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Vol. 19 (2027)

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

https://doi.org/10.1007/s40820-026-02313-6
Jiwon Bok
Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
Jeongyeon Ahn
Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
Bogeun Park
Department of Applied Chemistry, Hanyang University ERICA, Ansan 15588, Republic of Korea
Donghyeon Nam
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta 30332, USA
Hee Seung Ryu
Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
Uijun Lee
Department of Battery Engineering, Hanyang University, Seoul 04763, Republic of Korea
Jaeyeong Jang
KU‑KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
Shihyun Chang
Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
Sungha Choi
Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
Minseong Kwon
Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
Woojae Chang
Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
Du Yeol Ryu
Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
Daegun Kim
School of Chemical, Biological and Battery Engineering, Gachon University, Seongnam 13120, Republic of Korea
Hee‑Dae Lim
Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
Byung‑Hyun Kim
Department of Applied Chemistry, Hanyang University ERICA, Ansan 15588, Republic of Korea
Yongmin Ko
Division of Energy and Environmental Technology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Materials Research Institute, Daegu 42988, Republic of Korea
Jinhan Cho
Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea

Corresponding Author: Jinhan Cho

jinhan71@korea.ac.kr

Nano-Micro Letters, Vol. 19 (2027), Article Number: 12

Abstract

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.


Highlights:
1 High-energy porphyrin ligand-stabilized LiFePO4 (LFP) nanoparticles act as cathode components delivering high capacity and outstanding cycling stability.
2 Interfacial interaction–mediated assembly effectively prevent the dissolution of porphyrin in electrolyte solution.
3 The specific capacity and stability of cathodes based on high-energy LFP nanoparticles surpass those of traditional Ni-rich oxide and LFP cathodes.

Keywords

Rechargeable energy storage Lithium-ion battery High-energy lithium iron phosphate
Bok, Jiwon, 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, and Jinhan Cho. 2026. “Redox-Active Ligand-Stabilized Lithium Iron Phosphate Nanoparticles for High-Performance Lithium-Ion Battery Cathode With High Capacities and Long-Term Stability”. Nano-Micro Letters 19 (July):12. https://doi.org/10.1007/s40820-026-02313-6.
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