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Related Concept Videos

Alkali Aggregate Reaction in Concrete01:26

Alkali Aggregate Reaction in Concrete

The alkali-aggregate reaction in concrete involves natural siliceous minerals in aggregates reacting with alkaline hydroxides derived from cement alkalis. This reaction forms an alkali-silica gel that absorbs water, swells, and increases in volume, which is confined by the surrounding cement paste, creating internal pressures that crack and disrupt the concrete. The extent of expansion and damage can be partly attributed to the alkali-silica reaction's osmotic hydraulic pressure and the...

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Programming asphalt-derived carbon microstructures via oxygen-induced precursor restructuring for alkali-ion battery

Feixiang Zhou1, Yuting Hu1, Yamin Pei1

  • 1School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, PR China.

Journal of Colloid and Interface Science
|April 12, 2026
PubMed
Summary

Researchers developed a new method to create high-performance carbon anodes from asphalt for lithium-ion and sodium-ion batteries. This strategy optimizes material structure for enhanced energy storage and durability.

Keywords:
Alkali-ion batteriesAsphalt-derived carbonCarbon microstructure engineeringIons diffusion kineticsOxygen-induced precursor restructuring

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Chemical Engineering

Background:

  • Controlling microstructural evolution in carbon materials is key for battery performance.
  • Understanding the link between precursor restructuring and carbonization thermodynamics is crucial.

Purpose of the Study:

  • To synergistically regulate precursor chemistry and thermal evolution for amorphous carbons.
  • To program disorder, interlayer spacing, and pore architecture in asphalt-derived carbons.
  • To enhance electrochemical performance in both lithium-ion and sodium-ion batteries.

Main Methods:

  • HNO3 pre-oxidation and controlled carbonization of de-oiled asphalt.
  • Dual-modification strategy involving deep HNO3 oxidation and zinc gluconate for sodium-ion battery anodes.
  • Characterization of structural disorder, interlayer spacing, and pore architecture.

Main Results:

  • Optimized carbon anode achieved 544.9 mAh g-1 capacity with 90.1% retention after 230 cycles in LIBs.
  • Modified carbon anode delivered 241.6 mAh g-1 capacity with 73.1% retention over 330 cycles in SIBs.
  • The strategy successfully programmed disorder, expanded interlayer spacing, and created microporosity.

Conclusions:

  • A versatile programming strategy transforms low-cost asphalt into high-performance carbon anodes.
  • The method enhances ion transport and storage thermodynamics for alkali-ion batteries.
  • This approach offers a sustainable pathway for advanced energy storage materials.