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A highly resilient mesoporous SiOx lithium storage material engineered by oil-water templating
Eunjun Park1, Min-Sik Park, Jaewoo Lee
1Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 133-791 (Korea).
Chemsuschem
|January 13, 2015
Summary
Researchers developed carbon-coated porous silicon oxide (SiOx) for high-capacity lithium storage. This material offers excellent cycling stability and thermal reliability, paving the way for advanced battery technologies.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Mesoporous silicon-based materials are promising for high-capacity lithium storage.
- Current synthetic routes are complex and limited, hindering practical application.
Purpose of the Study:
- To develop a scalable and efficient method for preparing high-capacity lithium storage materials.
- To investigate the electrochemical performance and stability of carbon-coated porous SiOx.
Main Methods:
- Utilized a sol-gel reaction involving hydrogen silsesquioxane.
- Employed oil-water templating with a hydrophobic oil as a pore-former and carbon precursor.
- Fabricated carbon-coated porous SiOx anodes for lithium-ion batteries.
Main Results:
- Achieved a high capacity of 730 mAh/g.
- Demonstrated outstanding cycling performance over 100 cycles with minimal dimensional changes.
- Exhibited thermal reliability comparable to graphite.
Conclusions:
- Carbon-coated porous SiOx is a high-performance anode material for lithium storage.
- The mesoporous structure enhances lithium storage reliability.
- The scalable sol-gel process offers a versatile route for preparing advanced porous SiOx materials.
