According to foreign media reports, the US Department of Energy (DOE) Brookhaven National Laboratory (Brookhaven National Laboratory) has designed a new organic cathode material for lithium batteries. The material uses sulfur as the core, compared with the traditional cathode material in lithium batteries, the energy density is higher, more cost-effective and more environmentally friendly.
Daily necessities such as smartphones and electric cars require lithium batteries to provide energy, and as the demand for such products continues to grow, scientists have been studying how to optimize cathode materials to improve the overall performance of lithium battery systems.
In addition to solving the energy challenges facing battery systems, scientists at Brookhaven National Laboratory are also studying the material design of sustainable batteries. In order to find sustainable cathode materials that provide high energy density, the scientists chose a safe and abundant element-sulfur.
Scientists at the National Synchrotron Light Source Division II (NSLS-II) of the Brooke Haven Science User Facilities Office of the US Department of Energy said: "Sulfur can form many bonds, that is, it can capture more lithium, thereby enhancing energy density. And sulfur is also more important than cathode materials. The traditional elements of light are light, which allows electric vehicles to have a longer cruising range. "
When the researchers designed the new cathode material, they chose an organic disulfide compound composed of carbon, hydrogen, sulfur, and oxygen instead of heavy metals in traditional lithium batteries, which are not very environmentally friendly. But although sulfur batteries are safer and have higher energy density, they also face other challenges.
Shadike said: "When the battery is charged and discharged, sulfur will become a bad compound, dissolved in the electrolyte, and diffused throughout the battery, causing adverse reactions. We designed a cathode material that allows sulfur atoms Attached to an organic pillar to stabilize the sulfur. "
The researchers said that the study could improve the performance of high-performance lithium batteries, which use sulfur-based cathode materials.
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