Tuning Nitrogen-Doped Carbon Electrodes via Synthesis Temperature Adjustment to Improve Sodium- and Lithium-Ion Storage

Structural imperfections, heteroatom dopants, and the interconnected pore structure of carbon materials have a huge impact on their electrochemical performance in lithium-ion sodium-ion batteries due to specific ion transport dominant storage mechanism at surface defect sites. In this work, mesopore-enriched nitrogen-doped (NC) were produced with template-assisted chemical vapor deposition using calcium tartrate as template precursor acetonitrile nitrogen source. The states nitrogen, volume mesopores, areas regulated by adjusting synthesis temperature. testing NC synthesized 650, 750, 850 °C revealed best NC-650 sample, which was able deliver 182 mA·h·g−1 1158 current density 0.05 A·g−1. Our study shows role sites, including monovacancies nitrogen-terminated vacancies, binding accumulation sodium. results provide strategy for managing achieve high alkali-metal-ion capacity long cycling stability, thereby facilitating application materials.