A　pyridyl-functionalized　mesoporous　graphene　is　developed　to　accommodate　sulfur　for　Al-S　batteries,　which　can　significantly　reduce　the　voltage　hysteresis　to　similar　to　0.43　V.　The　reaction　kinetics　of　the　Al-S　battery　are　accelerated　by　the　catalyst-free　carbon　host,　ascribed　to　both　the　mesoporous　graphene　structure　and　the　covalently　functionalized　pyridyl　groups.