Converting Commercial Zn Foils into Single (002)-Textured Zn with Millimeter-Sized Grains for Highly Reversible Aqueous Zinc Batteries.
Angew Chem Int Ed Engl
; 63(17): e202401507, 2024 Apr 22.
Article
em En
| MEDLINE
| ID: mdl-38407548
ABSTRACT
Rechargeable aqueous zinc batteries are promising but hindered by unfavorable dendrite growth and side reactions on zinc anodes. In this study, we demonstrate a fast melting-solidification approach for effectively converting commercial Zn foils into single (002)-textured Zn featuring millimeter-sized grains. The melting process eliminates initial texture, residual stress, and grain size variations in diverse commercial Zn foils, guaranteeing the uniformity of commercial Zn foils into single (002)-textured Zn. The single (002)-texture ensures large-scale epitaxial and dense Zn deposition, while the reduction in grain boundaries significantly minimizes intergranular reactions. These features enable large grain single (002)-textured Zn shows planar and dense Zn deposition under harsh conditions (100â
mA cm-2, 100â
mAh cm-2), impressive reversibility in Zn||Zn symmetric cell (3280â
h under 1â
mA cm-2, 830â
h under 10â
mAh cm-2), and long cycling stability over 180â
h with a high depth of discharge value of 75 %. This study successfully addresses the issue of uncontrollable texture formation in Zn foils following routine annealing treatments with temperatures below the Zn melting point. The findings of this study establish a highly efficient strategy for fabricating highly reversible single (002)-textured Zn anodes.
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MEDLINE
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En
Ano de publicação:
2024
Tipo de documento:
Article