Uniform lithium plating within 3D Cu foam enabled by Ag nanoparticles
| Autor: | Sheng Liu, Guo-Ran Li, Zi-Wei Zhu, Xue-Ping Gao, Zhen-Yu Wang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Chemical Engineering Composite number Alloy chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Cathode 0104 chemical sciences Anode law.invention chemistry Chemical engineering law Plating Electrode engineering Lithium 0210 nano-technology |
| Zdroj: | Electrochimica Acta. 379:138152 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2021.138152 |
| Popis: | Lithium metal is recognized as the “Holy Grail” of anode materials for high-energy-density batteries. However, the application of the lithium anode is seriously hindered due to its instability especially during the large-capacity lithium stripping/plating process. In this study, a dimensionally stable Li composite electrode is fabricated by electrodepositing lithium on Ag-modified Cu foam. The Li-Ag alloy formed during the initial plating shows micro-structural affinity to lithium and promotes the subsequent uniform Li stripping/plating on the Cu skeleton. The symmetric cell with Li/Ag-modified Cu composite electrode shows much-improved stability as compared to both the Li/3D Cu composite and Li plate electrodes. By investigating the electrochemical performance of the full cells with Li4Ti5O12 cathode, we find the interface stability of the Li composite electrode is deteriorated because of the increase of specific surface area. This work indicates that both dimensional and interface stabilities of lithium anodes are important for fabricating practical secondary lithium batteries. |
| Databáze: | OpenAIRE |
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