Public 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: The initial membrane development work in HIGHLANDER is described within this report, including selection of bill of materials and manufacturing processes. Some of the processing conditions used led to early failures which have been investigated and the root cause identified; further. 

Public Abstract: Protecting polymers from radical attack is crucial for preventing degradation and maintaining performance, especially in proton exchange membranes (PEMs) for fuel cells. These membranes are vulnerable to radical attacks during PEM-FC operations, causing depolymerisation, holes, short circuits, and reduced lifespan. This report examines how cerium oxide-based radical scavengers protect PFSA ionomers and enhance membrane longevity. Syensqo is developing Aquivion® RSP, a cerium oxide-based additive, to minimise mobility and prevent PEM degradation. Preliminary results show superior durability and low cerium release with Aquivion® RSP

Public Abstract: Decarbonising heavy-duty vehicles like trucks and buses is essential for tackling climate change. Hydrogen fuel cells are a promising solution, as they can power these vehicles over long distances with quick refuelling and zero emissions. Today, most fuel cells use special membranes made from fluorinated chemicals, which work well but are expensive, have some safety and environmental concerns, and may face stricter regulations in the future. To address these issues, the HIGHLANDER project has developed new, fluorine-free membranes made from hydrocarbon materials. These new membranes show strong potential: they can operate at higher temperatures, are made from more sustainable materials, and may be safer and cheaper to produce. Early tests have shown good performance and durability, but some challenges remain, such as making the membranes strong enough for real-world use and ensuring they work well in all conditions. Ongoing research is focused on improving these new membranes and adapting fuel cell designs to use them effectively. If successful, these advances could make hydrogen fuel cells an even better option for clean, reliable transport in the future.