As the hydrogen economy expands, studies have focused on the durability of proton-exchange membrane fuel cells (PEMFCs), revealing that cathode support degradation significantly impacts performance. Researchers have synthesized Ti3+-enriched N,C-codoped mixed-phase TiO2 nanoparticles as a durable cathode support for PEMFCs. These nanoparticles feature a reduced band gap, Ti3+ ions, oxygen vacancies, and Ti–X bonds (X = O, OH, N, C). The extent of doping was controlled by adjusting urea loading, enhancing metal–support interaction and confirming strong Pt–Ti bonding. Electrochemical tests demonstrated high oxygen reduction reaction activity and elevated durability, with a maximum power density decrease of only 4%, compared to 52% for Pt/C under the same conditions. These findings highlight TiO2’s potential as an electrocatalyst support, advancing the development of high-performance hydrogen fuel cells and promoting a hydrogen-based society.-Scientific Journal cover design by scapiens
[Scientific Journal cover design] Low-Thermal-Budget Fluorite-Structure Ferroelectrics for Future Electronic Device Applications
In article number 2100028, Jiyoung Kim, Si Joon Kim, and their team review key factors involved in developing fluorite-structure ferroelectrics
