Evidence of Copper Separation in Lithiated Cu6Sn5 Lithium-Ion Battery Anodes
| Autor: | Xin Fu Tan, Wenhui Yang, Stuart McDonald, Kohei Aso, Syo Matsumura, Kazuhiro Nogita |
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| Rok vydání: | 2019 |
| Předmět: |
Battery (electricity)
Materials science Diffusion Intermetallic Energy Engineering and Power Technology chemistry.chemical_element Copper Lithium-ion battery Anode chemistry Chemical engineering Transmission electron microscopy Phase (matter) Materials Chemistry Electrochemistry Chemical Engineering (miscellaneous) Electrical and Electronic Engineering |
| Zdroj: | ACS Applied Energy Materials. 3:141-145 |
| ISSN: | 2574-0962 |
| Popis: | Intermetallics such as CuSn, NiSi, and CuGa etc., are promising candidate materials to replace carbon-based lithium-ion battery anodes. However, the lithiation reactions of these anodes often involve the separation of the inactive phases, a slow process that retards the lithiation kinetics and deactivates their role as a stress buffer. This research visualizes the separated Cu in a lithiated CuSn anode by advanced transmission electron microscopy techniques. Cu nanospheres of 3-4 nm are found homogeneously distributed in both LiSn and LiCuSn phases, suggesting that Cu is transported by long-range diffusion from the reaction site at the LiSn/LiCuSn phase boundaries. |
| Databáze: | OpenAIRE |
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