The diagram shows the structure and working of a battery device. It includes a positive current collector, a positive electrode, a separator, a negative electrode, and a negative current collector. Arrows indicate the flow of current and electrons through the device. Inside the positive and negative electrodes are circles showing lithium ions, lithium intercalated sites, and electrochemical reaction sites. The diagram is labelled with distances for the positive electrode, separator, and negative electrode. The legend defines symbols for lithium ion, lithium intercalated, and electrochemical reaction site.Representation of the interconnected dimensions for the pseudo-two-dimensional model during a discharge: , for the cell thickness and , for the particle radius
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