Home – Home – Jornals – Chemistry for Sustainable Development 2021 number 3

Sodium-ion batteries (SIB) are the nearest alternative to lithium ion batteries (LIB) for stationary energy storage devices. However, at the moment, SIB are inferior to LIB in energy density due to the lower efficiency of sodium-containing electrode materials, which encourages the emergence of new developments in this field. The review provides examples of some promising sodium-containing cathode materials obtained by mechanochemically assisted solid-state synthesis. It is shown that this approach is an energy- and eco-efficient method for the synthesis of single-phase, nanostructured cathode materials. An increase in their electron conductivity is achieved through surface modification with an electrically conductive carbon at the stage of synthesis. A complex of modern physicochemical methods was used to study their crystal and local structure, morphology, and electrochemical properties during cycling in both Na and Li electrochemical cells. The specific energy was compared with that of the known lithium-containing cathode materials.