Transition　metal　dichalcogenides　(TMDs)　have　received　intensive　interests　in　lithium-ion　batteries　owing　to　their　unique　lithium-ion　storage　ability　when　evaluated　as　anode　materials.　In　the　present　work,　a　nanocomposite　of　WSe2/CMK-5　was　successfully　fabricated　via　a　nanocasting　route,　introducing　the　unique　structure　of　mesoporous　carbon　(CMK-5)　as　a　nanorecator.　Benefiting　from　a　synergetic　effect　of　WSe2　nanosheets　and　mesoporous　carbon,　the　WSe2/CMK-5　hybrid　electrode　exhibited　large　reversible　capacity,　high　rate　performance,　and　excellent　long-term　cycling　stability.　For　instance,　a　specific　capacity　of　490　mA　h　g-1　can　remain　even　after　600　cycles　at　a　current　density　of　0.5　A　g-1.　©　2018　American　Chemical　Society.