Challenges and strategies for zinc anodes in aqueous Zinc-Ion batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 507, P. 160615 - 160615

Published: Feb. 13, 2025

Language: Английский

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Unidirectional Ion Sieve Enabling High-Flux and Reversible Zinc Anodes

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

The longevity of aqueous batteries after scaling up is largely restricted by metal anodes (Zn, Al, and Mg). Parasitic reactions uncontrolled dendrites dominate failure modes, especially at high current densities. To fully improve its reversibility, tailored surface chemistry well-designed ion transport channels are simultaneously demanded. Here, inspired the reticulated structure sea urchin shell, an aligned porous coating assembled from graphene oxide sodium alginate anchored on zinc anodes, termed a unidirectional sieve. As revealed multiscale modeling tests, this biomimetic layer produces area, creating low-tortuosity that greatly enhance kinetics uniform distribution ions. introduction ion-conductive natural polymer enables well-tuned hydration selectivity, alleviating side reactions. With structural-functional integrity design, decorated symmetrical cell presents reversible cycling for 1600 h, with reduced nucleation potential 21 mV Coulombic efficiency. Aided Distribution Relaxation Time tool, different electrochemical processes deconvoluted to understand respective mechanisms, thereby providing referable strategy product scaling. In end, 7Ah Zn||VO2 pouch demonstrates stable over 500 cycles 1 A·g-1, capacity retention 90%.

Language: Английский

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Bioinspired design strategies for high-performance Zn-MnO₂ batteries

Applied Energy, Journal Year: 2025, Volume and Issue: 393, P. 126140 - 126140

Published: May 17, 2025

Language: Английский

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