Durable alloy anode for Na-ion batteries with high volumetric energy density

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Nature Energy, Published online: 16 February 2026; doi:10.1038/s41560-026-01974-2

Alloy anodes can boost the energy density of Na-ion batteries but suffer from instability, and current strategies trade off performance and scalability. Here the authors develop a high-loading Sn anode reinforced with single-walled carbon nanotube networks, achieving high capacity and long-term cycling performance.

41560_2026_1974_Fig1_HTML.png

Nature Energy, Published online: 16 February 2026; doi:10.1038/s41560-026-01974-2

Alloy anodes can boost the energy density of Na-ion batteries but suffer from instability, and current strategies trade off performance and scalability. Here the authors develop a high-loading Sn anode reinforced with single-walled carbon nanotube networks, achieving high capacity and long-term cycling performance.

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