Air humidity assisted sorption thermal battery has attracted increasing interests throughout the world for its strong ability to capture atmospheric moisture and the related heating effects. However, the controllable stable output temperature is still unrealized, which hinders the application potential. Here we discover the phenomenon of “reaction wave” happening in the sorption reactor for the first time and accordingly build a “reaction wave” model which sheds light on the mechanism for receiving stable output and provides design criterion for obtaining stable output. To further increase the storage density of sorption thermal battery, we put forward a design strategy of “dual-reactor” and establish a 1.3 kWh proof-of-concept prototype, which is able to warm up air from 20 ^oC to 38.1 ^oC for 5.51 hours, and obtain a storage density of 240 kWh/m³ higher than that of previous publications. Therefore, “Reaction wave” model is expected to guide sorbent selection and reactor design.

空气湿度辅助吸附热电池以其强大的捕获大气水分的能力和相关的热效应而引起了全世界的关注。然而，可控的稳定输出温度仍未实现，这阻碍了其应用潜力。在这里，我们首次发现了吸附反应器中发生的“反应波”现象，因此建立了一个“反应波”模型，该模型阐明了接收稳定输出的机理，并提供了获得稳定输出的设计标准。为了进一步提高吸附式热电池的存储密度，我们提出了“双反应器”的设计策略，并建立了一个1.3 kWh的概念验证原型，该原型能够将空气从20 ^o C加热到38.1 oC ^。C保持5.51小时，其存储密度比以前的出版物高240 kWh / m ³。因此，“反应波”模型有望指导吸附剂的选择和反应器设计。