Performance of 3D Network-Structured LiFePO4@Li3V2(PO4)3/Carbon Nanofibers via Coaxial Electrospinning as Self-Supporting Cathode for Lithium-Ion Batteries DOI Open Access
Ruixia Chu, Hongtao Zhang, Wanyou Huang

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(9), P. 1969 - 1969

Published: April 26, 2025

Lithium-ion batteries (LIBs) with high power, capacity, and support for fast charging are increasingly favored by consumers. As a commercial electrode material power batteries, LiFePO4 was limited from further wide application due to its low conductivity lithium-ion diffusion rate. The development of advanced architectures integrating rational conductive networks optimized ion transport pathways represents critical frontier in optimizing the performance cathode materials. In this paper, novel self-supporting (designated as LFP@LVP-CES) synthesized through an integrated coaxial electrospinning controlled pyrolysis strategy. This methodology directly converts LiFePO4, Li3V2(PO4)3, polyacrylonitrile (PAN)) into flexible, binder-free cathodes hierarchical structural organization. 3D carbon nanofiber (CNF) matrix synergistically integrates (Li/Fe/POx) Li3V2(PO4)3 (Li/V/POx) nanoparticles, where CNFs act scaffold enhance electron transport, while POx polyanionic frameworks stabilize Li+ pathways. Morphological characterizations (SEM TEM) revealed cross-connected (diameter: 250 ± 50 nm) uniformly embedded active particles. Electrochemical evaluations demonstrated that LFP@LVP-CES delivers initial specific capacity 165 mAh·g-1 at 0.1 C, maintaining 80 5 C. Notably, exhibited exceptional rate capability cycling stability, demonstrating 96% recovery after high-rate upon returning along 97% retention over 200 cycles 1 Detailed kinetic analysis EIS significantly reduced Rct increased diffusion. superior electrochemical can be attributed synergistic effects between network architecture dual Compared traditional coating processes high-temperature calcination, preparation controllable low-temperature some extent avoid introduction harmful substances reduce raw consumption emissions. original integration strategy establishes paradigm designing freestanding design combined bimodal material, providing insights next-generation energy storage systems.

Language: Английский

Performance of 3D Network-Structured LiFePO4@Li3V2(PO4)3/Carbon Nanofibers via Coaxial Electrospinning as Self-Supporting Cathode for Lithium-Ion Batteries DOI Open Access
Ruixia Chu, Hongtao Zhang, Wanyou Huang

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(9), P. 1969 - 1969

Published: April 26, 2025

Lithium-ion batteries (LIBs) with high power, capacity, and support for fast charging are increasingly favored by consumers. As a commercial electrode material power batteries, LiFePO4 was limited from further wide application due to its low conductivity lithium-ion diffusion rate. The development of advanced architectures integrating rational conductive networks optimized ion transport pathways represents critical frontier in optimizing the performance cathode materials. In this paper, novel self-supporting (designated as LFP@LVP-CES) synthesized through an integrated coaxial electrospinning controlled pyrolysis strategy. This methodology directly converts LiFePO4, Li3V2(PO4)3, polyacrylonitrile (PAN)) into flexible, binder-free cathodes hierarchical structural organization. 3D carbon nanofiber (CNF) matrix synergistically integrates (Li/Fe/POx) Li3V2(PO4)3 (Li/V/POx) nanoparticles, where CNFs act scaffold enhance electron transport, while POx polyanionic frameworks stabilize Li+ pathways. Morphological characterizations (SEM TEM) revealed cross-connected (diameter: 250 ± 50 nm) uniformly embedded active particles. Electrochemical evaluations demonstrated that LFP@LVP-CES delivers initial specific capacity 165 mAh·g-1 at 0.1 C, maintaining 80 5 C. Notably, exhibited exceptional rate capability cycling stability, demonstrating 96% recovery after high-rate upon returning along 97% retention over 200 cycles 1 Detailed kinetic analysis EIS significantly reduced Rct increased diffusion. superior electrochemical can be attributed synergistic effects between network architecture dual Compared traditional coating processes high-temperature calcination, preparation controllable low-temperature some extent avoid introduction harmful substances reduce raw consumption emissions. original integration strategy establishes paradigm designing freestanding design combined bimodal material, providing insights next-generation energy storage systems.

Language: Английский

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