Layered Heterostructure Ionogel Electrolytes for High-Performance Solid-State Lithium-Ion Batteries
| Autor: | Woo Jin Hyun, Mark C. Hersam, Norman S. Luu, Cory M. Thomas |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering chemistry.chemical_element Heterojunction 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Cathode 0104 chemical sciences Anode law.invention chemistry.chemical_compound Chemical engineering chemistry Mechanics of Materials law Ionic liquid General Materials Science Lithium 0210 nano-technology Cobalt oxide |
| Zdroj: | Advanced materials (Deerfield Beach, Fla.). 33(13) |
| ISSN: | 1521-4095 |
| Popis: | Ionogel electrolytes based on ionic liquids and gelling matrices offer several advantages for solid-state lithium-ion batteries, including nonflammability, wide processing compatibility, and favorable electrochemical and thermal properties. However, the absence of ionic liquids that are concurrently stable at low and high potentials constrains the electrochemical windows of ionogel electrolytes and thus their high-energy-density applications. Here, ionogel electrolytes with a layered heterostructure are introduced, combining high-potential (anodic stability: >5 V vs Li/Li+ ) and low-potential (cathodic stability: 1 mS cm-1 at room temperature). Using the layered heterostructure ionogel electrolytes, full-cell solid-state lithium-ion batteries with a nickel manganese cobalt oxide cathode and a graphite anode are demonstrated, exhibiting voltages that are unachievable with either the high-potential or low-potential ionic liquid alone. Compared to ionogel electrolytes based on mixed ionic liquids, the layered heterostructure ionogel electrolytes enable higher stability operation of full-cell lithium-ion batteries, resulting in significantly enhanced cycling performance. |
| Databáze: | OpenAIRE |
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