Modeling adsorption-based hydrogen storage in nanoporous activated carbon beds at moderate temperature and pressure

作者：Lijin Chen, Valeska P. Ting, Yuxuan Zhang, Shuai Deng, Shuangjun Li, Zhenyuan Yin, Fei Wang, Xiaolin Wang · 发表于：International Journal of Hydrogen Energy · 年份：2025 · DOI：10.1016/j.ijhydene.2025.03.373 · 被引用次数：11 · 研究领域：Hydrogen Storage and Materials、Ammonia Synthesis and Nitrogen Reduction、Membrane Separation and Gas Transport

This study explores the enhancement of hydrogen storage efficiency in four nanoporous activated carbon using a self-developed adsorption model. Results reveal that, at the macroscopic level, decreasing the temperature, and increasing the pressure, velocity, and bed porosity significantly enhance hydrogen adsorption capacity . At the microscopic level, material properties, including micropore and mesopore volumes and specific surface area are critical for influencing the hydrogen storage capacity. The findings indicate that increasing the micropore-to-total pore volume ratio (from 0.8392 to 0.886) and surface area (from 958 to 2280 m 2 /g) enhances storage efficiency (from 1.2 to 1.9 wt%) at 298 K, 9 MPa. Notably, AC-800 demonstrates superior hydrogen storage capacity (1.9 wt%) due to its well-developed micropores (0.94 cm 3 /g) enabling efficient H 2 adsorption, and its moderate mesopores (0.12 cm 3 /g) providing storage capacity and facilitating compression. This work underscores the need to optimize macro and micro-scale parameters to maximize hydrogen storage in activated carbon beds .