Researchers at University of Waterloo, Canada May 18 said they made more than a traditional large capacity lithium battery 3 times the lithium-sulfur battery prototype. The date of the relevant research published in the “natural materials” online magazine.
Lithium-sulfur batteries have a very broad application prospects, chemists have therefore conducted the study over the past 20 years. Sulfur and lithium is considered the most ideal material for a battery, these two chemicals in combination can not only provide high energy density, stability, security and better life also. In addition, the cost, the price of sulfur is also far lower than current lithium batteries are widely used in the other materials.
However, the manufacture of cathode battery problems has been a major problem of people, partly responsible for the charge and discharge and release of electronic storage, in which reversible electrochemical reaction in order to achieve a higher current, which must be similar to the sulfur and carbon Such a conductor in close contact, and after a very effective way to no.
University of Waterloo professor lida.nazer research team led by technology through the nano-carbon and sulfur close integration. They used in the experiment is known as a porous carbon mesoporous carbon material. In the nano-level, this type of carbon in the pore size and pore volume is very consistent. Through nano-technology, the group will produce a hollow carbon tubes, each 6.5 nanometer thick, 3-4 nano-aperture. Sulfur may be due to heating and melting, when the exposure to carbon nanotubes after they are inhaled and solidification contraction for sulfur nanofibers. Through electron microscopy studies on the perfusion of the carbon nanotubes have sulfur profile inspection found that in all of the aperture in both full of sulfur, carbon and sulfur to achieve a perfect combination.
Nazarbayev said that by such a composite material made of battery power by up to 80% of the theoretical value, but also in maintaining a lower cost, good stability and a better circulation of the premise, its energy density than traditional lithium - transition metal oxide cathode of the battery into the high-3 times. This porous carbon materials “sucked up” technology to other composite material also provides a new way. Study in the future they will also further improve the structure of such a cathode material and performance.
Lithium-sulfur batteries have a very broad application prospects, chemists have therefore conducted the study over the past 20 years. Sulfur and lithium is considered the most ideal material for a battery, these two chemicals in combination can not only provide high energy density, stability, security and better life also. In addition, the cost, the price of sulfur is also far lower than current lithium batteries are widely used in the other materials.
However, the manufacture of cathode battery problems has been a major problem of people, partly responsible for the charge and discharge and release of electronic storage, in which reversible electrochemical reaction in order to achieve a higher current, which must be similar to the sulfur and carbon Such a conductor in close contact, and after a very effective way to no.
University of Waterloo professor lida.nazer research team led by technology through the nano-carbon and sulfur close integration. They used in the experiment is known as a porous carbon mesoporous carbon material. In the nano-level, this type of carbon in the pore size and pore volume is very consistent. Through nano-technology, the group will produce a hollow carbon tubes, each 6.5 nanometer thick, 3-4 nano-aperture. Sulfur may be due to heating and melting, when the exposure to carbon nanotubes after they are inhaled and solidification contraction for sulfur nanofibers. Through electron microscopy studies on the perfusion of the carbon nanotubes have sulfur profile inspection found that in all of the aperture in both full of sulfur, carbon and sulfur to achieve a perfect combination.
Nazarbayev said that by such a composite material made of battery power by up to 80% of the theoretical value, but also in maintaining a lower cost, good stability and a better circulation of the premise, its energy density than traditional lithium - transition metal oxide cathode of the battery into the high-3 times. This porous carbon materials “sucked up” technology to other composite material also provides a new way. Study in the future they will also further improve the structure of such a cathode material and performance.
