Superior sodium-storage behavior of flexible anatase TiO2 promoted by oxygen vacancies

The miniaturization and rapid development of portable and wearable electronics require significant advances in new energy storage devices with high capacities and excellent mechanical properties. Along with flexible Li-ion batteries (LIBs), flexible Na-ion batteries (SIBs) are among the most promising power devices for portable and wearable electronics. Unfortunately, advances in the field of flexible SIBs have been relatively stagnant. In this...