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<p>Dry electrode processing offers a solvent-free and scalable pathway toward high-energy lithium metal batteries (LMBs), yet its practical implementation is constrained by tortuous ion/electron transport and weak mechanical cohesion in ultra-thick electrodes. Here, we construct a carbon-coated NASICON-type Li<sub>1.3</sub>Al<sub>0.3</sub>Ti<sub>1.7</sub>(PO<sub>4</sub>)<sub>3</sub> nanofiber network (LATP@C) that serves as an integrated ionic-electronic scaffold within dry-processed Ni-rich cathodes. The one-dimensional LATP@C fibers form a continuous 3D percolation architecture that couples fast Li<sup>+</sup> conduction from the NASICON core with efficient electron transport through the conformal carbon shell. Their rough, oxygen-functionalized surfaces further enhance electrolyte affinity, while the mechanically robust fibrous network bridges NCM811 secondary particles, suppressing crack initiation and preserving structural integrity during cycling. Benefiting from these collective effects, the LATP@C cathode with 100 mg cm<sup>−2</sup> loading delivers 203 mA h g<sup>−1</sup> at 0.1 C and maintains 96.7% capacity over 35 cycles at 0.2 C. Pouch cells incorporating 60 mg cm<sup>−2</sup> LATP@C cathodes retain 80.5% capacity after 50 cycles, highlighting the practical viability of this design.</p>

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Integrated ionic-electronic LATP@C nanofiber networks enable 100 mg cm−2 dry-processed Ni-rich cathodes for lithium-metal batteries

  • 期刊论文

  • 发表日期：

    2026年3月2日

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  • Jingshan Lu,
  • Yue Zhang,
  • Ruifeng Song,
  • Xiaoqin Xiong,
  • Feng Wang,
  • Yunhui Huang,
  • Henghui Xu

摘要

Dry electrode processing offers a solvent-free and scalable pathway toward high-energy lithium metal batteries (LMBs), yet its practical implementation is constrained by tortuous ion/electron transport and weak mechanical cohesion in ultra-thick electrodes. Here, we construct a carbon-coated NASICON-type Li1.3Al0.3Ti1.7(PO4)3 nanofiber network (LATP@C) that serves as an integrated ionic-electronic scaffold within dry-processed Ni-rich cathodes. The one-dimensional LATP@C fibers form a continuous 3D percolation architecture that couples fast Li+ conduction from the NASICON core with efficient electron transport through the conformal carbon shell. Their rough, oxygen-functionalized surfaces further enhance electrolyte affinity, while the mechanically robust fibrous network bridges NCM811 secondary particles, suppressing crack initiation and preserving structural integrity during cycling. Benefiting from these collective effects, the LATP@C cathode with 100 mg cm−2 loading delivers 203 mA h g−1 at 0.1 C and maintains 96.7% capacity over 35 cycles at 0.2 C. Pouch cells incorporating 60 mg cm−2 LATP@C cathodes retain 80.5% capacity after 50 cycles, highlighting the practical viability of this design.