ArticleNature communications2026
Metal-organic framework glass enables durable sodium-ion storage for hard carbon negative electrodes.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Hard carbon negative electrodes, owing to their abundant precursors and low operating potential, are promising candidates for sodium-ion batteries. However, sluggish desolvation kinetics and unstable electrode-electrolyte interfaces hinder their practical deployment. Here we report a melt-coating strategy to encapsulate hard carbon particles with a metal-organic framework glass. The resulting glass coating contains sub-nanometer channels that lower the desolvation activation energy, accelerate sodium-ion transport, and induce a thin, anion-derived solid electrolyte interphase rich in NaF during cycling. The optimized interface promotes the formation of quasi-metallic sodium clusters within the closed pores of hard carbon, activating a high-capacity sodium storage mechanism. Consequently, the glass-coated hard carbon delivers a reversible capacity of 462.2 mAh g
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