Canadian scientists have claimed that the University of Waterloo in lithium-sulfur (Li-S) battery technology has made a major breakthrough. With an ultra-thin nano-materials, they developed a more durable sulfur cathode. The technology is expected to create a lighter, better performance, cheaper electric car batteries. Related papers published in the recent issue of “Nature Communications” magazine.
According to physicist organizational networks reported January 13, this new material by the University of Waterloo chemistry professor Linda Nazar and her research team found that sulfur can maintain the stability of the cathode, to overcome the current manufacturing lithium-sulfur batteries the main obstacle facing. In theory, the same weight of lithium-sulfur batteries currently only able to provide three times the ordinary life of lithium-ion batteries, but also cheaper than lithium-ion batteries for electric vehicles. Professor Nazar is also director of the Solid State Energy Research Center of Canada, she said, this is a major step forward, so that a high-performance lithium-sulfur battery in sight.
Nazar’s research team on lithium-sulfur battery technology, originally known in 2009. At the time, they are published in the “Nature” magazine paper, proved the feasibility of lithium-sulfur battery with nanomaterials. In theory, relative to the current lithium cobalt oxide in a lithium ion battery used as a cathode material, sulfur more competitive. Because the sulfur-rich materials, lightweight, and inexpensive. Unfortunately, since the sulfur dissolved in the electrolyte solution which will form a sulfide, sulfur cathode made after only a few weeks will be depleted, resulting in battery failure.
Nazar’s team initially thought porous carbon or graphene through trapping way polysulfides stabilized. But an unexpected twist to them, that is not the case, the answer is neither final nor porous carbon porous graphene, but metal oxides.