"Unraveling the Sodium Storage Properties and Mechanism of Cation-Defic" by Yan Zhong, Pengguo Wang et al.
Na-ion batteries (NIBs) are potential candidates for electrical energy storage systems owing to the naturally abundant sodium resources. In contrast to Li-ion batteries (LIBs), the anodes of NIBs suffer from the slow kinetics of sodiation because of larger ion radius, which deteriorates their performance. In this work, the cationic vacancies are introduced by a solvothermal method to produce cation-deficient Ti0.84□0.16O1.42F0.37(OH)0.21 with improved sodium storage performance, showing a charge capacity (215 mAh g-1, 0.1C) and remarkable long-term cyclic stability (the capacity retention ra...