Accelerating Ion Desolvation via Bioinspired Ion Channel Design in Nonconcentrated Aqueous Electrolytes

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

In aqueous-based electrochemical energy storage devices, uncontrolled hydrolysis of water at the interfaces limits application such aqueous batteries or supercapacitors in business. The "water-in-salt" design is a valid strategy to broaden stability window electrolytes, but drawbacks as high manufacturing cost, electrolyte viscosity, etc., also hinder its development. Here, inspired by biological ion channels cell membranes, we propose an effective approach engineer electrode surface, inducing desolvation hydrated ions interface and inhibiting decomposition nonconcentrated electrolytes. engineering enables induction controlled accelerates transportation ions, e.g., potassium. subnanometer (0.8 nm) forces potassium shed their solvation shell with hydration number only 0.3, while electrostatic interactions between pore groups facilitate transport. Zn||Zn cells demonstrate stable cycling lifespan over 1000 h 1 mA cm-2/10 mAh cm-2. This work sheds new light on regulating low-concentration electrolytes for designing devices.

Language: Английский

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A bioimmune mechanism-inspired targeted elimination mechanism on the anode interface for zinc–iodine batteries

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Alkaline byproducts at the zinc anode interface continue to exacerbate subsequent side reactions, so realizing timely salvage of electrodes is equally important compared upfront prevention strategies.

Language: Английский

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Modulating the solvation sheath via bio-inspired electrolyte additives towards dendrite-free aqueous zinc ion batteries

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 111174 - 111174

Published: April 1, 2025

Language: Английский

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Ramsdellite-MnO₂ Regeneration via Acid-Mediated Redox Tuning toward Rechargeable Aqueous Zinc-Ion Batteries

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

The mounting accumulation of spent alkaline batteries (SABs) elicits concerns over both environmental threats and the recycling industry's profitability, closely tied to chemical reactions in manganese-based waste treatment. Herein, we design an acid-modulated phase-reconstruction strategy for sustainable recovery manganese oxides from SABs, where moderate proton participation facilitates preformation MnOOH intermediates before initial transformation ramsdellite-MnO2 (RM-R, orthorhombic) final conversion pyrolusite-MnO2 (RM-β, tetragonal) nanomaterials. This rarely reported metastable RM-R phase features a unique tunneled framework (1 × 2 edge-shared MnO6 octahedra) enabling reversible H+/Zn2+ (de)intercalation, though its traditional synthesis remains challenging due thermodynamic instability. First-principles calculations reveal that possesses lower Zn2+ diffusion barriers (0.44 eV) than RM-β (0.99 eV), consistent with superior storage performance. Moreover, higher specific surface area enables cathode battery-supercapacitor hybrid behavior, which delivers remarkable capacity (214.9 mA h g-1 at 0.1 A g-1) long cycling stability (98% retention after 1000 cycles), outperforming most MnO2-based cathodes. low-acid regeneration protocol (4 mL HCl/1.85 g waste) paves way closed-loop battery clarifies structure-property relationships oxides.

Language: Английский

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High yielding hierarchical porous Fe-N-C with enriched effective active sites: Promoting oxygen reduction reaction electrocatalytic kinetics

Science China Technological Sciences, Journal Year: 2025, Volume and Issue: 68(5)

Published: April 17, 2025

Language: Английский

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