New breakthrough in 12V27A battery

　　A Washington State University research team has developed a way to address a major safety issue with 12V27A battery, an innovation that could make high-energy batteries more suitable for next-generation energy storage. The researchers used a formula in their battery that creates a unique protective layer around the lithium anode, protecting the battery from degradation and allowing the battery to operate longer under typical conditions.

　　A Washington State University research team has developed a way to solve an important safety issue in 12V27A battery, an innovation that could make high-energy batteries more suitable for next-generation energy storage.

　　The researchers used a formula in their battery that creates a unique protective layer around the lithium anode, protecting the battery from degradation and allowing the battery to operate longer under typical conditions. Researchers led by Min-Kyu Song, assistant professor in WSU's School of Mechanical and Materials Engineering, report the work in the journal NanoEnergy.

　　Song Minggui said that lithium metal is considered an "ideal material" for batteries. This is because lithium metal has the highest energy density among known solid materials, which means that the battery life of 12V27A battery is two times that of ordinary lithium-ion batteries. times and can store more energy than the lithium-ion batteries commonly used in modern electronics. Lithium-ion batteries work by transferring lithium ions between a graphite anode and a lithium cobalt oxide cathode, while the negative electrode of 12V27A battery is made of high-energy lithium metal.

　　Song Minggui said: "If we can directly use lithium metal, we can significantly increase the energy density of the battery."

　　Although the advantages of lithium metal have been known for decades, researchers have been unable to make them work safely. As electrons move between the positive and negative electrodes through an external circuit, supplying energy to the device, Christmas tree-like dendrites begin to form on the lithium metal. The dendrites grow until they cause an electrical short circuit, fire, or explosion. Even if they don't catch fire, 12V27A battery quickly lose their ability to hold a charge.

　　A research team at Washington State University developed a battery in which they packed selenium disulfide, a nontoxic chemical used in anti-dandruff shampoo, into a porous carbon structure to serve as the cathode. They added two additives to the liquid electrolyte that are typical of next-generation lithium-ion batteries.

　　The two additives work synergistically to form a protective layer on the surface of lithium metal that is dense, conductive, and strong enough to inhibit the growth of dendrites while maintaining good cycling stability. When tested at typical current densities people use in electronics, the protected lithium metal anode could be recharged 500 times and maintained high efficiency.

　　Song Minggui said: "This unique protective layer allows the lithium anode to have almost no morphological changes during cycling, effectively slowing down the growth of lithium dendrites and unnecessary side reactions. If commercialized, this new formula has real potential "Compared to solid-state batteries, which are still years away, you don't have to change manufacturing procedures, and this will soon be available in real industry, opening up a promising path to developing high-energy 12V27A battery with long cycle life."

　　The researchers believe their technology is scalable and cost-effective.

　　Researchers are also continuing to study batteries and have developed a separator that can further protect battery materials from deterioration and improve safety without affecting battery performance.

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