The Attraction of Na-Ion Lies in Its Composition Rather Than Its Performance, Finds IDTechEx
BOSTON, May 31, 2023 /PRNewswire/ -- Na-ion is probably the most prominent metal-ion battery chemistry outside of Li-ion, working via the same 'rocking chair' (where the alkali-ion shuttles from a non-metal anode to a cathode during discharge and vice versa during charge) principle of reversible cation intercalation, at a positive and negative electrode. Materials can also be similar to Li-ion, with metal oxides often used as the cathode and carbon-based materials as the anode. However, the carbon cannot be in the form of graphite as the size of Na+ is too large for intercalation, and in reality, material choices may differ significantly compared to Li-ion chemistries.
- Materials can also be similar to Li-ion, with metal oxides often used as the cathode and carbon-based materials as the anode.
- The three main families of cathode materials are the layered metal-oxides, polyanionic compounds, and Prussian blue analogs (PBA).
- The great advantage of these compounds lies in their low molecular weight, which results in a high theoretical specific capacity.
- To find out more about this IDTechEx report, including downloadable sample pages, please visit www.IDTechEx.com/Sodium .