Dual Modification of Olivine LiFe_0.5Mn_0.5PO₄ Cathodes with Accelerated Kinetics for High-Rate Lithium-Ion Batteries

Industrial & Engineering Chemistry Research, Journal Year: 2023, Volume and Issue: 62(2), P. 1029 - 1034

Published: Jan. 3, 2023

Developing olivine-type lithium ferromanganese phosphates with high ionic/electronic conductivity is vital to promote their practical application in long-life and high-rate lithium-ion batteries (LIBs). Herein, we propose a dual modification strategy combining C-coating Nb-doping apply it enhance LiFe0.5Mn0.5PO4 cathode materials. The uniform compact layer successfully fabricates the high-speed conductive network among primary particles meantime prevents attack of electrolytes. strong Nb–O coordination can effectively accelerate ion diffusion electron transport within nanoparticles while suppressing Jahn–Teller effect Mn3+. modifications synergistically improve materials superior lithium-storage capacities 152 115 mAh g–1 at 0.1 5 C, respectively. Furthermore, exhibits an impressive cycling performance ultrahigh capacity retention 95.4% after 1000 cycles 1 C. These findings extend surface-to-bulk co-modification developing novel used high-performance LIBs.

Language: Английский

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Improving the lithium-ion diffusion and electrical conductivity of LiFePO4 cathode material by doping magnesium and multi-walled carbon nanotubes

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 947, P. 169680 - 169680

Published: March 15, 2023

Language: Английский

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Mn-doped LiFePO4@C as a high-performance cathode material for lithium-ion batteries

Particuology, Journal Year: 2024, Volume and Issue: 90, P. 418 - 428

Published: Feb. 2, 2024

Language: Английский

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Enhancing the Mn Redox Kinetics of LiMn_0.5Fe_0.5PO₄ Cathodes Through a Synergistic Co‐Doping with Niobium and Magnesium for Lithium‐Ion Batteries

Small, Journal Year: 2024, Volume and Issue: 20(47)

Published: Aug. 13, 2024

The concerns on the cost of lithium-ion batteries have created enormous interest LiFePO

Language: Английский

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Functionalized porous conductive carbon layer improves the low-temperature performance of LiFePO4 cathode material for lithium-ion batteries

Carbon, Journal Year: 2024, Volume and Issue: 229, P. 119483 - 119483

Published: July 22, 2024

Language: Английский

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Based on N, F, and P co-doping biomass carbon to construct 3D porous carbon coated LiFePO4 for preparing lithium-ion batteries

Journal of Industrial and Engineering Chemistry, Journal Year: 2024, Volume and Issue: 137, P. 376 - 386

Published: March 16, 2024

Language: Английский

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Upcycling of Low‐Value Cathode Materials from Spent Lithium‐Ion Battery to High‐Voltage Cathode with Ultrahigh Rate Capability and Reversibility

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract LiMn 2 O 4 and LiFePO materials are widely applied in electric vehicles energy storage. Currently, spent recycling is challenged by long process, high consumption, poor economy due to the indispensable metal separation their recycling. Aiming at this challenge, an upcycling of low‐value cathode high‐value high‐voltage lithium ferromanganese phosphate (LMFP) simple leaching hydrothermal reaction proposed, LMFP material with ultrahigh rate capability reversibility its homogenized element distribution, well‐defined nanorods particles, short Fe/Mn─O bond average Li─O length regenerated. The initial discharge capacity reaches 144.2 mAh g −1 87% retention after 1000 cycles 1 C. Even cycling 5 C, a 136.9 86.4% achieved cycles. Kinetics analysis characterizations regenerated further reveal fast diffusion ability stable structure. This work sheds light on potential value regeneration offers economic strategy for materials.

Language: Английский

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Hybrid Polymer Electrolyte Encased Cathode Particles Interface‐Based Core–Shell Structure for High‐Performance Room Temperature All‐Solid‐State Batteries

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 13(1)

Published: Nov. 29, 2022

Abstract A smooth interfacial contact between electrode and electrolyte, alleviation of dendrite formation, low internal resistance, preparation thin electrolyte (<20 µm) are the key challenging tasks in practical application Li 7 La 3 Zr 2 O 12 (LLZO)‐based solid‐state batteries (SSBs). This paper develops a unique strategy to reduce resistance by designing an interface‐based core–shell structure via direct integration Al‐LLZO ceramic nanofibers incorporated poly(vinylidene fluoride)/LiTFSI on surface porous cathode (HPEIC). yields ultrathin solid polymer with thickness µm. The integrated HPEIC/Li SSB LiFePO 4 /C exhibits initial specific capacity 166 mAh g −1 at 0.1 C 159 retention 100% after 120 cycles 0.5 (25 °C). LiNi 0.8 Mn Co delivers good discharge 134 C. rational design outperforms conventional assembly cells using free‐standing electrolytes capacity, rate performance. proposed is simple, cost‐effective, robust, scalable manufacturing, which essential for applicability SSBs.

Language: Английский

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The recovery of high purity iron phosphate from the spent lithium extraction slag by a simple phosphoric acid pickling

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 323, P. 124358 - 124358

Published: June 21, 2023

Language: Английский

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Boosting both electronic and ionic conductivities via incorporation of molybdenum for LiFe0.5Mn0.5PO4 cathode in lithium-ion batteries

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 989, P. 174396 - 174396

Published: April 4, 2024

Language: Английский

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