Electrolysis vs Fuel Cells: Different Platinum Roles
Why platinum demand cannot be estimated from 'hydrogen technology' as one category.
What this topic covers
Why platinum demand cannot be estimated from 'hydrogen technology' as one category.
Core energy-system ideas
PEM fuel cells use platinum-based catalysts at both electrochemical sides, though loading differs by electrode.
PEM electrolyzers use platinum mainly at the hydrogen-producing cathode and iridium mainly at the oxygen-producing anode.
Technology mix therefore changes both platinum and iridium demand.
Important tradeoffs
PGM demand should therefore be tracked by metal and electrode rather than as one combined number.
Material and performance evidence
Electrolyzer efficiency, durability, electricity source, water quality and manufacturing yield affect system value.
Lifecycle perspective
This site excludes electrolysis operating conditions, gas handling and equipment procedures.