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Research dossier · version 1 · updated Oct 30, 2026

Next-Generation Batteries: State of the Field (October 2026)

This dossier surveys solid-state electrolytes, lithium-metal and silicon anodes, sodium-ion chemistries and computational degradation work as of October 2026. Its key takeaway is that bulk ionic conductivity is no longer the main obstacle for sulfide electrolytes; interfaces, mechanics and stack pressure now dominate the remaining development effort, and most 2026 evidence is still at preprint stage.

3,533 words61 sources29 evidence-mapped claims2 benchmarks18 timeline events✓ citation-verified Oct 30, 2026

AI-assisted synthesis of the cited literature, independently fact-checked against its sources; not peer reviewed.

Contents

  1. Executive summary
  2. Background and core concepts
  3. Timeline of key milestones
  4. State of the art
  5. Inorganic solid electrolytes: sulfides, oxides and halides
  6. Interfaces, interphases and mechanics
  7. Lithium-metal anodes and dendrites
  8. Silicon and other anodes
  9. Sodium-ion and other post-lithium chemistries
  10. Polymer and composite electrolytes
  11. Computational and machine-learning approaches
  12. Quantitative benchmarks
  13. Open problems and active debates
  14. Major programs and players
  15. Outlook: what to watch (next 12-18 months)
  16. Key papers
  17. Glossary

Sample findings

  • Li10GeP2S12 (LGPS) was reported in 2011 by its authors with a room-temperature bulk Li-ion conductivity of 12 mS per cm, an early benchmark for sulfide solid electrolytes.
  • A sulfide superionic conductor was reported by its authors in 2016 with a room-temperature bulk conductivity of 25 mS per cm, the highest bulk value among the sources cited here.
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