The role of oxygen-permeable ionomer for polymer electrolyte fuel cells.

ABSTRACT: In recent years, considerable research and development efforts are devoted to improving the performance of polymer electrolyte fuel cells. However, the power density and catalytic activities of these energy conversion devices are still far from being satisfactory for large-scale operation. Here we report performance enhancement via incorporation, in the cathode catalyst layers, of a ring-structured backbone matrix into ionomers. Electrochemical characterizations of single cells and microelectrodes reveal that high power density is obtained using an ionomer with high oxygen solubility. The high solubility allows oxygen to permeate the ionomer/catalyst interface and react with protons and electrons on the catalyst surfaces. Furthermore, characterizations of single cells and single-crystal su

SUBMITTER: Jinnouchi R 

PROVIDER: S-EPMC8368003 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature