Direct Probing the Electrical Double Layer at Graphite/Nafion Interface via Depth Profiling APXPS.

ABSTRACT: Understanding the electrical double layer (EDL) is fundamental for enhancing the efficiency, capacity, and stability of electrochemical systems. The EDL at the electrode/polyelectrolyte interface exhibits significantly different properties with a more complex structure compared to liquid electrolyte systems. Characterizing this intricate interface experimentally remains a major challenge. In this study, we directly observed the potential distribution at the electrode-polyelectrolyte interface using a delicate in situ electrochemical cell coupled with ambient pressure X-ray photoelectron spectroscopy (APXPS) at various probing depths. The electrode/polyelectrolyte (graphite/Nafion) interface was successfully constructed, and the APXPS measurements were performed under nonpolarizing conditio

SUBMITTER: Zang Y 

PROVIDER: S-EPMC12447508 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature