Supraparticles for Bare‐Eye H2 Indication and Monitoring: Design, Working Principle, and Molecular Mobility (Adv. Funct. Mater. 22/2022)

Hydrogen Sensors In article number 2112379, Tanja Bauer, Karl Mandel, and co‐workers, demonstrate micrometer‐sized supraparticles for rapid real‐time monitoring and irreversible recording of H2 gas via a distinct, eye‐readable two‐step color change. Key for the functionality is a three‐phase system within the mesoporous, multi‐component supraparticles. The supraparticles are an attractive safety additive for leakage detection and localization in a H2 economy.