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The transition to renewable energy has intensified the need for scalable and sustainable storage systems. While lithium‑ion batteries (LIBs) dominate the market, limited lithium resources and rising costs have accelerated interest in alternatives. Sodium‑ion batteries (SIBs) offer a promising low‑cost option due to sodium’s abundance and widespread availability, and they operate through a similar intercalation mechanism, allowing researchers to build on knowledge established from LIBs. These advantages, along with lower environmental impact and excellent thermal stability, make SIBs increasingly attractive for large‑scale energy storage and low‑range electric vehicles. Current research focuses on improving energy density, cycle stability, and ion‑transport kinetics to enhance competitiveness with LIBs.
This Collection brings together recent advances in sodium-based battery materials. Areas of interest include, but are not limited to, the following:
Innovations in anode and cathode materials
Electrolyte and cell‑design development
Advanced hard carbons
Sustainable materials
Artificial Intelligence-driven optimization
Recycling technologies
We welcome the submission of any paper related to sodium-ion batteries.
Communications Materials will consider original Articles, Reviews and Perspectives.
A key advancement in emerging sodium-ion batteries is the integration of gel polymer electrolytes, which offer improved performance, scalability, and safety. Here, the authors synthesize sodium-ion–conducting gel polymer electrolytes with phosphate linkers, achieving high electrochemical stability and cycle retention, as well as improved safety by significantly reducing flammability and preventing thermal runaway.