Effects of cathode electrolyte interfacial (CEI) layer on long term cycling of all-solid-state thin-film batteries
| Autor: | Jungwoo Z. Lee, Nathanaël Grillon, Marina Proust, Lili Han, Delphine Guy-Bouyssou, Emilien Bouyssou, Huolin L. Xin, Ying Shirley Meng, Ziying Wang |
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| Rok vydání: | 2016 |
| Předmět: |
Thin-film battery
Materials science Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry 01 natural sciences Energy storage Lithium-ion battery Interfacial phenomena law.invention chemistry.chemical_compound law Interface resistance Electrical and Electronic Engineering Physical and Theoretical Chemistry Lithium cobalt oxide Renewable Energy Sustainability and the Environment 021001 nanoscience & nanotechnology Solid electrolyte Cathode 0104 chemical sciences Chemical engineering chemistry Electrode Lithium 0210 nano-technology Layer (electronics) |
| Zdroj: | Wang, Z; Lee, JZ; Xin, HL; Han, L; Grillon, N; Guy-Bouyssou, D; et al.(2016). Effects of cathode electrolyte interfacial (CEI) layer on long term cycling of all-solid-state thin-film batteries. JOURNAL OF POWER SOURCES, 324, 342-348. doi: 10.1016/j.jpowsour.2016.05.098. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/1nh1z6ww |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2016.05.098 |
| Popis: | All-solid-state lithium-ion batteries have the potential to not only push the current limits of energy density by utilizing Li metal, but also improve safety by avoiding flammable organic electrolyte. However, understanding the role of solid electrolyte – electrode interfaces will be critical to improve performance. In this study, we conducted long term cycling on commercially available lithium cobalt oxide (LCO)/lithium phosphorus oxynitride (LiPON)/lithium (Li) cells at elevated temperature to investigate the interfacial phenomena that lead to capacity decay. STEM-EELS analysis of samples revealed a previously unreported disordered layer between the LCO cathode and LiPON electrolyte. This electrochemically inactive layer grew in thickness leading to loss of capacity and increase of interfacial resistance when cycled at 80 °C. The stabilization of this layer through interfacial engineering is crucial to improve the long term performance of thin-film batteries especially under thermal stress. |
| Databáze: | OpenAIRE |
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