Y. Liu et al. 48 investigated the hydrogen storage of Na-decorated single- and double-sided graphyne and their BN analogs. They found that the Na decorated double-sided graphyne and BN analog the hydrogen storage capacities could reach to 5.98 and 5.84 wt%, with the average adsorption energies of 0.25 and 0.17 eV/H2, respectively. W. Lei et al. 49 measured the hydrogen storage ability of oxygen doped boron nitride (BN) nanosheets with 2–6 atomic layers, synthesized by a facile sol-gel method and found that a storage capacity of 5.7 wt% under 5 MPa at room temperature and 89% of the stored hydrogen can be released when the hydrogen pressure is reduced to ambient conditions.