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<p>Developing cathodes that simultaneously deliver high capacity, superior rate capability, and long-term cycling stability remains a major challenge in lithium-ion batteries. Here, we report a high-performance textile cathode constructed via interfacial interaction-mediated assembly of high-energy porphyrin&#xa0;(PP) ligand-stabilized LiFePO<sub>4</sub> nanoparticles (LFP NPs). For this, 19&#xa0;nm LFP NPs with olivine-type intercalation mechanism were covalently integrated with amine-functionalized PP to enable multi-electron redox activity, followed by encapsulation with multi-walled carbon nanotube (MWCNT) multilayers. Subsequent thermal annealing transformed the MWCNT layers into a covalently cross-linked conductive network. As a result, the textile cathode delivers an unprecedented specific capacity of ~260&#xa0;mAh&#xa0;g<sup>−1</sup> at ~0.1&#xa0;C, excellent rate capability, and retains over 93% of its initial capacity after 2,000 cycles at 1 C with nearly 100% Coulombic efficiency. This work highlights interfacial interaction-mediated ligand assembly as a powerful strategy for next-generation high-capacity and durable cathodes.</p>

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Redox-Active Ligand-Stabilized Lithium Iron Phosphate Nanoparticles for High-Performance Lithium-Ion Battery Cathode with High Capacities and Long-Term Stability

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月30日

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  • Jiwon Bok,
  • Jeongyeon Ahn,
  • Bogeun Park,
  • Donghyeon Nam,
  • Hee Seung Ryu,
  • Uijun Lee,
  • Jaeyeong Jang,
  • Shihyun Chang,
  • Sungha Choi,
  • Minseong Kwon,
  • Woojae Chang,
  • Du Yeol Ryu,
  • Daegun Kim,
  • Hee-Dae Lim,
  • Byung-Hyun Kim,
  • Yongmin Ko,
  • Jinhan Cho

摘要

Developing cathodes that simultaneously deliver high capacity, superior rate capability, and long-term cycling stability remains a major challenge in lithium-ion batteries. Here, we report a high-performance textile cathode constructed via interfacial interaction-mediated assembly of high-energy porphyrin (PP) ligand-stabilized LiFePO4 nanoparticles (LFP NPs). For this, 19 nm LFP NPs with olivine-type intercalation mechanism were covalently integrated with amine-functionalized PP to enable multi-electron redox activity, followed by encapsulation with multi-walled carbon nanotube (MWCNT) multilayers. Subsequent thermal annealing transformed the MWCNT layers into a covalently cross-linked conductive network. As a result, the textile cathode delivers an unprecedented specific capacity of ~260 mAh g−1 at ~0.1 C, excellent rate capability, and retains over 93% of its initial capacity after 2,000 cycles at 1 C with nearly 100% Coulombic efficiency. This work highlights interfacial interaction-mediated ligand assembly as a powerful strategy for next-generation high-capacity and durable cathodes.