Synthesis of Chlorine-Substituted Graphdiyne and Applications for Lithium-Ion Storage,Angewandte Chemie International Edition

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Synthesis of Chlorine-Substituted Graphdiyne and Applications for Lithium-Ion Storage
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-07-26 08:00:53 , DOI: 10.1002/anie.201704779
Ning Wang ₁ , Jianjiang He _{1,

2} , Zeyi Tu _{2,

3} , Ze Yang ₁ , Fuhua Zhao ₁ , Xiaodong Li _{1,

2} , Changshui Huang ₁ , Kun Wang ₁ , Tonggang Jiu ₁ , Yuanping Yi ₃ , Yuliang Li ₃

Affiliation

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.

中文翻译：

氯取代的Graphdiyne的合成及其在锂离子存储中的应用

氯取代的石墨二炔（Cl-GDY）是通过在铜箔上进行Glaser-Hay偶联反应制备的。Cl-GDY具有独特的π共轭碳骨架，具有二维扩大的孔径，具有类似石墨二炔的sp-和sp ²-杂化的碳原子。结果，在分子平面的垂直方向上的锂（Li）离子的传输隧道扩大了。此外，得益于石墨二炔的自下而上的制造程序以及炔醛类单体的强化学适应性，具有适当电负性和原子尺寸的取代氯原子数量很高，并且均匀地分布在所制备的碳骨架上，这将协同稳定嵌入在Cl-GDY框架中的Li，从而产生更多的Li储存位点。得益于上述独特的结构，Cl-GDY在锂离子半电池中显示出卓越的电化学性能。

更新日期：2017-07-28

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