• High-performance sodium-ion batteries could be made with Japan’s phosphorus addition work Sodium-ion batteries can operate on the same principle as lithium-ion batteries. • Researchers in Japan have made a significant achievement that could help unlock safer, high-performance sodium-ion batteries. • The team found that adding phosphorus to sodium-yttrium-silicate glasses can help develop next-generation sodium-ion batteries. • The work significantly enhances their performance as solid electrolytes for next-generation sodium-ion batteries. • Researchers from Kogakuin University highlighted that the improvement comes from Na5RSi4O12 crystal phase (R = rare Earth elements), which can be used as a solid electrolyte material for all-solid-state sodium-ion batteries. • Crystal phase can be obtained as a glass ceramic The team revealed that the crystal phase can be obtained as a glass ceramic, and the addition of phosphorus (P) to the glass precursor dramatically expands the formation range of the Na5RSi4O12 phase.
Article Summaries:
- Japanese researchers at Kogakuin University have shown that adding phosphorus to sodium‑yttrium‑silicate glasses improves the performance of solid electrolytes for next‑generation sodium‑ion batteries. The phosphorus promotes the formation of a Na₅RSi₄O₁₂ crystal phase (R = rare‑earth element) in a glass‑ceramic, expanding the phase’s stability range. Structural analysis revealed that phosphorus integrates into the Si sites of the crystal without reducing ionic conductivity, while only slightly polymerizing the SiO₄‑PO₄ network. The study, published in Ceramics International, suggests that this approach could yield safer, high‑performance solid‑state sodium‑ion batteries with rapid charging and discharging capabilities.
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