Cationic covalent organic framework electrolyte achieving record proton storage and durability in solid-state proton batteries

doi:10.1016/j.jpowsour.2026.240472

Cationic covalent organic framework electrolyte achieving record proton storage and durability in solid-state proton batteries

2026-05-23

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DOI：10.1016/j.jpowsour.2026.240472

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• Cationic COF electrolyte via anion-exchange phosphoric acid confinement. • Ultrahigh proton conductivity >10−1 S cm−1 in the cationic COF electrolyte. • Electrostatic interactions enable stable acid immobilization. • Proton battery achieves 91 mAh g−1 capacity and excellent capacity retention.

Keywords:

Cationic COF

Proton conductivity

Anion-exchange

Solid-state proton battery

Acid confinement

Cationic covalent organic framework electrolyte achieving record proton storage and durability in solid-state proton batteries

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