In-Situ Integration of a Hydrophobic and Fast-Zn2+ -Conductive Inorganic Interphase to Stabilize Zn Metal Anodes.
Angew Chem Int Ed Engl
; 62(27): e202304444, 2023 Jul 03.
Article
en En
| MEDLINE
| ID: mdl-37129439
ABSTRACT
The irreversible issues of Zn anode stemming from dendrite growth and water-induced erosion have severely hindered the commercialization of rechargeable aqueous Zn batteries. Herein, a hydrophobic and fast-Zn2+ -conductive zinc hexacyanoferrate (HB-ZnHCF) interphase layer is in situ integrated on Zn by a rapid room-temperature wet-chemistry method to address these dilemmas. Different from currently proposed hydrophilic inorganic cases, the hydrophobic and compact HB-ZnHCF interphase effectively prevents the access of water molecules to Zn surface, thus avoiding H2 evolution and Zn corrosion. Moreover, the HB-ZnHCF with large internal ion channels, strong zincophilicity, and high Zn2+ transference number (0.86) permits fast Zn2+ transport and enables smooth Zn deposition. Remarkably, the resultant HB-ZnHCF@Zn electrode delivers unprecedented reversibility with 99.88 % Coulombic efficiency over 3000â
cycles, realizes long-term cycling over 5800â
h (>8â
months, 1â
mA cm-2 ) and 1000â
h (10â
mA cm-2 ), and assures the stable operation of full Zn battery with both coin- and pouch-type configurations.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Año:
2023
Tipo del documento:
Article