Y–F co-doping behavior of LiFePO<sub>4</sub>/C nanocomposites for high-rate lithium-ion batteries

Wang, Shaoyi; Lai, Anjie; Huang, Dequan; Chu, Youqi; Hu, Sun; Pan, Qichang; Liu, Zhiheng; Zheng, Fenghua; Huang, Youguo; Li, Qingyu

doi:10.1039/d0nj06081j

Cited by 32 publications

(8 citation statements)

References 52 publications

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“…Nevertheless, it seems LFP in the co-fired LFP/LATP composite cathode could be activated by charge-discharge because taking out of Li-ions allows higher transportations of both ions and electrons within LFP. [73,74] Therefore, more active sites are available for the next chargedischarge cycle until a steady state is reached. The cell with discharge cut-off voltage at 2.2 V has the same trend of increasing capacity until the 4th cycle (Figure 4e,f).…”

Section: Electrochemical Performance Of Co-fired Lfp/latp Composite C...mentioning

confidence: 99%

Active Interphase Enables Stable Performance for an All‐Phosphate‐Based Composite Cathode in an All‐Solid‐State Battery

Liu

Windmüller

et al. 2022

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High interfacial resistance and unstable interphase between cathode active materials (CAMs) and solid‐state electrolytes (SSEs) in the composite cathode are two of the main challenges in current all‐solid‐state batteries (ASSBs). In this work, the all‐phosphate‐based LiFePO4 (LFP) and Li1.3Al0.3Ti1.7(PO4)3 (LATP) composite cathode is obtained by a co‐firing technique. Benefiting from the densified structure and the formed redox‐active Li3–xFe2–x–yTixAly(PO4)3 (LFTAP) interphase, the mixed ion‐ and electron‐conductive LFP/LATP composite cathode facilitates the stable operation of bulk‐type ASSBs in different voltage ranges with almost no capacity degradation upon cycling. Particularly, both the LFTAP interphase and LATP electrolyte can be activated. The cell cycled between 4.1 and 2.2 V achieves a high reversible capacity of 2.8 mAh cm–2 (36 µA cm–2, 60 °C). Furthermore, it is demonstrated that the asymmetric charge/discharge behaviors of the cells are attributed to the existence of the electrochemically active LFTAP interphase, which results in more sluggish Li+ kinetics and more expansive LFTAP plateaus during discharge compared with that of charge. This work demonstrates a simple but effective strategy to stabilize the CAM/SSE interface in high mass loading ASSBs.

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Section: Electrochemical Performance Of Co-fired Lfp/latp Composite C...mentioning

confidence: 99%

Active Interphase Enables Stable Performance for an All‐Phosphate‐Based Composite Cathode in an All‐Solid‐State Battery

Liu

Windmüller

et al. 2022

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“…Another idea of dual‐layer coating is that the inner layer with high ionic conductivity can tightly immobilize on the cathode surface and the outer layer function as an isolated layer from the electrolyte. [ 196,198,199 ] Li et al. [ 199 ] coated NCM with Li x Ni 1‐ y Fe y O 2 and NiFe 2 O 4 using a straightforward wet chemical method ( Figure a).…”

Section: Cathode For Lithium/sodium‐ion Batteriesmentioning

confidence: 99%

Nickel‐Based Materials for Advanced Rechargeable Batteries

Zhou

Guo

Zhang

et al. 2021

Adv Funct Materials

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The rapid development of electrochemical energy storage (EES) devices requires multi‐functional materials. Nickel (Ni)‐based materials are regarded as promising candidates for EES devices owing to their unique performance characteristics, low cost, abundance, and environmental friendliness. This review summarizes the scientific advances of Ni‐based materials for rechargeable batteries since 2018, including lithium‐ion/sodium‐ion/potassium‐ion batteries (LIBs/SIBs/PIBs), lithium–sulfur batteries (LSBs), Ni‐based aqueous batteries, and metal–air batteries (MABs). The Ni‐based materials are mainly classified by the various roles of anodes and cathodes for LIBs and SIBs, cathode hosts and separators for LSBs, cathodes for Ni‐based aqueous batteries, and catalysts for MABs, focusing on the relationship between the compositions, structures, and electrochemical performance. Finally, the challenges and prospects of Ni‐based materials for rechargeable batteries are briefly discussed.

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“…The high volumetric energy density of 427 W h L −1 under 60C was achieved. Wang et al 70 synthesized lithium iron phosphate (LFP) with Y–F co-doping. It was observed that the electronic conductivity increased upon doping with F owing to the rearrangement of the PO 4 3+ electron cloud.…”

Section: Electrodes For Li-ion Batteriesmentioning

confidence: 99%

Progress in electrode and electrolyte materials: path to all-solid-state Li-ion batteries

Sharma

Sharma²,

Gaur

et al. 2022

Energy Adv.

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Y–F co-doping behavior of LiFePO₄/C nanocomposites for high-rate lithium-ion batteries

Abstract: Lithium iron phosphate (LFP) has become one of the current mainstream cathode materials due to its high safety and low price. Most methods (e.g. ion doping, carbon coating and particle...

Cited by 32 publications

References 52 publications

Active Interphase Enables Stable Performance for an All‐Phosphate‐Based Composite Cathode in an All‐Solid‐State Battery

Active Interphase Enables Stable Performance for an All‐Phosphate‐Based Composite Cathode in an All‐Solid‐State Battery

Nickel‐Based Materials for Advanced Rechargeable Batteries

Progress in electrode and electrolyte materials: path to all-solid-state Li-ion batteries

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Y–F co-doping behavior of LiFePO4/C nanocomposites for high-rate lithium-ion batteries

Abstract: Lithium iron phosphate (LFP) has become one of the current mainstream cathode materials due to its high safety and low price. Most methods (e.g. ion doping, carbon coating and particle...

Cited by 32 publications

References 52 publications

Active Interphase Enables Stable Performance for an All‐Phosphate‐Based Composite Cathode in an All‐Solid‐State Battery

Active Interphase Enables Stable Performance for an All‐Phosphate‐Based Composite Cathode in an All‐Solid‐State Battery

Nickel‐Based Materials for Advanced Rechargeable Batteries

Progress in electrode and electrolyte materials: path to all-solid-state Li-ion batteries

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Product

Resources

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Y–F co-doping behavior of LiFePO₄/C nanocomposites for high-rate lithium-ion batteries