Fig. 3: Cathode thickness and intensity change during discharging. | Nature Communications

Fig. 3: Cathode thickness and intensity change during discharging.

From: 4D imaging of lithium-batteries using correlative neutron and X-ray tomography with a virtual unrolling technique

Fig. 3

a shows cut-outs of virtual unrolled multilayer sections of the measured X-ray tomograms at different SoC from the pristine state (000) to the partly discharged state (096) to −604.90 mAh. The thickness increases of the LixMnO2 electrode, during the discharge, is about 27% measured by the full-width at half-maximum (FWHM). The intensity plot shows a higher lithium intercalation in the cell outward electrode side by a lower intensity ‘shoulder’. b shows a similar behaviour for the discharged cell imaged by neutrons. The electrode swelling is about 30% for a cell discharge to −745.08 mAh (07) and 26.5% to 580.55 mAh (06), which shows a similar electrode expansion as for the X-ray tomograms due to the similar discharge conditions. The plots illustrate the complementarity between X-rays and neutrons.

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