Sorption thermal energy storage is a promising technology for effectively utilizing renewable energy, industrial waste heat and off-peak electricity owing to its remarkable advantages of a high energy storage density and achievable long-term energy preservation with negligible heat loss. It is the latest thermal energy storage technology in recent decades and remains in the laboratory investigation stage. The objective of this review is to summarize the state of the art of sorption thermal energy storage technology, note the unresolved technology bottlenecks, and give investigation perspectives for commercial large-scale applications. First, the characteristics of sorption materials, including physical adsorbents, chemical sorbents, liquid absorbents and composite sorbents, are summarized and evaluated. Then, the basic open and closed sorption cycles and other ongoing improved working cycles are described and compared. Next, advanced reactor designs of open sorption, solid adsorption and liquid absorption systems are summarized, such as honeycomb-shaped reactors and heat exchangers with extended surface areas. Finally, the operation performances of typical open and closed prototypes are reviewed and analysed in terms of input issues, output performance and performance parameters. Based on the research achievements, the future challenges of sorption thermal energy sorption technology include improving the heat and mass transfer of reactors, discovering or synthesizing cheap novel porous materials, providing synthesis guidelines for obtaining composite sorbents with desired characteristics, uncovering the mechanisms for the different change trends of the output temperature in the discharging process and establishing evaluation criteria for the operation performance.

吸附式热能存储技术因其高能量存储密度和可实现的长期能量保存而热量损失可忽略不计的显着优势而成为有效利用可再生能源，工业废热和非高峰电力的有前途的技术。它是近几十年来的最新热能存储技术，目前仍处于实验室研究阶段。这篇综述的目的是总结吸附式热能存储技术的现状，指出尚未解决的技术瓶颈，并为商业大规模应用提供研究前景。首先，总结并评估了包括物理吸附剂，化学吸附剂，液体吸收剂和复合吸附剂在内的吸附材料的特性。然后，描述并比较了基本的打开和关闭吸附循环以及其他正在进行的改进的工作循环。接下来，总结了开放式吸附，固体吸附和液体吸收系统的高级反应器设计，例如蜂窝状反应器和表面积扩大的热交换器。最后，根据输入问题，输出性能和性能参数对典型的开放式和封闭式样机的操作性能进行了审查和分析。根据研究成果，吸附热能吸附技术的未来挑战包括改善反应器的传热和传质，发现或合成廉价的新型多孔材料，为获得具有所需特性的复合吸附剂提供合成指导，