“…Porous carbons are widely used to stabilize electrochemically active materials such as sulfur for lithium-sulfur batteries. For Li-I 2 batteries, porous carbon is widely used as a host to stabilize iodine while improving the electron conductivity of the entire electrode, , including carbon nanotubes, , graphene, , carbon fiber cloth, − three-dimensional (3D) carbon foam, and hollow carbon spheres. , Heteroatoms such as nitrogen in carbon have been shown to enhance the adsorption of iodine because of the surface charge delocalization effect. ,,, Polymers have also been used to capture iodine for further improving cycling stability. ,− For example, biosafe and cost-effective polyvinylpyrrolidone (PVP) has been used to effectively complex iodine. , Furthermore, the architecture of the host materials also plays an important role in the transport of iodine . 3D freestanding porous carbon is an ideal host for stabilizing iodine, such as carbon fiber cloth (CFC). ,,, …”