A noncarbonaceous material (titanium nitride, TiN) with well-defined multiscale porous architecture is easily developed by multiscale phase separation and applied as a sulfur host for lithium–sulfur batteries, as described by Jinwoo Lee and co-workers in article number 1806547. The synergistic effect between the unique porous architecture and surface chemical properties of TiN enables ultrastable, high-rate lithium–sulfur batteries.