Researchers at the Tokyo University of Science have experimentally demonstrated that sodium-ion batteries (SIBs) possess a higher intrinsic charging speed than standard lithium-ion batteries (LIBs).
The study provides quantitative evidence that hard carbon (HC) anodes allow for faster ion insertion, suggesting SIBs are suitable for high-power applications, such as EVs, rather than serving merely as a cost-effective alternative.
The effectiveness of SIBs relies on the negative electrode material known as hard carbon.
This porous, low-crystalline form of carbon is capable of storing significant amounts of sodium, allowing SIBs to achieve energy densities similar to commercial LIBs.