Covalent catalyst immobilization in cross-linked ionomers for durable pure water anion exchange membrane electrolysis.

ABSTRACT: Anion exchange membrane water electrolysis technology, which employs alkaline electrolytes, has emerged as a highly promising alternative to the acidic counterparts. However, the development of pure water-fed anion exchange membrane water electrolysis remains in its nascent stage, hindered by suboptimal ionomer performance, along with an unstable catalyst-ionomer interface induced by the Marangoni effect during the fabrication of catalyst layers. In this study, we introduce a strategy to overcome these challenges by employing in-situ covalent anchoring of the catalyst within cross-linked ionomer networks. Through synchrotron X-ray three-dimensional computed tomography characterization, complemented by extensive electrochemical analysis and multiphysics simulations, we demonstrate that the

SUBMITTER: Song W 

PROVIDER: S-EPMC12644498 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature