on the surface of the Al foil occurred due to the influence of the medium filled in the voids inside the PEAM layer.

Original languageEnglish
Pages (from-to)3625-3634
Number of pages10
JournalIEEE Transactions on Plasma Science
Volume50
Issue number10
DOIs
Publication statusPublished - 2022 Oct 1

Keywords

  • Batteries
  • cathodes
  • lithium compounds
  • pulse power systems
  • separation
  • waste materials

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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