Cover Picture: Chainmail Catalyst of Fe 3 O 4 @C/CNTO‐Modified Celgard Separator with Low Metal Loading for High‐Performance Lithium–Sulfur Batteries (13/2020)

The cover picture shows that the chainmail catalyst of Fe3O4@C/CNTO (CNTO=oxidized carbon nanotubes) with low metal loading was innovatively constructed and applied into the coating layer of a Celgard separator for Li-S battery. Fe3O4 serves as the active site to promote the interconversion of lithium polysulfides; the carbon-shell-encapsulated Fe3O4 leads to an integrated 3D architecture with the CNTO support to provide a continuous pathway for facile electron transport. Benefiting from the catalytic and conductive composite interface, the battery with the Fe3O4@C/CNTO-modified separator delivers a satisfactory specific capacity and excellent stability. Cover picture designed by Dongfang Niu. More information can be found in the Full Paper by Dongfang Niu et al. (DOI: 10.1002/slct.202000366)