Tuning the Mn-based NASICON cathodes: A perspective on stabilizing high working voltage for sustainable sodium-ion batteries AITranslate

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Basic Information:

DOI：10.23919/CHAIN.2025.000019

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Citation Information:

Manganese-based NASICON materials are promising cathodes for sodium-ion batteries owing to their open three-dimensional framework and high Na⁺ mobility. However, their cycling performance is hindered by Jahn–Teller distortions and anti-site defects that destabilize the lattice. Recent studies show that rational electronic structure and defect engineering can effectively address these challenges. High-valent cation doping, such as Ti⁴⁺ or Zr⁴⁺, reduces lattice strain and stabilizes Mn redox reactions, while controlled synthesis suppresses Mn–Na anti-site defects and enhances Na⁺ transport. Furthermore, partial anion substitution with fluorophosphate or silicate units strengthens Mn–O bonding and increases operating voltage. Integrating these strategies enables improved structural stability and long-term reversibility, offering a feasible pathway toward durable, high-energy sodium-ion batteries for large-scale energy storage.