The National Agency for New Technologies, Energy and Sustainable Economic Development ENEA has printed lithium-ion and sodium batteries for the first time using the "rotogravure" technique, which is widely used in the packaging industry and in the printing of newspapers, magazines and currency. Some of the results of these applications have been published in the journal Batteries and could pave the way for cheaper and more sustainable battery production through reduced material and energy consumption. In fact, this technique combines high productivity with high print quality, which is ideal for the production of small rechargeable batteries for portable and wearable electronics. The work was funded by Electric System Research 2019-2021 and 2022-2024 and Mission Innovation, with new funding also planned in the three-year Electric System Research Plan 2025-2027. "The process is particularly useful for making thin, uniform functional layers over large surfaces, as well as for the study of new materials, where the deposition method is as crucial as the material itself," explains study coordinator Maria Montanino, a researcher at the ENEA Technologies and Devices for Electrochemical Storage Laboratory of the Energy Technologies and Renewable Sources Department.