The ENEA′s 2019–2021 Three-Year Research Project on Electrochemical Energy Storage

This work describes the research activities carried out by ENEA in the three-year period 2019–2021 as a part of the Electrochemical Storage project. The project was part of a larger and more integrated project for energy storage, itself contained in the Electric System Research program. Within the project, various research lines were carried out: From the development of materials for electrodes to the testing of electrolytes and separators, both for lithium and sodium-ion batteries, evaluation of the use of lithium metal batteries, and studying how to give a second life to used batteries. Dissemination of the results was an integral part of the program. The reasons that have been adduced to articulate the research plan and the main results obtained are reviewed in this concept.