材料科学
多孔性
杂原子
无定形固体
纳米技术
共价键
多孔介质
化学工程
戒指(化学)
结晶学
复合材料
化学
有机化学
工程类
作者
Xinle Li,Hongxia Wang,Hao Chen,Qi Zheng,Qiubo Zhang,Haiyan Mao,Yawei Liu,Song‐Liang Cai,Bing Sun,Chaochao Dun,Madeleine P. Gordon,Haimei Zheng,Jeffrey A. Reimer,Jeffrey J. Urban,Jim Ciston,Tianwei Tan,Emory M. Chan,Jian Zhang,Yi Liu
出处
期刊:Chem
[Elsevier]
日期:2020-04-01
卷期号:6 (4): 933-944
被引量:127
标识
DOI:10.1016/j.chempr.2020.01.011
摘要
Porous graphitic framework (PGF) is a two-dimensional (2D) material that has emerging energy applications. An archetype contains stacked 2D layers, the structure of which features a fully annulated aromatic skeleton with embedded heteroatoms and periodic pores. Due to the lack of a rational approach in establishing in-plane order under mild synthetic conditions, the structural integrity of PGF has remained elusive and ultimately limited its material performance. Here, we report the discovery of the unusual dynamic character of the C=N bonds in the aromatic pyrazine ring system under basic aqueous conditions, which enables the successful synthesis of a crystalline porous nitrogenous graphitic framework with remarkable in-plane order, as evidenced by powder X-ray diffraction studies and direct visualization using high-resolution transmission electron microscopy. The crystalline framework displays superior performance as a cathode material for lithium-ion batteries, outperforming the amorphous counterparts in terms of capacity and cycle stability.
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