摘要
In the pursuit of carbon neutrality,hydrogen(H_(2))is often hailed as the ideal fuel for fuel cell vehicles(FCVs)due to its zero-emission nature and high gravimetric energy density.However,its low volumetric density necessitates high-pressure on-board storage(up to 700 bar),which are costly and pose significant safety risks.To cope with these challenges,the U.S.Department of energy(DOE)has set ambitious targets for hydrogen storage systems,aiming for a gravimetric capacity of 6.5 wt%with a volumetric capacity of 50 g L^(-1).Porous crystals,exemplified by metal-organic frameworks(MOFs)[1,2],covalent organic frameworks(COFs),and hydrogen-bonded organic frameworks(HOFs)[3],have shown promise for hydrogen storage at 77 K with delivery at 160 K under significantly lower pressures(≤100 bar).
基金
financial support from the National Natural Science Foundation of China(Nos.22271189,92356301,and 21522105)
the Science and Technology Commission of Shanghai Municipality(Nos.21XD1402300,22QC1401500,21JC1401700,and 21DZ2260400)
the Double First-Class Initiative Fund of ShanghaiTech University(SYLDX0052022).
