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Insights into Lithium Surface: Stable Cycling by Controlled 10 μm Deep Surface Relief, Reinterpreting the Natural Surface Defect on Lithium Metal Anode

Title
Insights into Lithium Surface: Stable Cycling by Controlled 10 μm Deep Surface Relief, Reinterpreting the Natural Surface Defect on Lithium Metal Anode
Author
조국영
Keywords
lithium metal battery; surface pattern; thin lithium anode; lithium plating and stripping; shape of pattern
Issue Date
2019-08
Publisher
American Chemical Society
Citation
ACS Applied Energy Materials, v. 2, No. 8, Page. 5656-5664
Abstract
The future of next-generation rechargeable batteries, such as lithium metal, lithium–sulfur, and lithium–oxygen batteries, hinges on the utilization of metallic lithium as the anode. However, the practical application of lithium anodes has been challenging thus far due to the uncontrolled growth of lithium dendrites and extremely unstable interfaces between lithium and the electrolyte. Extensive investigations have been conducted to mitigate these limitations; nevertheless, there is a lack of fundamental insight into physical and chemical characteristics, the effect of thickness, and surface morphology of lithium anodes. Herein, an overview of the fundamental understanding of the effect of the shape of surface reliefs on lithium anode under the different cycling conditions is reported. Two different types of 10 μm deep surface reliefs, viz., continuous and discontinuous, were fabricated via soft lithography. It was newly found that the lithium-stripping behavior was significantly affected by the shape of surface reliefs. Furthermore, it is demonstrated that a 10 μm deep surface relief can not only be utilized on a thin lithium anode (20 μm) but also enhances the cell cycling stability. It is anticipated that the results will shed light on the practical utilization of lithium anodes by using the combination of other physical or chemical modification techniques.
URI
https://pubs.acs.org/doi/abs/10.1021/acsaem.9b00805https://repository.hanyang.ac.kr/handle/20.500.11754/117782
ISSN
2574-0962
DOI
10.1021/acsaem.9b00805
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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