Red: 1 mAh/cm2 Blue: 3mAh/cm 2 with an anode area of 0.0173 m 2 and 0.0519 m 2 respectively. Dashed black lines are the base electrolyte from averaging the n-number of cells as noted in the top left corner, blue are the cells with 3x the areal loading and hence ca. 3x the electrode surface area and red is a 1x areal loading. There are six distinct peaks that differ in shape between electrode loadings (effective electrode area). This plot provides strong evidence that considering the relative mass of an additive in the electrolyte whilst ignoring electrode surface area is an unsuitable descriptor for battery electrochemistry, suggesting the need for alternative descriptors.