Cited 18 time in webofscience Cited 18 time in scopus

Composite protection layers for dendrite-suppressing non-granular micro-patterned lithium metal anodes

Title
Composite protection layers for dendrite-suppressing non-granular micro-patterned lithium metal anodes
Authors
Kim, SeokwooPark, JinkyuFriesen, AlexLee, HoogilLee, Yong MinRyou, Myung-Hyun
DGIST Authors
Lee, Yong Min
Issue Date
2018-08
Citation
Electrochimica Acta, 282, 343-350
Type
Article
Article Type
Article
Author Keywords
Composite layersLithium batteriesLithium metalsPatterned lithium metalsProtection layers
ISSN
0013-4686
Abstract
One possible way to increase the energy density of Li secondary batteries is to replace the commercialized carbonaceous anodes (such as graphite ones) with Li anodes due to their extremely high theoretical specific capacities, low densities, and lowest negative values of electrochemical potential. Despite these advantages of Li metal anodes, the uncontrolled deposition of dendritic, mossy, and granular Li particles decreases the Coulombic efficiency of Li batteries and causes various safety issues, which limits their scope of practical applications. To solve this problem, a surface-patterned Li metal anode covered with an alumina-based composite protection layer is developed in this work. Subsequently, the composite protection layer composition is optimized, and the electrochemical properties of the resulting micro-patterned Li metal anode are investigated. Due to the existence of a synergistic effect between the surface-patterned Li metal anode and the composite protection layer coating, the deposition of Li ions is effectively controlled, which prevents the formation of dendritic, granular, and moss-like Li particles after multiple deposition cycles even at relatively high current densities (up to 2.4 mA cm−2). © 2018 Elsevier Ltd
URI
http://hdl.handle.net/20.500.11750/6672
DOI
10.1016/j.electacta.2018.05.102
Publisher
Elsevier Ltd
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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