Lithium　metal　anodes　(LMAs)　are　considered　as　the　promising　alternatives　for　next-generation　high　energy　density　batteries,　but　are　still　hampered　by　the　severe　growth　of　uncontrollable　lithium　dendrites.　The　growth　of　lithium　dendrites　induces　poor　cycling　lifespan　and　serious　safety　concerns,　dragging　lithium　metal　batteries　out　of　practical　applications.　We　designed　a　bilayer　carbon-based　structure　covered　with　Co/C　nanosheets　and　vertical　graphene　sheets　(VGS).　The　enormous　specific　surface　area　and　uniformly　distributed　Co　nanoparticles　of　the　CC@Co/C-VGS　host　are　derived　from　its　unique　design,　which　can　reduce　local　current　density　and　nucleation　overpotential,　resulting　in　a　dendrite-free　morphology　and　exceptional　cycling　stability.　Symmetric　cells　exhibit　over　400　cycles　(800　h)　at　a　high　current　density/capacity　of　10　mA　cm(-2)/10　mA　h　cm(-2).　Full　cells　using　LiFePO4　as　the　cathode　have　an　enhanced　rate　capability　and　a　prolonged　lifespan,　reaching　90　mA　h　g(-1)　after　1000　cycles　at　2　C　with　73.5%　capacity　retention.　This　unique　design　sheds　light　on　developing　high-performance　LMAs.