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<p>In this work, the granulation of titanium lithium-ion sieves and its application in the recycling of waste lithium-ion batteries were studied. To address the problems of poor permeability and fluidity of lithium-ion sieve powder and low circulation efficiency, modified powder Zr/F-HTO was granulated by using a styrene acrylic emulsion and ethyl cellulose as binders. A comparison of the morphology, specific surface area, and adsorption properties of the granular lithium-ion sieve obtained from the two binders revealed that the granular lithium-ion sieve (SA-Zr/F-HTO) bonded with the styrene acrylic emulsion has a more porous surface structure and a larger specific surface area, and thus has a greater adsorption capacity. The results also show that the adsorption process of SA-Zr/F-HTO conforms to the Langmuir adsorption thermodynamic model and pseudo-second-order kinetic model, indicating that the adsorption process is monolayer chemisorption. In addition, SA-Zr/F-HTO showed excellent lithium selectivity and good cycle stability in simulated lithium-containing mother liquor. The results of column adsorption experiments show that SA-Zr/F-HTO has a long penetration time and high adsorption efficiency, which is suitable for continuous operation and provides an effective method for the efficient recovery of lithium in waste lithium-ion batteries.</p>

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Synthesis and Adsorption Performance of Modified Granular Lithium Ion Sieve

  • 期刊论文

  • 发表日期：

    2026年1月27日

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  • Jinjing Du,
  • Jiayi Ma,
  • Xinxin Cui,
  • Xun Liu,
  • Dongbo Wang,
  • Bin Wang,
  • Xuan Zhang,
  • Ruitong Zhai,
  • Jun Zhu,
  • Heng Zuo,
  • Qian Li,
  • Xihong He

摘要

In this work, the granulation of titanium lithium-ion sieves and its application in the recycling of waste lithium-ion batteries were studied. To address the problems of poor permeability and fluidity of lithium-ion sieve powder and low circulation efficiency, modified powder Zr/F-HTO was granulated by using a styrene acrylic emulsion and ethyl cellulose as binders. A comparison of the morphology, specific surface area, and adsorption properties of the granular lithium-ion sieve obtained from the two binders revealed that the granular lithium-ion sieve (SA-Zr/F-HTO) bonded with the styrene acrylic emulsion has a more porous surface structure and a larger specific surface area, and thus has a greater adsorption capacity. The results also show that the adsorption process of SA-Zr/F-HTO conforms to the Langmuir adsorption thermodynamic model and pseudo-second-order kinetic model, indicating that the adsorption process is monolayer chemisorption. In addition, SA-Zr/F-HTO showed excellent lithium selectivity and good cycle stability in simulated lithium-containing mother liquor. The results of column adsorption experiments show that SA-Zr/F-HTO has a long penetration time and high adsorption efficiency, which is suitable for continuous operation and provides an effective method for the efficient recovery of lithium in waste lithium-ion batteries.