Remanufacturing cathode from end-of-life of lithium-ion secondary batteries by Nd:YAG laser radiation

Wei Wei Liu, Heng Zhang, Li Hong Liu, Xiao Chuan Qing, Zi Jue Tang, Ming Zheng Li, Jin Song Yin, Hong Chao Zhang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The electric vehicle industry has been rapidly developing internationally. Electric vehicle batteries (EVBs) are perceived as a low environmental impact energy storage technology. While the service life of an EVB is relatively long, a significant number of battery packs will reach the end of their service lives eventually. The end-of-life (EOL) EVBs may still have appreciable residual value for remanufacturing and secondary use. Some solid-electrolyte interface (SEI) layers will persist on the surface of electrodes deposit after a period of continuous cycling, causing the battery degradation and failure. An approach to battery end-of-life management was introduced involving remanufacturing of the cathode from EOL lithium-ion battery electrodes, and a recent study on remanufacturing process of the degraded EVBs using pulse laser to radiate SEI on the electrode surface was presented in this paper, here on a laboratory scale. Based on experimental data, the SEI film removal was carried out with laser energy intensity ranging from 0.035 to 0.169 J/mm2. The remanufactured cathodes were characterized through a combination of scanning electron microscopy, Fourier transform infrared spectroscopy, and wavelength dispersive spectrometer, respectively. The experimental results indicated that the remanufacturing treatments were successful in removing the EOL by-products (e.g., SEI films) and upgrading the cathode to its pre-cycling functionality. It is suggested that the fade capacity of a lithium-ion battery can be recovered by using laser radiation method.

Original languageEnglish
Pages (from-to)231-243
Number of pages13
JournalClean Technologies and Environmental Policy
Volume18
Issue number1
DOIs
StatePublished - Jan 1 2016

Keywords

  • Electric vehicle
  • Electrode materials
  • End-of-life
  • Laser cleaning
  • Remanufacturing

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