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  1. Home
  3. The Structure Impact Of Lignin In Pulping Material On The Energy Storage Performance Of Black Liquor Derived Carbon Cathodes For Zinc Ion Hybrid Capacitors.
  1. Home
  3. The Structure Impact Of Lignin In Pulping Material On The Energy Storage Performance Of Black Liquor Derived Carbon Cathodes For Zinc Ion Hybrid Capacitors.

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The structure impact of lignin in pulping material on the energy storage performance of black liquor derived carbon

Yanjie Yi1, Songqing Hu2, Yuyang Ma1

  • 1State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.

Journal of Colloid and Interface Science
|December 13, 2024

View abstract on PubMed

Summary
This summary is machine-generated.
Keywords:
Black liquorElectrochemical propertiesLigninMethoxy groupZinc ion hybrid capacitors

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Eucalyptus black liquor, rich in methoxy groups, yields superior carbon electrode materials for energy storage. These carbons exhibit enhanced porosity and electrochemical properties, boosting capacitor performance.

Area of Science:

  • Materials Science
  • Electrochemistry
  • Renewable Energy

Background:

  • Black liquor from pulping is a potential source for carbon electrode materials.
  • Lignin microstructure influences the electrochemical properties of derived carbon.

Purpose of the Study:

  • Investigate the link between lignin microstructure and electrochemical properties of black liquor-derived carbon.
  • Evaluate carbon materials from various plant sources (softwood, hardwood, grass).

Main Methods:

  • Characterization of carbon derived from softwood, hardwood, and grass black liquors.
  • Analysis of microstructural and electrochemical properties.
  • Fabrication and testing of zinc-ion hybrid capacitors.

Main Results:

  • Eucalyptus black liquor yields carbon with high specific surface area (1599 m²/g) and oxygen content (5.4%).
  • Methoxy groups in eucalyptus lignin promote micropore formation and oxygen incorporation.
  • Optimized carbon shows high specific capacitance (271 F/g) and improved charge transfer.
  • Zinc-ion hybrid capacitor achieves 71.8 Wh/kg energy density and 1.11 kW/kg power density.

Conclusions:

  • Eucalyptus black liquor is a promising feedstock for high-performance energy storage materials.
  • Methoxy group content is critical for optimizing carbon microstructure and electrochemical performance.
  • Findings guide raw material selection for industrial production of advanced electrode materials.