Atomic V- and Co-Modified Ketjen Black–Sulfur Composite for High-Performance Lithium–Sulfur Batteries

In the present study, we encapsulated sulfur with atomic vanadium (V)- and cobalt (Co)-modified Ketjen black (VCKBS) to hinder shuttle mechanism enhance redox kinetics in Li–S batteries. The synthesized composite provided plenty of interfacial active sites assured smooth electron transfer, which assisted attaining balance enhanced catalytic activity due Co adsorption ability mainly derived from V. Consequently, cells having an optimized composition presented alleviated effect, utilization conversion efficiency, showed stable cycling performance outstanding rate initial capacity 1329 mAh g–1, was maintained as 1249 g–1 after 100 cycles. Due impressive experimental specific capacities, system-level energies energy densities were also predicted using 1st 100th discharge capacities. Compared regular black-based cathodes, VCKBS cathodes 1342 568% improvement density based on respectively. This indicates that a facile manner are advantageous for higher loadings at electrolyte-depleted represent viable endeavor develop highly