Li Yingjie, Li Yangyang, Lin Peng, Gu Jing, He Xiaojun, Yu Moxin, Wang Xiaoting, Liu Chuan, Li Chunxi
Anhui Key Lab of Coal Clean Conversion and Utilization, School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243032, P.R. China.
Anhui University of Technology, Maanshan 243032, P.R. China.
ACS Appl Mater Interfaces. 2020 Jul 22;12(29):33076-33082. doi: 10.1021/acsami.0c05741. Epub 2020 Jul 10.
The synthesis of new sp-hybridized carbon allotropes is a meaningful and challenging issue. Among the alkynyl carbon family, polyaromatic alkynes is a new branch to be developed. Herein, naphyne with a frame construction of alkynyl-linked naphthyl skeleton was efficiently fabricated through targeted mechanochemical reaction of calcium carbide and perchloronaphthalene. Its unique property and structure with wide alkynyl-naphthyl conjugation, multilayered nanofilm morphology, and high structural stability were corroborated by the comprehensive characterizations combined with computational simulations. Because of these structural features, the as-prepared naphyne can be applied as high-performance binder-free supercapacitor electrode with high specific capacitance (154 F g), robust long-term retention (92.1% after 5000 cycles), and prominent electrical conductivity (1490 S m). The successful architecture of naphyne approves the feasible synthesis of polyaromatic alkynes and further may provide a prospective approach for the development of alkynyl carbon materials.
新型sp杂化碳同素异形体的合成是一个有意义且具有挑战性的课题。在炔基碳家族中，多芳基炔烃是一个有待开发的新分支。在此，通过电石与全氯萘的定向机械化学反应，高效制备了具有炔基连接萘基骨架框架结构的萘炔。结合计算模拟的综合表征证实了其独特的性质和结构，具有广泛的炔基-萘基共轭、多层纳米膜形态和高结构稳定性。由于这些结构特征，所制备的萘炔可作为高性能无粘结剂超级电容器电极，具有高比电容（154 F g）、稳健的长期保持率（5000次循环后为92.1%）和突出的电导率（1490 S m）。萘炔的成功构建证明了多芳基炔烃合成的可行性，并进一步可能为炔基碳材料的开发提供一种前瞻性方法。
