Voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cell.

ABSTRACT: Hydrogen crossover rate is an important indicator for characterizing the membrane degradation and failure in proton exchange membrane fuel cell. Several electrochemical methods have been applied to quantify it. But most of established methods are too rough to support follow-up applications. In this paper, a systematic and consistent theoretical foundation for electrochemical measurements of hydrogen crossover is established for the first time. Different electrochemical processes occurring throughout the courses of applying potentiostatic or galvanostatic excitations on fuel cell are clarified, and the linear current-voltage behavior observed in the steady-state voltammogram is reinterpreted. On this basis, we propose a modified galvanostatic charging method with high practicality to achiev

SUBMITTER: Li S 

PROVIDER: S-EPMC8692992 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature