Four-dimensional joint visualization of electrode degradation and liquid water distribution inside operating polymer electrolyte fuel cells.

ABSTRACT: Understanding of degradation mechanisms present in polymer electrolyte fuel cells (PEFCs) is important to continue the integration of this clean energy technology into everyday life. Further comprehension of the interaction between various components during fuel cell operation is also critical in this context. In this work, a four-dimensional operando X-ray computed tomography method is developed for combined visualization of all PEFC components as well as transient water distribution residing in the cell, which results as a by-product of the electrochemical reaction. Time resolved, identical-location visualization through degradation stages is uniquely enabled by the non-invasive and non-destructive qualities of this method. By applying an accelerated stress test that targets cathode cata

SUBMITTER: White RT 

PROVIDER: S-EPMC6372714 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature