3D analysis of a LiCoO_2-Li(Ni_(1/3)Mn_(1/3)Co_(1/3))O_2 Li-ion battery positive electrode using x-ray nano-tomography
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: LiCoO_2 (LCO)-Li(Ni_(1/3)Mn_(1/3)Co_(1/3))O_2 (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.
Additional Information
Copyright © 2013 Elsevier. Received 16 November 2012. Received in revised form 17 December 2012. Accepted 20 December 2012. Available online 28 December 2012. We thank Dr. Stephen Harris for providing the cells. The FIB–SEM sample preparation, conducted at the Center for Functional Nanomaterials (BNL) and the use of the NSLS were both supported by the U.S. Department of Energy, Office of Basic Energy Sciences under Contract No. DE-AC02-98CH10886. The authors at Northwestern University acknowledge the financial support from the National Science Foundation Ceramics program (DMR-0907639).Additional details
- Alternative title
- 3D analysis of a LiCoO2-Li(Ni1/3Mn1/3Co1/3)O2 Li-ion battery positive electrode using x-ray nano-tomography
- Eprint ID
- 49367
- DOI
- 10.1016/j.elecom.2012.12.021
- Resolver ID
- CaltechAUTHORS:20140908-181319557
- DE-AC02-98CH10886
- Department of Energy (DOE)
- DMR-0907639
- NSF
- Created
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2014-09-09Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field