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<p>The exponential growth in lithium-ion battery production has resulted in a massive accumulation of lithium slag, posing a major challenge to sustainable waste management and environmental protection. In this study, 100 wt% lithium-slag-based porous ceramics were prepared for the first time using an optimized foaming-gelcasting technique incorporating advanced reagents. The thermodynamic phase transition process of the lithium slag complex system was studied using FactSage software, TG-DSC, and XRD analysis. The effects of reagent concentration and sintering parameters on porosity, pore size distribution, and compressive strength were studied. Under optimal reagent system conditions and sintering parameters, porous ceramics with a porosity of 71.9%, an average pore size of 130&#xa0;μm, and a compressive strength of 2.96&#xa0;MPa were successfully obtained. Subsequent investigations into the potential applications of lithium slag-based foam ceramics revealed a broad application range. Furthermore, by increasing the particle loading, the mechanical performance was enhanced, achieving a strength of up to 15.52&#xa0;MPa. The method utilizes lithium slag as the sole base raw material, providing an excellent lithium slag disposal solution, and offering a novel perspective on industrial waste management.</p> Graphical abstract <p></p>

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Pore characteristics and pore size distribution of lithium slag-based porous ceramics prepared via the foaming-in-situ solidification process

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • Shipei Wang,
  • Yanxiu Wang,
  • Li Wang,
  • Zongpeng Chi,
  • Zhiguang Lu,
  • Anqi Yang,
  • Chengwen Wang,
  • Wei Sun,
  • Ling Zhang,
  • Qingjun Guan,
  • Jia Tian,
  • Houqin Wu,
  • Jie Yang

摘要

The exponential growth in lithium-ion battery production has resulted in a massive accumulation of lithium slag, posing a major challenge to sustainable waste management and environmental protection. In this study, 100 wt% lithium-slag-based porous ceramics were prepared for the first time using an optimized foaming-gelcasting technique incorporating advanced reagents. The thermodynamic phase transition process of the lithium slag complex system was studied using FactSage software, TG-DSC, and XRD analysis. The effects of reagent concentration and sintering parameters on porosity, pore size distribution, and compressive strength were studied. Under optimal reagent system conditions and sintering parameters, porous ceramics with a porosity of 71.9%, an average pore size of 130 μm, and a compressive strength of 2.96 MPa were successfully obtained. Subsequent investigations into the potential applications of lithium slag-based foam ceramics revealed a broad application range. Furthermore, by increasing the particle loading, the mechanical performance was enhanced, achieving a strength of up to 15.52 MPa. The method utilizes lithium slag as the sole base raw material, providing an excellent lithium slag disposal solution, and offering a novel perspective on industrial waste management.

Graphical abstract