Lithium metal anode on a copper dendritic superstructure
| Autor: | Sungmin Jung, Jong-Seok Park, Ha Nee Umh, Inho Nam, Jian Yeo, Jongheop Yi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology Current collector 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Copper Stripping (fiber) 0104 chemical sciences Anode lcsh:Chemistry chemistry Chemical engineering lcsh:Industrial electrochemistry lcsh:QD1-999 Lithium metal 0210 nano-technology Faraday efficiency Voltage lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 99, Iss, Pp 27-31 (2019) |
| ISSN: | 1388-2481 |
| Popis: | 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 (~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. Keywords: Li-metal batteries, Anode-free batteries, Hierarchical current collector, Three-dimensional cu current collector |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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