One critical problem regarding the cycling stability of batteries in commercial cell formats (limited dead volume), like pouch cells, is battery swelling . Multiple aspects contribute to the overall swelling, including electrode stack swelling and gaseous swelling . On one hand, SEI builds up upon fracture and growth during repetitive cycling and calendar aging . On the other hand, the accumulation of gaseous byproducts, such as hydrogen gas, poses a significant risk to battery structural integrity as well as to safety due to their inherent flammability . Moreover, these gaseous species can potentially react with the electrode to cause loss of lithium inventory . For example, Li metal anode was hypothesized to react with hydrogen to form LiH during cycling .