Effect of Membrane Properties on the Carbonation of Anion Exchange Membrane Fuel Cells.

ABSTRACT: Anion exchange membrane fuel cells (AEMFC) are potentially very low-cost replacements for proton exchange membrane fuel cells. However, AEMFCs suffer from one very serious drawback: significant performance loss when CO₂ is present in the reacting oxidant gas (e.g., air) due to carbonation. Although the chemical mechanisms for how carbonation leads to voltage loss in operating AEMFCs are known, the way those mechanisms are affected by the properties of the anion exchange membrane (AEM) has not been elucidated. Therefore, this work studies AEMFC carbonation using numerous high-functioning AEMs from the literature and it was found that the ionic conductivity of the AEM plays the most critical role in the CO₂-related voltage loss from carbonation, with the degree of AEM c

SUBMITTER: Zheng Y 

PROVIDER: S-EPMC7912077 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature