The new battery could work in all kinds of temperatures.
“Our material also compares well with the class of layered materials for cathodes: It provides roughly the same battery capacity and greater stability, which translates into longer life and higher cost-efficiency of the battery,” Fedotov went on. “Remarkably, even the theoretical predictions for the competing materials fall short of the practical performance of ours, and this is far from trivial because the theoretical potential is never fully realized.
“Higher energy storage capacity is just one of the advantages of this material. It also enables the cathode to operate at lower ambient temperatures, which is particularly relevant for Russia,” Fedotov said. Semyon Shraer, a research intern at Skoltech and the lead author of the paper, further specified how the team went about discovering the new and improved battery formulation: “In fact, the battery community tends to proceed with the search for new materials either empirically — by trial and error — or with high-throughput studies that test vast arrays of materials. We approach it differently and favor rational solid-state chemistry design.
“Theoretical considerations led us to the basic formula for a material that might provide high energy storage capacity,” he continued. “We then needed to determine which crystal structure would unlock that potential. The one we chose is known as the KTP-type framework, and it comes from nonlinear optics — it’s not really common for battery engineering. After careful thinking and theoritization, we realized that this particular compound with that particular crystal structure should work.
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