Abstract: This report describes the implementation in-line of the inductively-coupled plasma mass spectrometry (ICP-MS) with an electrochemical cell which mimics the conditions of the rotating-disk electrode (RDE) setup, and its application to Pt/C and Pt-Nd/C electrocatalysts. The goal is to observe the dissolution of metal during electrochemical stimulation.

Public abstract: This report describes the synthesis and characterisations of a highly-loaded PtCo intermetallic supported on sulfur-doped carbon with high Pt loading. This catalyst was tested with a stability test protocol in rotating disk electrode (RDE) compared with Pt reference from the project. PtCo/SC showed better retention of electrochemical active surface area (ECSA) and higher mass activity (MA) than Pt reference catalyst. It was used in the fabrication of a cathode catalyst layer, and accelerated stress tested through high voltage cycling (1.0 – 1.5 V) while continuously monitoring the cathode exhaust gas for CO₂ using an IR detector. The results show that the PtCo on SC has lower CO₂ loss than that detected from an otherwise identical MEA with the project reference catalyst.

Public abstract: Work Package 3 (WP3) aims to develop advanced catalysts with optimized synthesis strategies, improved characterization, and enhanced electrochemical performance. The objective is to achieve high activity and stability with minimal PGM loading by ensuring homogeneous ionomer coverage and controlled catalyst deposition. The approach involves modifying carbon supports to promote specific interactions with catalyst nanoparticles and ionomers, improving dispersion and adhesion. Various characterization techniques, including XPS and immersion calorimetry, are used to assess electronic interactions and quantify ionomer affinity. Sulfur-functionalized supports are evaluated for their impact on hydrophilicity, catalyst stability, and electrochemical surface area retention. The role of surface modifications in enhancing catalyst performance is investigated. The methodology integrates material design with performance validation to ensure practical applicability. The findings contribute to developing durable, high-performance catalysts for fuel cell applications.