Abstract:
:Spatially-resolved neutron powder diffraction with a gauge volume of 2 × 2 × 20 mm(3) has been applied as an in situ method to probe the lithium concentration in the graphite anode of different Li-ion cells of 18650-type in charged state. Structural studies performed in combination with electrochemical measurements and X-ray computed tomography under real cell operating conditions unambiguously revealed non-homogeneity of the lithium distribution in the graphite anode. Deviations from a homogeneous behaviour have been found in both radial and axial directions of 18650-type cells and were discussed in the frame of cell geometry and electrical connection of electrodes, which might play a crucial role in the homogeneity of the lithium distribution in the active materials within each electrode.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Senyshyn A,Mühlbauer MJ,Dolotko O,Hofmann M,Ehrenberg Hdoi
10.1038/srep18380subject
Has Abstractpub_date
2015-12-18 00:00:00pages
18380issn
2045-2322pii
srep18380journal_volume
5pub_type
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