For the first time in the world, Chinese scientists have prepared single-layer graphene nanoribbons.
Oct 18,2024
Enray
(reporter zhang galencorrespondent jiao defang)On the 27th, the reporter learned from Tianjin University that the team of Professor Feng Wei of the university prepared single-layer graphene nanoribbons for the first time in the world by cutting single-walled carbon nanotubes with fluorine-containing radicals, and the international patent applied for was also recently authorized. This is the first time that Chinese scientists have obtained single-layer graphene nanoribbons through a one-step method. As a primary battery cathode material, the energy density can be improved compared with imported products.30%.
Fluorinated carbon is the solid-state cathode material with the highest theoretical energy density in the world. Feng Wei told reporters that western developed countries have always regarded the preparation of high-energy fluorocarbons as the core technology, and technology output and open exchange are strictly prohibited."At present, the widely used fluorocarbon materials in China mainly rely on foreign imports, which seriously restricts the scientific research and industrial development in related fields in China.”
However, due to its own structural limitations, the current international mainstream fluorinated carbon materials also have pain points.-- it is difficult to achieve“high energy density”and“High power density”Both.2008The Feng Wei team pioneered the development of new fluorinated carbon materials with unique structures to achieve energy density and power density.“double high”. After more than ten years of research, the team has subverted the existing covalent fluorocarbon structure based on the six-membered ring structure of graphene, and has taken the lead in developing structural fluorocarbon materials with high voltage and high capacity in the world. The energy density of this new material has been measured in the laboratory.2738Wh/kgHigher than similar foreign products30%Reach the international leading level. At the same time, it can work stably under the condition of super large discharge current. It is estimated that its cost can be greatly reduced compared to imported materials.“This marks a breakthrough in the decades-long technological blockade of developed countries.”Feng Wei said.
At present, the team has achieved stable small batch production of new fluorinated carbon materials.
zhuzhou jinrui specializing in the production of graphite furnace, sintering furnace, carbonization furnace equipment
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