Improving Initial Capacity and Rate Capability of O3-Type Sodium-Ion Battery Layered Cathodes Using Sulfur Functionalized Triazole Additives

Key Points

• The study aims to enhance the capacity and rate capability of O3-type sodium-ion battery cathodes using triazole additives.
• Introduced 1H-1,2,4-triazole-3-thiol as an additive to layered cathodes.
• Compared the performance of triazole-thiol with sulfur-free triazole additives.
• Evaluated various concentrations of additives (3-10 wt%).
• Cells with triazole-thiol exhibited higher initial discharge capacity compared to sulfur-free triazole.
• At 5 wt% triazole-thiol, the cell maintained about 88.77 mAh g⁻¹ at 500 mA g⁻¹.
• Identified an optimal range for additive concentration, with performance declining at 10 wt% or higher.