S/N Co-Doped Ultrathin TiO₂ Nanoplates as an Anode Material for Advanced Sodium-Ion Hybrid Capacitors.

ABSTRACT: Anatase titanium dioxide (TiO₂) has emerged as a potential anode material for sodium-ion hybrid capacitors (SICs) in terms of its nontoxicity, high structure stability and cost-effectiveness. However, its inherent poor electrical conductivity and limited reversible capacity greatly hinder its practical application. Here, ultrathin TiO₂ nanoplates were synthesized utilizing a hydrothermal technique. The electrochemical kinetics and reversible capacity were significantly improved through sulfur and nitrogen co-doping combined with carbon coating (SN-TiO₂/C). Sulfur and nitrogen co-doping generated oxygen vacancies and introduced additional active sites within TiO₂, facilitating accelerated Na-ion diffusion and enhancing its reversible capacity. Fur

SUBMITTER: Li Y 

PROVIDER: S-EPMC11433928 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature