In:
Angewandte Chemie International Edition, Wiley, Vol. 61, No. 2 ( 2022-01-10)
Abstract:
Solid‐state zinc (Zn) batteries offer a new candidate for emerging applications sensitive to volume, safety and cost. However, current solid polymeric or ceramic electrolyte structures remain poorly conductive for the divalent Zn 2+ , especially at room temperature. Constructing a heterogeneous interface which allows Zn 2+ percolation is a viable option, but this is rarely involved in multivalent systems. Herein, we construct a solid Zn 2+ ‐ion conductor by inducing crystallization of tailored eutectic liquids formed by organic Zn salts and bipolar ligands. High‐entropy eutectic‐networks weaken the ion‐association and form interfacial Zn 2+ ‐percolated channels on the nucleator surfaces, resulting in a solid crystal with exceptional selectivity for Zn 2+ transport ( t =0.64) and appreciable Zn 2+ conductivity ( σ =3.78×10 −5 S cm −1 at 30 °C, over 2 orders of magnitude higher than conventional polymers), and finally enabling practical ambient‐temperature Zn/V 2 O 5 metal solid cells. This design principle leveraged by the eutectic solidification affords new insights on the multivalent solid electrochemistry suffering from slow ion migration.
Type of Medium:
Online Resource
ISSN:
1433-7851
,
1521-3773
DOI:
10.1002/anie.202113086
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
2011836-3
detail.hit.zdb_id:
123227-7
