Enhancing Li Ion Battery Performance by Mechanical Resonance
| Autor: | Wooyoung Shim, Sangjin Choi, Keeyoung Jung, Hyung Wan Do, Hyeonsoo Kang, Sung Soon Kim, Jongbum Won, Inchul Park, Tae Hoon Kim, Dana Jin, Gwangmook Kim |
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| Rok vydání: | 2021 |
| Předmět: |
Battery (electricity)
Materials science Mechanical Engineering Bioengineering Nanotechnology 02 engineering and technology General Chemistry Electrolyte 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry Lithium-ion battery Cathode Anode law.invention law General Materials Science Wetting 0210 nano-technology Separator (electricity) |
| Zdroj: | Nano letters. 21(12) |
| ISSN: | 1530-6992 |
| Popis: | The quest for safe and high-performance Li ion batteries (LIBs) motivates intense efforts seeking a high-energy but reliable anode, cathode, and nonflammable electrolyte. For any of these, exploring new electrochemistry methods that enhance safety and performance by employing well-designed electrodes and electrolytes are required. Electrolyte wetting, governed by thermodynamics, is another critical issue in increasing Li ion transport through the separator. Herein, we report an approach to enhancing LIB performance by applying mechanical resonant vibration to increase electrolyte wettability on the separator. Wetting is activated at a resonant frequency with a capillary wave along the surface of the electrolyte, allowing the electrolyte to infiltrate into the porous separator by inertia force. This mechanical resonance, rather than electrochemistry, leads to the high specific capacity, rate capability, and cycling stability of LIBs. The concept of the mechanical approach is a promising yet simple strategy for the development of safer LIBs using liquid electrolytes. |
| Databáze: | OpenAIRE |
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