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1Superhydrophobic Flexible Supercapacitors Formed by Integrating Hydrogel with Functional Carbon Nanomaterials显示文摘With the rapid development of the wearable electronics,the flexible supercapacitor with high energy density has attracted more and more attentions.From the viewpoint of outdoor and underwater application,this research tried to impart the superhydrophobicity to the flexible supercapacitors.The polyvinyl alcohol/HN0_(3) hydrogel was utilized as the electrolyte,which could achieve self-healing capability without the freezing/thawing process.Both microscale graphene and nanoscale carbon nanotubes were utilized as the electrode materials.After surface modification,the hydrophobic suspension composed of graphene and carbon nanotubes was sprayed onto the two sides of hydrogel electrolyte to construct superhydrophobic electrode.Hence,the superhydrophobicity endows the supercapacitor with outstanding self-cleaning performance.The all-in-one structure endows the supercapacitor with improved capacitive ability,outstanding flexibility,good anti-abrasion property,and reliable self-healing capability.The combination of superhydro-phobicity and flexible energy storage might have a broad application for the outdoor and underwater wearable electronics applications.Peng Wang Ximin Zhang Wei Duan Wei Teng Yibing Liu Qing Xie 2021Chinese Journal of Chemistry2021,39,5:4
2Crystal Structure and Theoretical Energy Gap of 2-(2-((4-(Pyridin-2-yl)pyrimidin-2-yl)disulfanyl)pyrimidin-4-yl)pyridinium Hexafluorophosphate显示文摘The crystal structure of 2-(2-((4-(pyridin-2-yl)pyrimidin-2-yl)disulfanyl)pyrimidin-4-yl)pyridinium hexafluorophosphate was obtained by X-ray single-crystal diffraction. This molecule crystallizes in monoclinic P2/c space group with a=6.219(1), b=13.103(2), c=13.059(2) ?, β=97.567(2)°, Z=2, the final R=0.0525 and w R=0.1434. The title compound was prepared successfully from 1,2-bis(4-(pyridin-3-yl)pyrimidin-2-yl)disulfane(BPPD). TD-DFT computational studies on energy gaps and UV-Vis spectra of BPPD and the title compound have been carried out for comparisons. The resultant HOMO-LUMO gap of the BPPD compound is 4.45 e V, while that for the corresponding hexafluorophosphate salt is much smaller at 2.46 e V, which are in agreement with their UV-Vis absorptions.陶涛 赵煚珖 曹晖 2017Chinese Journal of Structural Chemistry2017,36,2:0
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