Journal article
Characterization of the 3-dimensional microstructure of a graphite negative electrode from a Li-ion battery
Imperial College London1
Natural History Museum2
Microstructures and Interfaces, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
Risø National Laboratory for Sustainable Energy, Technical University of Denmark5
General Motors6
The 3-dimensional microstructure of a porous electrode from a lithium-ion battery has been characterized for the first time. We use X-ray tomography to reconstruct a 43 × 348 × 478 μm sample volume with voxel dimensions of 480 nm, subsequent division of the reconstructed volumes into sub-volumes of different sizes allow us to determine microstructural parameters as a function of sub-division size.
We show that the minimum size for a representative volume element is about 43 × 60 × 60 μm for volume-specific surface area, but as large as the full sample volume for porosity and tortuosity.
Language: | English |
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Year: | 2010 |
Pages: | 374-377 |
ISSN: | 18731902 and 13882481 |
Types: | Journal article |
DOI: | 10.1016/j.elecom.2009.12.038 |
ORCIDs: | Jørgensen, Peter Stanley |