Cited 15 time in webofscience Cited 12 time in scopus

Size effects of micro-pattern on lithium metal surface on the electrochemical performance of lithium metal secondary batteries

Title
Size effects of micro-pattern on lithium metal surface on the electrochemical performance of lithium metal secondary batteries
Authors
Park, JoonamKim, DohwhanJin, DaheePhatak, CharudattaCho, Kuk YoungLee, Young-GiHong, SeungbumRyou, Myung-HyunLee, Yong Min
DGIST Authors
Lee, Yong Min
Issue Date
2018-12
Citation
Journal of Power Sources, 408(31), 136-142
Type
Article
Article Type
Article; Proceedings Paper
Author Keywords
Lithium metalMicro-patternModelingPlating and strippingSecondary battery
Keywords
SULFUR BATTERIESION BATTERIES
ISSN
0378-7753
Abstract
Two micro-patterns of different sizes (50 and 80 μm) are designed to have equivalent capacities of 1.06 and 2.44 mAh cm−2 by building a computational battery model. After preparing two stamps each possessing a micro-pattern design, the corresponding pattern is properly imprinted on the surface of 100 μm lithium metal, which is confirmed by scanning electron microscopy. When both micro-patterned lithium metals are electrochemically reduced and oxidized up to 1 mAh cm−2 in Li/Li symmetric cells at 1 or 2 mA cm−2, the 80 μm-patterned lithium shows a more stabilized lower overpotential during long-term cycling than the 50 μm-patterned and bare lithium, probably due to the lithium anchoring effect and a larger empty volume in the patterns. Additionally, an overflow of lithium deposits is easily observed in the 50 μm-patterned lithium metal, while the 80 μm-patterned lithium metal holds most of the lithium deposits within the patterns. When both micro-patterned lithium metals are assembled to full cells with a LiNi0·6Co0·2Mn0·2O2 cathode of 2 mAh cm−2, the 80 μm-patterned lithium metal shows much better electrochemical performances with stable plating/stripping behavior within the patterns. © 2018 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/9323
DOI
10.1016/j.jpowsour.2018.09.061
Publisher
Elsevier BV
Related Researcher
  • Author Lee, Yong Min Battery Materials & Systems LAB
  • Research Interests Battery; Electrode; Electrolyte; Separator; Simulation
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringBattery Materials & Systems LAB1. Journal Articles


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