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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
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Expired milk powder emulsion-derived carbonaceous framework/Si composite as efficient anode for lithium-ion batteries
Junkai Zhao1, Kaimeng Yang1, Jianjun Wang2
1Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China; Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology (CAST), Beijing 100094, China.
Journal of Colloid and Interface Science
|February 3, 2023
Summary
Researchers developed advanced silicon/carbon composite anodes for lithium-ion batteries using recycled milk powder. These composites offer high capacity and stability, paving the way for next-generation energy storage solutions.
Area of Science:
- Materials Science
- Electrochemistry
- Sustainable Chemistry
Background:
- Silicon/carbon composites are promising for next-generation lithium-ion batteries due to high capacity and conductivity.
- Challenges include silicon's volume expansion and conductivity issues during cycling.
Purpose of the Study:
- To design and prepare novel silicon/carbon composites using waste milk powder for lithium-ion battery anodes.
- To enhance the electrochemical performance and cycling stability of silicon anodes.
Main Methods:
- Fabrication of nitrogen, phosphorus codoped foam-like porous carbon/Si (FPC@Si) and carbon coated Si (NPC@Si) composites from expired milk powder.
- Characterization of structural and electrochemical properties.
- Testing of full cells for practical application potential.
Main Results:
- FPC@Si and NPC@Si composites demonstrated improved conductivity and stability of the solid electrolyte interface.
- Alleviation of silicon's volume expansion during charge/discharge cycles.
- Reversible capacities of 587.3 mAh g⁻¹ (FPC@Si) and 731.2 mAh g⁻¹ (NPC@Si) were maintained after 1000 cycles at 400 mA g⁻¹.
Conclusions:
- The developed silicon/carbon composites exhibit excellent long-term cycling stability and rate capability.
- The study highlights waste material utilization for advanced energy storage and provides a design strategy for high-performance anodes.
