Audi introduced its concept car Audi AI: Trail at the IAA 2019. The car is special because it combines futuristic design with autonomous driving, electric mobility.
The American physicists and engineers managed to develop technology of the three- dimensional press of lithium ion batteries of a food. The size of the received batteries makes about a millimeter, and the main scope of application developers call implanted devices. The electrodes of the new lithium ion battery turn out is thinner than a human hair while process of the press is completely automated and uses already existing models of three-dimensional printers. The main problem for the scientists was the selection of ink, a material used by the printer. Researchers managed to pick up substance which combines high electric conductivity with ability instantly to harden at contact with air and to remain liquid in the three dimensional printer. Besides, developers of the printing microbattery had to pick up the structure containing oxide of lithium. After the printer created electrodes and added lithium oxide the battery was closed by the case and filled in with electrolyte. Аll product is assembled comparable by the size to a grain of sand. Developers consider that their invention will help with development of implanted electronics. Now at the disposal of physicians already there are the technologies, allowing to create the subminiature devices for monitoring of biochemical indicators of blood or other parameters directly in an organism of patients. But for long-term work many perspective implanted devices didn’t have enough compact and reliable sources of a food. Lithium ion batteries printed on serial three-dimensional printers can change a situation to the best.
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