Chlorine-substituted graphdiyne (Cl-GDY) is prepared through aG laser-Hay coupling reaction on the copper foil. Cl-GDYi se ndowed with au nique p-conjugated carbon skeleton with expanded pore sizei nt wo dimensions,h aving graphdiyne-like sp-and sp 2 -h ybridized carbon atoms.A s ar esult, the transfer tunnels for lithium (Li)i ons in the perpendicular direction of the molecular plane are enlarged. Moreover,b enefiting from the bottom-to-up fabrication procedure of graphdiyne and the strong chemical tailorability of the alkinyl-contained monomer,t he amount of substitutional chlorine atoms with appropriate electronegativity and atom sizei sh igh and evenly distributed on the as-prepared carbon framework, whichw ill synergistically stabilizet he Li intercalated in the Cl-GDYf ramework, and thus generate more Li storage sites.P rofiting from the aboveu nique structure,C l-GDYs hows remarkable electrochemical properties in lithium ion half-cells.
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