Laboratory research staff of the Chinese Academy of Sciences,Institute of Metal Research,Shenyang Materials Science (joint) using chemical vapor deposition method to prepare a three-dimensional network structure material graphene,in one fell swoop overcome graphene preparation difficulty,the preparation of graphene into high yield,the growth area.era.This breakthrough recently was named the 2011 top ten scientific progress.In order to uncover the mystery of graphene material veil,the reporter recently interviewed by the researchers of the Chinese Academy of metal.
According to reports,graphene is a novel carbon materials,single layer of carbon atoms tightly piled 2D honeycomb crystal structure.Graphene's excellent conductivity,RF transistors,ultra-sensitive sensor,flexible transparent conductive film,super and high conductivity composite materials,high-performance lithium-ion batteries and super capacitors show great potential for applications to become human beings has been know the intensity of the highest material.It can not only develop and manufacture thin as paper,ultra-light aircraft materials,super tough body armor,and even manufacturing the space elevator cable for the future and open doors.However,the complex manufacturing process to impede the widespread adoption of the graphene.
A large number of preparation of high-quality graphene and graphene assembled into a number of excellent nature of the specific structure of the material for comprehensive utilization of graphene to achieve commercial application of extremely important significance.According to the researchers,they are used in the preparation and application of three-dimensional material graphene macro metal foam as the growth substrate using chemical vapor deposition method for preparation of a bubble-shaped three-dimensional connectivity of the network structure of graphene materials.Such graphene materials a complete copy of the metal foam structure,graphene seamless way constitute a connected whole,with excellent charge transfer capability,850 m2 / g specific surface area,99.7% of the pore rate of 5 mg / cc of very low density.Experts in charge of the project,told reporters this method is controllable,easy to zoom,by changing the process conditions the average number of layers of regulation of graphene,graphene network specific surface area,density and electrical conductivity,and matrix curly They can be prepared by a 170 mm × 220 mm,and a larger area graphene foam.