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The lithium metal anode in Li-S batteries: challenges and recent progress

Title
The lithium metal anode in Li-S batteries: challenges and recent progress
Authors
Hong H.Che Mohamad N.A.R.Chae K.Marques Mota F.Kim D.H.
Ewha Authors
김동하Filipe Marques Mota
SCOPUS Author ID
김동하scopus; Filipe Marques Motascopus
Issue Date
2021
Journal Title
Journal of Materials Chemistry A
ISSN
2050-7488JCR Link
Citation
Journal of Materials Chemistry A vol. 9, no. 16, pp. 10012 - 10038
Publisher
Royal Society of Chemistry
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Review
Abstract
As strenuous research works approach the theoretical limits of the lithium-ion battery, the need to exploit more sustainable chemistries has emerged as a primary concern. The development of the lithium-sulfur (Li-S) battery offers an energy density of 2567 W h kg−1, reflecting an up to three to fivefold enhancement against the state-of-the-art Li-ion device. Solving the critical degradation of the metal anode and suppressing correlated side reactions in the Li-S cell represent, however, pivotal steps towards commercial consideration. In light of the unique Li-S electrochemistry, we examine herein the technical challenges of the lithium metal anode, including the dendritic lithium nucleation and growth during Li plating, and the stabilization of the solid electrolyte interphase (SEI). We revisit key contributions to establish a guideline of crucial factors determining the stability of the anode and its correlation with the electrolyte selection, electrode current density, and the effect of the shuttle of polysulfide intermediate species. Most importantly, our review delivers a comprehensive comparison of introduced strategies for the metal surface protection (including electrolyte-modification-based approaches and metal surface coating), along with a theoretical understanding and analysis of the underlying methodologies. This review sheds light on future opportunities towards a practical application of Li-S batteries, while stimulating progress in the exploitation of lithium metal anodes in parallel technologies in the development of energy storage for a sustainable future (266 citations). © The Royal Society of Chemistry 2021.
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DOI
10.1039/d1ta01091c
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자연과학대학 > 화학·나노과학전공 > Journal papers
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