3.7V Lithium Polymer Battery

　　Enabling sodium-sulfur 3.7V Lithium Polymer Batteryto be used in large-scale energy storage systems

　　According to foreign media reports, researchers at the University of Wollongong in Australia have made a nanomaterial that can serve as the cathode of room temperature sodium-sulfur batteries, allowing sodium-sulfur 3.7V Lithium Polymer Batteryto be used for large-scale energy storage.

　　Room-temperature sodium-sulfur 3.7V Lithium Polymer Batteryare well suited for next-generation energy storage applications, which are increasingly in demand. Room-temperature sodium-sulfur 3.7V Lithium Polymer Batterywith high energy density and long cycle life will provide low-cost, competitive technology for large-scale stationary energy storage systems, thereby promoting the transition to a renewable energy society.

　　However, current room temperature sodium-sulfur 3.7V Lithium Polymer Batteryhave problems with rapid capacity fading and low reversible capacity. Therefore, researchers developed a nanomaterial that overcame the above problems by implanting nickel sulfide nanocrystals in nitrogen-doped porous carbon nanotubes, and this material showed excellent performance when used as a cathode for sodium-sulfur batteries. Excellent performance.

　　Dr. Yunxiao Wang, the leader of the research, said: "At present, the actual energy density of sodium-sulfur 3.7V Lithium Polymer Batteryis far from the theoretical value. The practical application is mainly hindered by the sulfur cathode, because the sulfur cathode is insulating, the redox reaction is slow, and the reaction intermediates will dissolve and migration.”

　　The research team experimented with a variety of different materials before achieving the breakthrough, and the new nanomaterial not only has superior performance, but is also suitable for mass production and commercialization.

　　Zichao Yan, a doctoral candidate, said: "We tried multiple carbon hosts and finally found that nitrogen-doped porous carbon nanotubes implanted with nickel sulfide nanocrystals are a multifunctional sulfur host. We found that the carbon backbone within the host can provide shorter The ion diffusion path and fast ion transfer speed. The doped nitrogen sites and the polar surface of nickel sulfide can improve the adsorption capacity of polysulfides and provide strong catalytic activity for the oxidation of polysulfides, indicating that sodium-sulfur 3.7V Lithium Polymer Batterycan It has longer cycle life, high performance, and can be charged and discharged quickly.”

　　The next step, the researchers say, is to scale up production of the material, move sodium-sulfur 3.7V Lithium Polymer Batteryfrom the laboratory to industry, and put the battery system into practical applications.

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