Science Daily February 1, 2019
Sodium ion batteries meet the demand for large-scale energy storage. By investing ~4300 candidates via a high-throughput computation, researchers in Japan have identified nanotube-type Na2V3O7 as a cathode material because of its fast sodium diffusivity. High-rate performance was confirmed, showing ~65% capacity retention at a current density of 10C at room temperature, despite the large particle size of >5 μm. But they found that Na2V3O7 underwent deterioration in the final charging stages, which limits the practical storage capacity to the half of theoretical one. In their future experiments, the researchers aim to focus on improving the performance of the material…read more. Open Access TECHNICAL ARTICLEÂ
A high-throughput computation for Na migration energies is conducted for about 4,300 compounds in the inorganic crystal structure database. Credit: NITech