Strategic Approaches to the Dendritic Growth and Interfacial Reaction of Lithium Metal Anode |
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Authors: | Dr. Sang A Han Hamzeh Qutaish Prof. Min-Sik Park Prof. Janghyuk Moon Prof. Jung Ho Kim |
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Affiliation: | 1. Institute for Superconducting & Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, Squires Way, North Wollongong, NSW 2500 Australia;2. Department of Advanced Materials Engineering for Information and electronic, Integrated Education Institute for Frontier Science & Technology (BK21 Four), Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104 Republic of Korea;3. School of Energy Systems Engineering, Chung-Ang University, Heukseok-Ro, Dongjak-gu, Seoul, 06974 Republic of Korea |
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Abstract: | Utilization of lithium (Li) metal anode is highly desirable for achieving high energy density batteries. Even so, the unavoidable features of Li dendritic growth and inactive Li are still the main factors that hinder its practical application. During plating and stripping, the solid electrolyte interphase (SEI) layer can provide passivation, playing an important role in preventing direct contact between the electrolyte and the electrode in Li metal batteries. Because of complexities of the electrolyte chemical and electrochemical reactions, the various formation mechanisms for the SEI are still not well understood. What we do know is that a strategic artificial SEI achieved through additives electrolyte can suppress the Li dendrites. Otherwise, the dendrites keep generating an abundance of irreversible Li, resulting in severe capacity loss, internal short-circuiting, and cell failure. In this minireview, we focus on the phenomenon of dendritic Li-growth and provide a brief overview of SEI formation. We finally provide some clear insights and perspectives toward practical application of Li metal batteries. |
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Keywords: | Lithium metal anode Lithium dendrite growth Solid-electrolyte interphase (SEI) Electrolyte additives Anode-free |
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