In:
Angewandte Chemie, Wiley, Vol. 135, No. 10 ( 2023-03)
Abstract:
Highly reversible plating/stripping in aqueous electrolytes is one of the critical processes determining the performance of Zn‐ion batteries, but it is severely impeded by the parasitic side reaction and dendrite growth. Herein, a novel electrolyte engineering strategy is first proposed based on the usage of 100 mM xylitol additive, which inhibits hydrogen evolution reaction and accelerates cations migration by expelling active H 2 O molecules and weakening electrostatic interaction through oriented reconstruction of hydrogen bonds. Concomitantly, xylitol molecules are preferentially adsorbed by Zn surface, which provides a shielding buffer layer to retard the sedimentation and suppress the planar diffusion of Zn 2+ ions. Zn 2+ transference number and cycling lifespan of Zn ∥ Zn cells have been significantly elevated, overwhelmingly larger than bare ZnSO 4 . The cell coupled with a NaV 3 O 8 cathode still behaves much better than the additive‐free device in terms of capacity retention.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v135.10
DOI:
10.1002/ange.202218872
Language:
English
Publisher:
Wiley
Publication Date:
2023
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505872-7
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1479266-7
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