Yingkai Guan

A Keggin-type polyoxometalate/COF thin separator for improving the performance of lithium–sulfur batteries† Separators have an important influence on the safety and performance of lithium–sulfur batteries (LSBs). However, traditional commercial polyolefin separators have problems of poor thermal stability and catalytic activity.

COF containing π-conjugation and precise nitrogen modified cathode enables high-performance lithium–sulfur battery† The covalent organic framework TPE-TPP-COF, containing π-conjugated aromatic tetraldehydes and nitrogen heteroatoms, was obtained under solvothermal conditions. Modification of the cathode with TPE-TPP-COF improved the performance of LSBs even at high sulfur loading (80%).

Modulating electronic structure of Ru by self-reconstructed MOF-NiFeOOH heterointerface for improved electrocatalytic water splitting Constructing efficient and stable electrocatalysts via electrochemical self-reconstruction is an effective strategy to achieve hydrogen evolution. Herein, as predicted by DFT, the construction of MOF-NiFeOOH heterointerface can effectively regulate the electronic environment of Ru and the adsorption energy of hydrogen and water.