neutron imaging , magnetic resonance imaging , and transparent endplate design have been reported to study water content formation, distribution and removal. However, practical limitations exist for some of these approaches, often necessitating modifications to existing designs and materials. For instance, endplates, typically made of coated steel to improve weight-specific power density, pose challenges for X-ray radiography due to a large attenuation difference between light materials and dense materials . As a result, transparent X-ray windows need to be created by removing the current collector and endplate material, which could have implications for the local performance of the cell in the area of measurement .