Preparation of anhydrous iron fluoride with porous fusiform structure and its application for Li-ion batteries

Sun, Hongxu; Zhou, Haidong; Xu, Zhanglin; Ding, Jing; Yang, Juan; Zhou, Xiangyang

doi:10.1016/j.micromeso.2017.06.033

Cited by 16 publications

(8 citation statements)

References 23 publications

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“…To better understand the electrochemical performances of these two samples, EIS tests were performed and shown in Figure 4f. Each profile is composed of a sloped line in the low‐frequency region and a semicircle in the high‐frequency range, which reflect the Li + diffusion impedance in the solid electrode and the charge transfer resistance ( R ct ) at the electrolyte/electrode interface, respectively [17,32] …”

Section: Resultsmentioning

confidence: 99%

N, S Co‐Doped Porous Carbon from Antibiotic Bacteria Residues Enables a High‐Performance FeF₃ ⋅ 0.33H₂O Cathode for Li‐Ion Batteries

et al. 2020

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FeF3 ⋅ 0.33H2O is considered as a potential candidate cathode material owing to the special structure with one‐dimension (1D) tunnel. However, its practical application is hindered by the poor electric conductivity. In this work, FeF3 ⋅ 0.33H2O embedded into N, S co‐doped porous carbon (NSPC) derived from antibiotic bacterial residues was synthesized by a facile wet‐impregnation method. Close contact of FeF3 ⋅ 0.33H2O nanoparticles with NSPC can provide the rapid electron conduction channel and keep the structural stability, which endows that FeF3 ⋅ 0.33H2O@NSPC electrode achieves excellent cycling performance with a reversible capacity of 164.5 mAh g−1 at 40 mA g−1 after 100 cycles between 2.0 and 4.5 V and good rate performance. This study offers a new method for high‐value utilization of antibiotic bacteria residues (ABRs) for application in energy storage.

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Section: Resultsmentioning

confidence: 99%

N, S Co‐Doped Porous Carbon from Antibiotic Bacteria Residues Enables a High‐Performance FeF₃ ⋅ 0.33H₂O Cathode for Li‐Ion Batteries

et al. 2020

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“…[ 3c ] The peaks at 23.8°, 33.4°, 40.1°, 48.7°, and 54.2° of the FeF 3 @C‐Asphalt composite corresponds to the (012), (104), (113), (024), and (116) plane of FeF 3 , which manifest the implant and fluorination of Fe 3 O 4 . [ 24 ] Additionally, the surface chemical element information from the XPS spectra also confirms the existence of F, Fe, C, and O, respectively (Figure S6a, Supporting Information). The Fe:F radio is calculated to be 1:3, which is consistent with the XRD results (Table S1, Supporting Information).…”

Section: Resultsmentioning

confidence: 78%

Hetero‐Packing Nanostructures of Iron (III) Fluoride Nanocomposite Cathode for High‐Rate and Long‐Life Rechargeable Lithium‐Ion Batteries

Guan

Zhao

Zhou

et al. 2023

Advanced Energy Materials

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High‐performance metal fluoride cathodes are crucial to design ultrahigh‐capacity lithium metal batteries for taking part in the next‐generation energy storage market. However, their insulating nature and sluggish reaction kinetics result in voltage hysteresis, low‐rate capability, and rapid capacity degradation. Herein, a generalizable one‐step melt synthesis approach is reported to construct hetero‐packing nanostructures of FeF3@C‐Asphalt nanocomposites, where ultrafine FeF3 nanoparticles are homogeneously covered by a high conductive carbon framework. By the electrochemical kinetics calculation and multiphysics simulations, this FeF3@C‐Asphalt nanocomposites consist of ultrafine nanoparticles and a constrained carbon framework, offering a high tap density (1.8 g cm−3), significantly improved conductivity, and enhanced charge pathways, and thereby enabling the fast electron transport, rapid ion migration, depressed electrode internal stress, and mitigated volume expansion. As a result, the optimized FeF3@C‐Asphalt cathode delivers a high capacity of 517 mAh g−1, high cyclic stability of 87.5% after 1000 cycles under 5 A g−1 (10 C), and excellent capacity retention of 77% from 0.5 A g−1 to 10 A g−1 (20 C, 250 mAh g−1). The work provides an easy‐to‐operate and low‐cost approach to accomplish high cyclic stability metal fluoride‐lithium batteries, which will guide the development of fast‐charging ultrahigh‐capacity cathode materials for the new energy industry.

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“…045-1062), and no peak of FeF 3 •0.33H 2 O can be observed. Previous reports indicated that FeF 3 •3H 2 O was dehydrated to form small nanoparticles at 180°C, followed by the formation of FeF 3 •0.33H 2 O nanorods [21][22][23]. The presence of a small amount of glucose partially reduced Fe 3+ to Fe 2+ (Fig.…”

Section: Structure and Morphologymentioning

confidence: 83%

Artificial cathode solid electrolyte interphase to endow highly stable lithium storage of FeF2 nanocrystals

Chen

Zhao

et al. 2021

Sci. China Mater.

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Iron difluoride (FeF 2 ) is considered a highcapacity cathode material for lithium-ion batteries. However, its specific capacity and stability are limited by the poor electrochemical kinetics of conversion reactions. Herein, the conversion reaction is confined in a localized nanosized space by encapsulating FeF 2 nanoparticles in polymer gelatin. The FeF 2 nanocrystal-coated polyvinylidene fluoride-based layer (defined as FeF 2 @100%G-40%P) was synthesized by glucoseassisted in-situ gelatinization to construct an artificial cathode solid electrolyte interphase via a solvothermal process. Thanks to the improved kinetics of the localized conversion reaction, the obtained FeF 2 @100%G-40%P electrodes show good cyclic stability (313 mA h g −1 after 150 cycles at 100 mA g −1 , corresponding to a retention of 80%) and a high rate performance (186.6 mA h g −1 at 500 mA g −1 ).

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Preparation of anhydrous iron fluoride with porous fusiform structure and its application for Li-ion batteries

Cited by 16 publications

References 23 publications

N, S Co‐Doped Porous Carbon from Antibiotic Bacteria Residues Enables a High‐Performance FeF₃ ⋅ 0.33H₂O Cathode for Li‐Ion Batteries

N, S Co‐Doped Porous Carbon from Antibiotic Bacteria Residues Enables a High‐Performance FeF₃ ⋅ 0.33H₂O Cathode for Li‐Ion Batteries

Hetero‐Packing Nanostructures of Iron (III) Fluoride Nanocomposite Cathode for High‐Rate and Long‐Life Rechargeable Lithium‐Ion Batteries

Artificial cathode solid electrolyte interphase to endow highly stable lithium storage of FeF2 nanocrystals

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Preparation of anhydrous iron fluoride with porous fusiform structure and its application for Li-ion batteries

Cited by 16 publications

References 23 publications

N, S Co‐Doped Porous Carbon from Antibiotic Bacteria Residues Enables a High‐Performance FeF3 ⋅ 0.33H2O Cathode for Li‐Ion Batteries

N, S Co‐Doped Porous Carbon from Antibiotic Bacteria Residues Enables a High‐Performance FeF3 ⋅ 0.33H2O Cathode for Li‐Ion Batteries

Hetero‐Packing Nanostructures of Iron (III) Fluoride Nanocomposite Cathode for High‐Rate and Long‐Life Rechargeable Lithium‐Ion Batteries

Artificial cathode solid electrolyte interphase to endow highly stable lithium storage of FeF2 nanocrystals

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N, S Co‐Doped Porous Carbon from Antibiotic Bacteria Residues Enables a High‐Performance FeF₃ ⋅ 0.33H₂O Cathode for Li‐Ion Batteries

N, S Co‐Doped Porous Carbon from Antibiotic Bacteria Residues Enables a High‐Performance FeF₃ ⋅ 0.33H₂O Cathode for Li‐Ion Batteries