Sino-US joint research lithium-sulfur battery was an important breakthrough

Recently, the United States Yale University and Southeast University in the chemical TOP Magazine Journal of the American Chemical Society on the publication of the paper: Through the new design of the cathode material, lithium-sulfur battery cycle life expectancy, and with super-cycle capacity retention rate, this Breakthrough will further promote the practical application of lithium-sulfur secondary batteries. The first author of this article is Dr. Fan Qi from the team of Professor Sun Yueming from Southeast University.

During the period of his visiting professor Wang Haidai's chemistry department at Yale University, Dr. Fan Qi from Southeast University's team led by Professor Sun Yueming introduced the concept of material-based ternary design into the construction of cathode materials for lithium-sulfur batteries. 1C (1 hour charge-discharge) Hundreds of cycles of capacity loss rate dropped to 0.9%. This is also the best reported circulation capacity retention so far.

Dr. Fan Qi pointed out in an interview: "For the battery research, in the past 1c, the control of circulation capacity loss rate of about 100% is only found in traditional cathode materials, which is the traditional cathode material although the energy density is relatively low , The price is relatively expensive, but still occupy the market dominance of the main one of our research shows that lithium-sulfur rechargeable batteries can be obtained after the optimization of the design to obtain similar performance.Considering the huge energy density advantages of lithium-sulfur battery (4- 6 times) and the cost price advantage, lithium-sulfur secondary batteries in this area will have a very broad prospect.

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