“…, amide, hydroxyl, acryl chloride, N, B, and S) 15–19 , and (ii) decoration with transition metal nanoparticles ( e.g. , Mn, Fe, Ni, Co, Pt, Pd, and Cu) 14,20–24 have been proposed to enhance hydrogen adsorption properties. Heteroatoms induce electron deficiency and enhance the polarity of carbon frameworks, leading to strong interaction between hydrogen and adsorbents.…”