Synthesis and Electronic Structure of Boron-Graphdiyne with an sp-Hybridized Carbon Skeleton and Its Application in Sodium Storage
Synthesis and Electronic Structure of Boron-Graphdiyne with an sp-Hybridized Carbon Skeleton and Its Application in Sodium Storage
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DOI：
10.1002/anie.201800453
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发表时间：
2018-04-03
影响因子：
16.6
通讯作者：
Li, Yuliang
中科院分区：
文献类型：
--
作者：
Wang, Ning;Li, Xiaodong;Li, Yuliang
硼-石墨炔（BGDY）具有独特的π共轭结构，由sp杂化碳骨架和均匀分布在二维分子平面上的硼杂原子组成。该材料具有优异的导电性、较低的带隙和良好的封装方式。值得注意的是，全sp-碳框架和缺电子硼中心的异常成键环境产生了对金属原子的亲和力，从而提供了额外的结合位点。此外，BGDY分子平面上扩大的分子孔也有利于金属离子在垂直方向上的转移。在钠离子电池中作为阳极的性能证明了全sp-碳结构和硼杂原子对BGDY性能的实际影响。
Boron-graphdiyne (BGDY), which has a unique pi-conjugated structure comprising an sp-hybridized carbon skeleton and evenlydistributed boron heteroatoms in a well-organized 2D molecular plane, is prepared through a bottom-up synthetic strategy. Excellent conductivity, a relatively low band gap and a packing mode of the planar BGDY are observed. Notably, the unusual bonding environment of the all sp-carbon framework and the electron-deficient boron centers generates affinity to metal atoms, and thus provides extra binding sites. Furthermore, the expanded molecule pores of the BGDY molecular plane can also facilitate the transfer of metal ions in the perpendicular direction. The practical effect of the all sp-carbon structure and boron heteroatoms on the properties of BGDY are demonstrated in its performance as the anode in sodium-ion batteries.