Li metal coated with Li3PO4 film via atomic layer deposition as battery anode
| Autor: | Xiaopeng Cheng, Rui Wu, Xianqiang Liu, Jiajia Niu, Huan Liu, Yuefei Zhang, Tianci Cao, Mingming Wang |
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| Rok vydání: | 2021 |
| Předmět: |
Battery (electricity)
Materials science General Chemical Engineering General Engineering General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Amorphous solid Anode Atomic layer deposition chemistry Electrode General Materials Science Lithium Thin film Composite material 0210 nano-technology Layer (electronics) |
| Zdroj: | Ionics. 27:2445-2454 |
| ISSN: | 1862-0760 0947-7047 |
| Popis: | Lithium metal is expected to become one of the most high-energy density anode materials for electronic storage device. However, sharp lithium dendrites and accumulated “dead lithium” cause the consume of electrolyte and the reduction in stability for lithium metal batteries and further lead to serious safety risks in the practical application. To alleviate this problem, we firstly construct a uniform and dense amorphous Li3PO4 thin film with thickness of 10 nm via atomic layer deposition (ALD) coating lithium metal as anode. The as-prepared Li3PO4 thin film improves the cycling life of the symmetrical batteries more than double and successfully resists the shock of high current. The growth of needle-like lithium dendrites are obviously suppressed due to film's amorphous characteristics and higher modulus. The artificial SEI layer mainly homogenizes the lithium ion flux on the electrode surface to achieve the purpose of uniform Li deposition. |
| Databáze: | OpenAIRE |
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