Ambient-Air Stable Lithiated Anode for Rechargeable Li-Ion Batteries with High Energy Density
| Autor: | Martin Dontigny, Karim Zaghib, Zeyuan Cao, Sicen Du, Yuan Yang, Haowei Zhai, Pengyu Xu, Jyotirmoy Mandal |
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| Rok vydání: | 2016 |
| Předmět: |
Battery (electricity)
Materials science Chemical substance chemistry.chemical_element Bioengineering Nanotechnology 02 engineering and technology Electrolyte engineering.material 010402 general chemistry 01 natural sciences Energy storage Coating General Materials Science Mechanical Engineering General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Anode chemistry Chemical engineering engineering Lithium 0210 nano-technology Faraday efficiency |
| Zdroj: | Nano letters. 16(11) |
| ISSN: | 1530-6992 |
| Popis: | An important requirement of battery anodes is the processing step involving the formation of the solid electrolyte interphase (SEI) in the initial cycle, which consumes a significant portion of active lithium ions. This step is more critical in nanostructured anodes with high specific capacity, such as Si and Sn, due to their high surface area and large volume change. Prelithiation presents a viable approach to address such loss. However, the stability of prelithiation reagents is a big issue due to their low potential and high chemical reactivity toward O2 and moisture. Very limited amount of prelithiation agents survive in ambient air. In this research, we describe the development of a trilayer structure of active material/polymer/lithium anode, which is stable in ambient air (10–30% relative humidity) for a period that is sufficient to manufacture anode materials. The polymer layer protects lithium against O2 and moisture, and it is stable in coating active materials. The polymer layer is gradually dis... |
| Databáze: | OpenAIRE |
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