Deep eutectic solvents (DESs) are emerging as novel green solvents for the processes of mass transport and heat transfer, in which the viscosity of DES is important for its industrial...

Electrocatalytic N2 reduction reaction (NRR) to ammonia (NH3) driven by intermittent renewable electricity under ambient conditions offers an alternative to the energy-intensive Haber−Bosch process. However, as a distinct core of...

The outstanding advantages of lithium−sulfur (Li− S) batteries have made them a potential energy storage device. However, shuttle effect is one of the main problems that restrict the commercial application of Li−S batteries. Apart from it, accelerating the dissociation of Li 2 S to LiS and Li + is also very important to achieve high Coulombic efficiency. Recently, it has been found that metal atoms exhibit strong interactions with lithium polysulfides (Li 2 S x ), which can be used as single-atom catalysts by embedding in the matrix. Covalent organic framework (COF) materials have porous structures and large surface area, which can anchor Li 2 S x by introducing active sites. In this study, we constructed metal phthalocyanine COFs (MPc-COFs, M = Ti, V, Mn, Cu, and Zn) as the cathode, which combined the advantages of metal atoms and COFs. The adsorption and catalysis performance of Li 2 S x species were investigated by MPc-COF cathode using density functional theory. The results show that the strong adsorption capacity of TiPc-COF and VPc-COF and the formation of axial complexes make them unfavorable for Li−S batteries. MnPc-COFs show excellent conductivity and sulfur fixation capacity, which also have a lower energy barrier in the catalytic oxidation of Li 2 S. This work has a guiding significance in the design of catalytic electrodes for Li−S batteries.