COF containing π-conjugation and precise nitrogen modified cathode enables high-performance lithium–sulfur battery

The LSB with TPE-TPP-COF/S cathode displays stable cycling performance, even at high sulfur loading (80%). In addition, TPE-TPP-COF/S cell has high rate performance, with a discharge specific capacity of 517.9 mA h g −1 even at a rate of 2C.