The Compound Of Graphyne And Its Application

Based on structures and properties of graphdyine(GDY),we were deeply discussed that the polymer was composited with GDY application of field effect transistor(FET)and heteroatom(sulfur atoms)doped GDY in application of lithium ion batteries,respectively.GDY were comprised with sp and sp~2 hybridized carbon atoms,which explained excellent conductivity and its natural semiconductor properties.This advantage make it widely used in the FET.GDY is composed of 18 carbon atoms,which porous structure and the introduction of acetylene result in lower atomic density and enhancing its natural porosity makes it more favorable for the storage of lithium ions.1.GDY is fully mixed in a new fluorinated polymer(P-o-Fluoro-P-alkoxyphenyl-(PFC))applying to the field effect transistor by the physical method.Because natural semiconductor properties of GDY,the electrochemical characteristic of GDY/PFC composite has a lot of improvement,including increasing the mobility of two orders of magnitude,diffusion length increased more than 20 times,and enhancing the on/off ratio of 3 orders of magnitude and so on.At the same time,we explored that the influence of different concentration and position on the semiconductor characteristics.2.Sulfuer(S)-doped GDY was prepared by heat treatment of GDY and organic sulfur source(dibenzyl disulfide)as electrode materials for lithium ion batteries.The doping mechanism and reaction process of S doped GDY were discussed systematically.At the same time,the measurement result of the XPS,Raman and FIR demonstrated that the three existing forms of sulfur in GDY.Compared with GDY,electrochemical performance S-doped GDY was improved,including large capacity,higher rate capacity and long cycle stability.The introduction of sulfur atoms can also provide more heteroatomic defects and electrochemical activity sites to promote the enhancement of electrochemical properties.