Realizing outstanding electrochemical performance with Na₃V₂(PO₄)₂F₃ modified with an ionic liquid for sodium-ion batteries.

ABSTRACT: Na₃V₂(PO₄)₂F₃ is a typical NASICON structure with a high voltage plateau and capacity. Nevertheless, its applications are limited due to its low conductivity and poor rate performance. In this study, nitrogen-boron co-doped carbon-coated Na₃V₂(PO₄)₂F₃ (NVPF-CNB) was prepared by a simple sol-gel method using an ionic liquid (1-vinyl-3-methyl imidazole tetrafluoroborate) as a source of nitrogen and boron for the first time. The morphology and electrochemical properties of NVPF-CNB composites were investigated. The results show that a nitrogen-boron co-doped carbon layer could increase the electron and ion diffusion rate, reduce internal resistance, and help alleviate particle agglome

SUBMITTER: Yu X 

PROVIDER: S-EPMC9092440 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature