Fig. 2: 3D characterisation of the NMC cathode based on X-ray CT data. | Nature Communications

Fig. 2: 3D characterisation of the NMC cathode based on X-ray CT data.

From: 3D microstructure design of lithium-ion battery electrodes assisted by X-ray nano-computed tomography and modelling

Fig. 2

a Reconstructed volume of the electrode with different phases represented by greyscale values (white: NMC active material; dark grey: CBD; black: pore). The corner is cut to show the internal morphology; b segmented three phases; c colour-coded pore phase according to its size, shown with NMC particles; d Li+ ion diffusive flux map in the pore phase used for effective mass transport estimation; e identification of individual NMC particles; f visualisation of the shape, orientation and size of each individual particle; g resultant particle size distribution as a function of distance from the separator. Symbols are colour-coded according to the particle size; h sphericity distribution of the NMC particles. The size of the scatter points represents the size of the particles and the colour codes represent the sphericities; i orientation map of the individual particles, with the azimuthal angles and radial distance representing the in-plane and out-of-plane orientations; j tortuosity factor obtained based on the diffusive flux from (d) in three directions; k slice-by-slice variation of porosity and pore size in three orthogonal directions; l Bruggeman exponents as a function of the fraction of the electrode thickness in three orthogonal directions. The scale bar in (a) represents 10 μm.

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