A tiny chip may have solved one of clean energy’s biggest problems

Northwestern University researchers developed a "megalibrary" technology to find an alternative to iridium, a rare metal essential for clean hydrogen production. The chip contains 156 million nanoparticles, enabling rapid screening of metal combinations. In one afternoon, they discovered a four-metal catalyst matching iridium's performance at one-sixteenth the cost. The new catalyst remained stable for over 1,000 hours in harsh conditions, potentially enabling affordable green hydrogen. This breakthrough showcases how megalibrary technology could revolutionize materials discovery across industries.