Multicore–shell iron fluoride@carbon microspheres as a long-life cathode for high-energy lithium batteries

Jiang, Ziang; Wang, Yujie; Chen, Xuanfeng; Chu, Fulu; Jiang, Xuansi; Kwofie, Felix; Pei, Qianfan; Luo, Shunrui; Arbiol, Jordi; Wu, Feixiang

doi:10.1039/d3ta05054h

Cited by 8 publications

(1 citation statement)

References 49 publications

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“…Incorporation of active materials into ordered aggregates or single crystals by physical or chemical methods can shorten the diffusion distance of lithium ions and increase the effective contact area with electrolyte [209]. Examples include nanofibers [210,211], nanosheets [200,212], nanoflowers [42,52,213,214], nanorods [105,[215][216][217], micron-nano-spheres [149,[218][219][220][221][222][223][224], microcubes [225] and core-shell or hollow structures, etc [97,144,[226][227][228][229][230][231][232]. Fu et al synthesized FeF 3 /C composite nanofibers by electrospinning with iron acetylacetonate (C 15 H 21 FeO 6 ) as the iron source and polyacrylonitrile (PAN) as the carbon source as shown in figure 17(a).…”

Section: Morphological Regulationmentioning

confidence: 99%

Recent advances of metal fluoride compounds cathode materials for lithium ion batteries: a review

Gao,

Li,

Hua

et al. 2024

Mater. Futures

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As the most successful new energy storage device developed in recent decades, lithium-ion batteries (LIBs) are ubiquitous in the modern society. However, current commercial LIBs comprising mainly intercalated cathode materials are limited by the theoretical energy density which cannot meet the high storing energy demanded by renewable applications. Compared to intercalation-type cathode materials, low-cost conversion-type cathode materials with a high theoretical specific capacity are expected to boost the overall energy of LIBs. Among the different conversion cathode materials, metal fluorides have become a popular research subject for their environmental friendliness, low toxicity, wide voltage range, and high theoretical specific capacity. In this review, we compare the energy storage performance of intercalation and conversion cathode materials based on thermodynamic calculation and summarize the main challenges. The common conversion-type cathode materials are described and their respective reaction mechanisms are discussed. In particular, the structural flaws and corresponding solutions and strategies are described. Finally, we discussed the prospective of metal fluorides and other conversion cathode materials to guide further research in this important field.

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Section: Morphological Regulationmentioning

confidence: 99%

Recent advances of metal fluoride compounds cathode materials for lithium ion batteries: a review

Gao,

Li,

Hua

et al. 2024

Mater. Futures

View full text Add to dashboard Cite

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High‐Performance Yolk‐Shell Structured Silicon‐Carbon Composite Anode Preparation via One‐Step Gas‐Phase Deposition and Etching Technique

Zhou,

Xiao,

Pang

et al. 2024

Adv Funct Materials

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For producing high‐capacity silicon (Si) anodes, a combined gas‐phase deposition and etching technique is developed to construct yolk‐shell structured silicon‐carbon composites. As a novel etching agent in battery field, NF3 is applied to selectively etch Si to tailor the architecture. Si particles as self‐sacrificed precursor have no need to build artificial or complex templates in advance, thereby greatly simplifying fabrication process and showcasing practicality. As a result, yolk‐shell structured silicon‐carbon composites are successfully fabricated in a single step. Sufficient buffer space between Si and carbon layer accommodates the significant expansion of Si during lithiation, preventing fracture of the carbon layer, which greatly improves service life of Si‐based anodes. Moreover, the refined particle size of Si and abundant pores in inner Si cores enhance the lithiation and de‐lithiation kinetic. Even with a high Si loading of 3.9 mg cm−2, the produced anode exhibits a superior areal capacity of 16.3 mAh cm−2 at 0.2 mA cm−2. Furthermore, at a high current density of 4 A g−1, it demonstrates an excellent capacity of 1114 mAh g−1 after 1000 cycles with a capacity retention of 96.3%. Additionally, with pre‐lithiation, it is successfully paired with an iron trifluoride cathode to construct high‐energy lithium‐ion batteries.

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Nano-silicon embedded in 3D honeycomb carbon frameworks as a high-performance lithium-ion-battery anode

Zhou,

Pang,

et al. 2024

Carbon

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Multicore–shell iron fluoride@carbon microspheres as a long-life cathode for high-energy lithium batteries

Abstract: The study of multi-electron conversion cathodes is an important direction for developing next-generation rechargeable batteries. Iron fluoride (FeF3), in particular, has a high theoretical specific capacity (712 mAh g-1) and...

Cited by 8 publications

References 49 publications

Recent advances of metal fluoride compounds cathode materials for lithium ion batteries: a review

Recent advances of metal fluoride compounds cathode materials for lithium ion batteries: a review

High‐Performance Yolk‐Shell Structured Silicon‐Carbon Composite Anode Preparation via One‐Step Gas‐Phase Deposition and Etching Technique

Nano-silicon embedded in 3D honeycomb carbon frameworks as a high-performance lithium-ion-battery anode

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