Inside Front Cover: Volume 2 Issue 4

Abstract

Inside Front Cover: The cover image designed by C. Guan et al. in doi:10.1002/idm2.12110 represents the direct ink writing (DIW) technology of metals and their compound catalysts (single atoms, alloys, compounds as well as heterostructures) for Li-S batteries. Metal-based catalysts stabilize the immobilization of lithium polysulfides and promotes the conversion efficiency. The 3D printed structure increases the mass loading of active materials, resulting in high volumetric power density and energy density.