3D analysis of a LiCoO2-Li(Ni1/3Mn 1/3Co1/3)O2 Li-ion battery positive electrode using x-ray nano-tomography

Yu Chen Karen Chen-Wiegart, Zhao Liu, Katherine T. Faber, Scott A Barnett, Jun Wang*

*Corresponding author for this work

Research output: Contribution to journalArticle

70 Scopus citations

Abstract

A full-field high-resolution x-ray nano-tomography technique, transmission x-ray microscopy (TXM), was used to reveal the 3D morphology of the lithium ion battery composite positive electrode: LiCoO2 (LCO)-Li(Ni 1/3Mn1/3Co1/3)O2 (NMC). The TXM method allowed the unambiguous chemical identification of oxide particles by tuning the x-ray energy relative to the transition-metal absorption edges. The NMC particles have a much rougher surface compared to the LCO particles. Cracks due to processing exist in both LCO and NMC particles but the NMC particles exhibit more severe cracking and also tend to have internal pores in addition to radial cracks. Further, the carbon-based phases including the binder and the conductive carbon were identified using Zernike phase contrast imaging.

Original languageEnglish (US)
Pages (from-to)127-130
Number of pages4
JournalElectrochemistry Communications
Volume28
DOIs
StatePublished - Mar 1 2013

Keywords

  • 3D structural analysis
  • Li-ion battery
  • X-ray nano-tomography

ASJC Scopus subject areas

  • Electrochemistry

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