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- Title
Synthesis of Chlorine-Substituted Graphdiyne and Applications for Lithium-Ion Storage.
- Authors
Wang, Ning; He, Jianjiang; Tu, Zeyi; Yang, Ze; Zhao, Fuhua; Li, Xiaodong; Huang, Changshui; Wang, Kun; Jiu, Tonggang; Yi, Yuanping; Li, Yuliang
- Abstract
Chlorine-substituted graphdiyne (Cl-GDY) is prepared through a Glaser-Hay coupling reaction on the copper foil. Cl-GDY is endowed with a unique π-conjugated carbon skeleton with expanded pore size in two dimensions, having graphdiyne-like sp- and sp2- hybridized carbon atoms. As a result, the transfer tunnels for lithium (Li) ions in the perpendicular direction of the molecular plane are enlarged. Moreover, benefiting from the bottom-to-up fabrication procedure of graphdiyne and the strong chemical tailorability of the alkinyl-contained monomer, the amount of substitutional chlorine atoms with appropriate electronegativity and atom size is high and evenly distributed on the as-prepared carbon framework, which will synergistically stabilize the Li intercalated in the Cl-GDY framework, and thus generate more Li storage sites. Profiting from the above unique structure, Cl-GDY shows remarkable electrochemical properties in lithium ion half-cells.
- Subjects
LITHIUM ions; CHLORINE; COUPLING reactions (Chemistry); COPPER foil; ELECTRONEGATIVITY; STABILIZING agents
- Publication
Angewandte Chemie, 2017, Vol 129, Issue 36, p10880
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201704779