Lithium metal anode on a copper dendritic superstructure
- Authors
- Umh, Ha Nee; Park, Jongseok; Yeo, Jian; Jung, Sungmin; Nam, Inho; Yi, Jongheop
- Issue Date
- Feb-2019
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Li-metal batteries; Anode-free batteries; Hierarchical current collector; Three-dimensional cu current collector
- Citation
- ELECTROCHEMISTRY COMMUNICATIONS, v.99, pp 27 - 31
- Pages
- 5
- Journal Title
- ELECTROCHEMISTRY COMMUNICATIONS
- Volume
- 99
- Start Page
- 27
- End Page
- 31
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/63769
- DOI
- 10.1016/j.elecom.2018.12.015
- ISSN
- 1388-2481
1873-1902
- Abstract
- Li-metal is one of the most promising anode materials for electrochemical energy storage. However, the growth of Li dendrites during electrochemical deposition leads to low Coulombic efficiency and safety concerns and has long hindered the application of rechargeable Li-metal batteries. In this study, we designed a Cu dendritic superstructure with macropores as an anode-free three-dimensional current collector, which can significantly improve the electrochemical plating/stripping behavior of Li. The Li-metal anodes are accommodated by a Cu dendritic superstructure with no uncontrollable Li dendrites. This anode can operate for more than 600 h without a short-circuit and exhibits a low level of voltage hysteresis (similar to 20 mV). The anode-free dendritic superstructure demonstrates exceptional performance and highlights the importance of rational design for a current collector that can accommodate Li anodes and provide a long lifespan.
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