期刊
NANO LETTERS
卷 23, 期 10, 页码 4415-4422出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.3c00720
关键词
All-solid-state lithium metal batteries; interlayer; silver-carbon composite; sheet-type solid-state cells
By using a silver-carbon (Ag-C) interlayer, the contact between the lithium anode and solid electrolyte in all-solid-state batteries can be improved, leading to enhanced battery performance.
All-solid-state batteries with lithium metal anodes hold great potential for high-energy battery applications. However, forming and maintaining stable solid-solid contact between the lithium anode and solid electrolyte remains a major challenge. One promising solution is the use of a silver-carbon (Ag-C) interlayer, but its chemomechanical properties and impact on interface stabilities need to be comprehensively explored. Here, we examine the function of Ag-C interlayers in addressing interfacial challenges using various cell configurations. Experiments show that the interlayer improves interfacial mechanical contact, leading to a uniform current distribution and suppressing lithium dendrite growth. Furthermore, the interlayer regulates lithium deposition in the presence of Ag particles via improved Li diffusivity. The sheet-type cells with the interlayer achieve a high energy density of 514.3 Wh L-1 and an Coulombic of 99.97% over 500 This work provides insights into the benefits of using Ag-C interlayers for enhancing the performance of all-solid-state batteries.
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