In:
Advanced Materials, Wiley
Abstract:
Severe dendrite growth and high activity of lithium metal anode lead to short lifespan and poor safety, seriously hindering the practical applications of lithium metal batteries. By tri‐salt electrolyte design, we constructed a F‐/N‐containing inorganics‐rich solid electrolyte interphase upon lithium anode, which is electrochemically and thermally stable during the long‐term cycles and safety abuse conditions. As a result, the Coulombic efficiency can maintain 98.98% during 400 cycles. 85.0% capacity can be retained for coin‐type full cells with 3.14 mAh cm −2 LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode after 200 cycles and 1.0 Ah pouch‐type full cells with 4.0 mAh cm −2 cathode after 72 cycles. During the thermal runaway tests of cycled 1.0 Ah pouch cell, the onset and triggering temperatures are increased from 70.8 °C and 117.4 °C to 100.6 °C and 153.1 °C, respectively, indicating the greatly enhanced safety performance. This work affords novel insights for electrolyte and interface design, potentially paving the way for high‐energy‐density, long‐lifespan, and thermally‐safe lithium metal batteries. This article is protected by copyright. All rights reserved
Type of Medium:
Online Resource
ISSN:
0935-9648
,
1521-4095
DOI:
10.1002/adma.202307370
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
1474949-X