In-Situ Solid Electrolyte Interface via Dual Reaction Strategy for Highly Reversible Zinc Anode.
Angew Chem Int Ed Engl
; 63(41): e202407909, 2024 Oct 07.
Article
em En
| MEDLINE
| ID: mdl-38993054
ABSTRACT
In situ construction of solid electrolyte interfaces (SEI) is an effective strategy to enhance the reversibility of zinc (Zn) anodes. However, in situ SEI to afford high reversibility under high current density conditions (≥20â
mA cm-2) is highly desired yet extremely challenging. Herein, we propose a dual reaction strategy of spontaneous electrostatic reaction and electrochemical decomposition for the in situ construction of SEI, which is composed of organic-rich upper layer and inorganic-rich inner layer. Particularly, in situ SEI performs as "growth binder" at small current density and "orientation regulator" at high current density, which significantly suppresses side reactions and dendrite growth. The in situ SEI affords the record-breaking reversibility of Zn anode under practical conditions, Zn//Zn symmetric cells can stably cycle for over 1300â
h and 400â
h at current densities of 50â
mA cm-2 and 100â
mA cm-2, respectively, showcasing an exceptional cumulative capacity of 67.5â
Ah cm-2. Furthermore, the practicality of this in situ SEI is verified in Zn//PANI pouch cells with high mass loading of 25.48â
mg cm-2. This work provides a universal strategy to design advanced SEI for practical Zn-ion batteries.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
/
Angew. Chem. (Int. ed., Internet)
/
Angewandte Chemie (International ed. Internet)
Ano de publicação:
2024
Tipo de documento:
Article