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<p>For the first time, a LiNi<sub>1/3</sub>Co<sub>1/3</sub>Mn<sub>1/3</sub>O<sub>2</sub> aerogel was synthesized using the epoxide-assisted sol–gel synthesis followed by supercritical CO<sub>2</sub> (scCO<sub>2</sub>) drying. Fourier transform infrared spectroscopy (FTIR) and energy-dispersive X-ray spectroscopy (EDS) revealed the characteristic M–O band and carbon content variations before and after heat treatment, respectively, showing consistent results. X-ray diffraction (XRD) confirmed the semi-crystalline and crystalline nature of the materials, with diffraction peaks appearing after scCO<sub>2</sub> drying, likely due to the small ionic radius and high mobility of lithium, which promote nucleation and crystal growth. A mixed-phase material (LiNi<sub>1/3</sub>Co<sub>1/3</sub>Mn<sub>1/3</sub>O<sub>2</sub>, MnO<sub>2</sub>, CoMn<sub>2</sub>O<sub>4</sub>, and Li<sub>2</sub>NiO<sub>2</sub>) with high structural order was obtained at 900&#xa0;°C. Scanning electron microscopy (SEM) showed coral-like, interconnected particles in the semi-crystalline aerogel, while the crystalline aerogel displayed morphologies consistent with the XRD. Transmission electron microscopy (TEM) and fast Fourier transform (FFT) analyses further supported these findings. These materials exhibit strong potential for energy and sensing applications.</p> Graphical abstract <p></p>

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A novel LiNi1/3Co1/3Mn1/3O2 aerogel: Synthesis and morphological/structural properties

  • 期刊论文

  • 发表日期：

    2025年12月19日

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  • María del Rosario González-García,
  • Alan Daniel Alcantar-Mendoza,
  • Antonieta García-Murillo,
  • Eduardo Madrigal-Bujaidar,
  • Felipe de Jesús Carrillo-Romo

摘要

For the first time, a LiNi1/3Co1/3Mn1/3O2 aerogel was synthesized using the epoxide-assisted sol–gel synthesis followed by supercritical CO2 (scCO2) drying. Fourier transform infrared spectroscopy (FTIR) and energy-dispersive X-ray spectroscopy (EDS) revealed the characteristic M–O band and carbon content variations before and after heat treatment, respectively, showing consistent results. X-ray diffraction (XRD) confirmed the semi-crystalline and crystalline nature of the materials, with diffraction peaks appearing after scCO2 drying, likely due to the small ionic radius and high mobility of lithium, which promote nucleation and crystal growth. A mixed-phase material (LiNi1/3Co1/3Mn1/3O2, MnO2, CoMn2O4, and Li2NiO2) with high structural order was obtained at 900 °C. Scanning electron microscopy (SEM) showed coral-like, interconnected particles in the semi-crystalline aerogel, while the crystalline aerogel displayed morphologies consistent with the XRD. Transmission electron microscopy (TEM) and fast Fourier transform (FFT) analyses further supported these findings. These materials exhibit strong potential for energy and sensing applications.

Graphical abstract