期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 12, 期 3, 页码 374-377出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.12.038
关键词
X-ray tomography; Microstructure; Representative volume element; Battery; Graphite electrode
资金
- UK EPSRC [GR/T26344]
- Danish Council for Strategic Research [2104-06-0011]
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 x 348 x 478 mu m 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 x 60 x 60 mu m for volume-specific surface area, but as large as the full sample volume for porosity and tortuosity. (C) 2009 Elsevier B.V. All rights reserved.
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