Sorption thermal battery is an effective thermal energy storage technology for solar energy utilization and waste heat recovery. However, the low thermal conductivity and packing density of loose particle adsorbents are the common drawbacks for realizing high energy-density and power-density sorption thermal battery. Herein, we propose a compression-induced molding method for preparing high-performance modular adsorbents with high thermal conductivity and packing density by compacting loose particle adsorbents with tunable packing densities and thicknesses. The experimental results showed that the thermal conductivity and packing density of modular adsorbents can be enhanced by 3 times and 2 times, respectively, when compared to that of particle adsorbents. The water adsorption rate can be also improved by this method at an optimized compression pressure of 10 MPa and thickness of 2 mm. Furthermore, we constructed a sorption thermal battery by employing the modular adsorbents to realizing high-efficient thermal charging/discharging processes. The experimental results demonstrate the maximum volumetric power density is as high as 145 kW/m³ and the maximum volumetric energy density up to 75 kWh/m³, which are 1.61 times and 1.27 times higher than those of pristine particle adsorbent, respectively. Therefore, it is verified that the sorption thermal battery with modular adsorbent is more powerful and compact than using conventional particle adsorbent.

吸附式热电池是一种有效的太阳能利用和余热回收的热能储存技术。然而，松散颗粒吸附剂的低热导率和堆积密度是实现高能量密度和功率密度吸附热电池的共同缺点。在此，我们提出了一种压缩诱导成型方法，通过压实具有可调堆积密度和厚度的松散颗粒吸附剂来制备具有高导热性和堆积密度的高性能模块化吸附剂。实验结果表明，与颗粒吸附剂相比，模块化吸附剂的热导率和堆积密度分别提高了3倍和2倍。在10 MPa的优化压缩压力和2 mm的厚度下，通过该方法也可以提高吸水率。此外，我们通过采用模块化吸附剂构建了吸附热电池，以实现高效的热充电/放电过程。实验结果表明最大体积功率密度高达145 kW/m³和最大体积能量密度高达 75 kWh/m ³，分别是原始颗粒吸附剂的 1.61 倍和 1.27 倍。因此，证实了采用模块化吸附剂的吸附热电池比使用传统颗粒吸附剂更强大和更紧凑。