The dimensions of the cell including and tab locations are illustrated in Figure , with the tabs are located at opposite ends; from the top view, the positive tab is positioned 90° clockwise from the negative tab. The positive tab is 7.0 cm in length and is visible from both sides, whereas the negative tab is 5.0 cm in length and only visible from the side that has the electrode coating facing the inside of the jellyroll. Photographs of these tabs can be found in the Figure with their dimensions are outlined in Table . The cell jellyroll is electrically isolated from the cell casing by a thin plastic layer (thickness 20 µm) in the radial direction. In the axial direction, there is a thick plastic disc (thickness 0.22 mm) at the bottom and a perforated fibrous membrane (thickness 0.2 mm) at the top (Figure ). These components significantly lower the axial thermal conductivity by forming a barrier for heat conduction through the current collectors to the casing. The jellyroll is comprised of an electrode stack of two separators, a double-side coated positive electrode, and a double-side coated negative electrode. The copper current collector was not completely coated (Figure ). The jellyroll consisted of ca. 23 windings of the electrode stack, with the schematic of a single stack illustrated in Figure . The gravimetric and volumetric contributions of the components are summarised in Table .