Confining Acetonitrile-I2 Complexes via Fe Single-Atom Sites for Rapid and Reversible Iodine Redox Kinetics at −40°C

Key Points

• This research aims to enhance iodine redox kinetics at low temperatures using Fe single-atom sites.
• Developed atomically dispersed Fe sites on porous carbon (Fe-PC) for iodine interaction.
• Investigated the performance of Fe-PC in facilitating rapid I2 charge-transfer under −40°C conditions.
• Assessed the reversible nature of iodine redox kinetics using the Fe-PC complex.
• Demonstrated rapid iodine redox kinetics at −40°C using Fe-PC.
• Achieved effective confinement of acetonitrile-I2 complexes, enhancing charge transfer rates.
• Reversible iodine redox behavior was confirmed during low-temperature cycles.