In:
Advanced Materials, Wiley, Vol. 35, No. 24 ( 2023-06)
Abstract:
The uncontrollable dendrite growth and unstable solid electrolyte interphase have long plagued the practical application of Li metal batteries. Herein, a dual‐layered artificial interphase LiF/LiBO–Ag is demonstrated that is simultaneously reconfigured via an electrochemical process to stabilize the lithium anode. This dual‐layered interphase consists of a heterogeneous LiF/LiBO glassy top layer with ultrafast Li‐ion conductivity and lithiophilic Li–Ag alloy bottom layer, which synergistically regulates the dendrite‐free Li deposition, even at high current densities. As a result, Li||Li symmetric cells with LiF/LiBO–Ag interphase achieve an ultralong lifespan (4500 h) at an ultrahigh current density and area capacity (20 mA cm −2 , 20 mAh cm −2 ). LiF/LiBO–Ag@Li anodes are successfully applied in quasi‐solid‐state batteries, showing excellent cycling performances in symmetric cells (8 mA cm −2 , 8 mAh cm −2 , 5000 h) and full cells. Furthermore, a practical quasi‐solid‐state pouch cell coupling with a high‐nickel cathode exhibits stable cycling with a capacity retention of over 91% after 60 cycles at 0.5 C, which is comparable or even better than that in liquid‐state pouch cells. Additionally, a high‐energy‐density quasi‐solid‐state pouch cell (10.75 Ah, 448.7 Wh kg −1 ) is successfully accomplished. This well‐orchestrated interphase design provides new guidance in engineering highly stable interphase toward practical high‐energy‐density lithium metal batteries.
Type of Medium:
Online Resource
ISSN:
0935-9648
,
1521-4095
DOI:
10.1002/adma.202300350
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
1474949-X