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Hard carbon anode for sodium-ion batteries

Invention Reference Number

202405829
Close-up shot of shredded plastic bottle caps for further recycling at a waste recycling plant. Image from Envato

As the demand for energy storage solutions rises, sodium-ion batteries (SIBs) have emerged as a viable alternative to lithium-ion batteries due to their cost-effectiveness and resource abundance. However, the performance of existing anode materials limits their commercial viability. This technology introduces a novel method for producing high-performance hard carbon anodes from biomass and plastic waste, addressing both energy storage challenges and environmental concerns. The innovative approach transforms waste materials into cost-effective, high-energy-density anodes that enhance the efficiency and lifespan of SIBs.

Description

This invention utilizes an advanced sintering process to convert biomass and plastic waste into high-quality hard carbon anodes tailored for sodium-ion battery applications. By carefully controlling sintering parameters, the resulting hard carbon exhibits optimized microstructural properties that enable stable sodium-ion storage at low voltages. The material undergoes comprehensive characterization using X-ray diffraction, Raman spectroscopy, and electrochemical analysis, ensuring its high energy and power densities. This process not only provides a sustainable alternative to traditional carbon sources but also mitigates environmental waste while supporting the transition to clean energy storage solutions. 

Benefits

  • Sustainable material source: Repurposes biomass and plastic waste to create high-performance anodes
  • Cost-effective production: Reduces reliance on expensive and scarce raw materials for battery manufacturing
  • Enhanced performance: Enables stable, high-energy-density sodium-ion storage, improving battery efficiency

Applications and Industries

  • Grid-scale energy storage for renewable energy integration
  • Electric vehicles and consumer electronics seeking cost-effective battery alternatives
  • Sustainable waste management by converting waste into valuable energy materials

Contact

To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.