Ammonia (NH3) is an attractive hydrogen carrier with a high hydrogen storage (17.7 wt %) and carbon-free properties. (1−4) Compared with high-pressure hydrogen storage and transportation, liquid ammonia has advantages in cost and safety due to its mature infrastructure, making it an attractive option for safe and scalable hydrogen energy systems. (5,6) However, the high energy barrier associated with NH3 decomposition necessitates elevated reaction temperatures, which in turn leads to increased energy costs. (7,8) Therefore, developing NH3 decomposition systems that can operate under milder conditions, especially those driven by renewable energy, has become an important research direction. (9−12)

Ammonia (NH3) is an attractive hydrogen carrier with a high hydrogen storage (17.7 wt %) and carbon-free properties. (1−4) Compared with high-pressure hydrogen storage and transportation, liquid ammonia has advantages in cost and safety due to its mature infrastructure, making it an attractive option for safe and scalable hydrogen energy systems. (5,6) However, the high energy barrier associated with NH3 decomposition necessitates elevated reaction temperatures, which in turn leads to increased energy costs. (7,8) Therefore, developing NH3 decomposition systems that can operate under milder conditions, especially those driven by renewable energy, has become an important research direction. (9−12)