Pouch‐Cell Architecture Downscaled to Coin Cells for Electrochemical Characterization of Bilateral Electrodes**

Abstract Research groups all over the world are testing new innovative electrodes for batteries aimed at being the next generation of energy‐storage devices. To date, the lab‐scale coin cells, which house two one‐sided electrodes, remain the most common tool to test new battery electrodes. However, many novel electrodes are bilateral by design. In addition, many new electrodes, such as silicon‐ and sulfur‐based, enable large areal capacities that might not be properly tested with any single counter electrode. Here, we suggest a technique to assemble coin cells that incorporate two unilateral electrodes with a bilateral electrode sandwiched between them. This method requires no unique equipment, and can help laboratories with limited resources to test their electrodes under realistic conditions that can better display the capabilities of their research products.