Self-templated fabrication of micro/nano structured iron fluoride for high-performance lithium-ion batteries

Jingru Zhai; Zhengyu Lei; David Rooney; Huaguo Wang; Kening Sun

doi:10.1016/j.jpowsour.2018.06.048

Self-templated fabrication of micro/nano structured iron fluoride for high-performance lithium-ion batteries

Jingru Zhai, Zhengyu Lei, David Rooney, Huaguo Wang, Kening Sun^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

Hexagonal-tungsten-bronze-type (abbreviated as HTB) FeF₃·0.33H₂O has been recognized as a promising high-rate cathode material for lithium-ion batteries. However, rational engineering of advanced structures is highly desirable yet challenging to activate the insulating FeF₃·0.33H₂O in practical application. For the first time, a facile and economical solvothermal strategy is demonstrated to synthesize micro/nanostructured FeF₃·0.33H₂O through the self-templated morphology evolution and topotactic phase transformation of commercial FeF₃·3H₂O precursor. Benefiting from the hierarchical structure, the as-prepared FeF₃·0.33H₂O exhibits enhanced rate capability and cycle stability compared with the bulk FeF₃·0.33H₂O obtained through traditional heat treatment of FeF₃·3H₂O. More interestingly, simple adjustment of the synthesis solvent or temperature enables the fabrication of several iron-based fluorides with uniquely hierarchical morphology, which are still hard to be synthesized under the existing methods.

Original language	English
Pages (from-to)	371-378
Number of pages	8
Journal	Journal of Power Sources
Volume	396
DOIs	https://doi.org/10.1016/j.jpowsour.2018.06.048
Publication status	Published - 31 Aug 2018
Externally published	Yes

Keywords

FeF·0.33HO
Lithium-ion batteries
Micro/nano structure
Self-template

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2018.06.048

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@article{5c8ecf5637f145728d98fc1f1cfcde33,

title = "Self-templated fabrication of micro/nano structured iron fluoride for high-performance lithium-ion batteries",

abstract = "Hexagonal-tungsten-bronze-type (abbreviated as HTB) FeF3·0.33H2O has been recognized as a promising high-rate cathode material for lithium-ion batteries. However, rational engineering of advanced structures is highly desirable yet challenging to activate the insulating FeF3·0.33H2O in practical application. For the first time, a facile and economical solvothermal strategy is demonstrated to synthesize micro/nanostructured FeF3·0.33H2O through the self-templated morphology evolution and topotactic phase transformation of commercial FeF3·3H2O precursor. Benefiting from the hierarchical structure, the as-prepared FeF3·0.33H2O exhibits enhanced rate capability and cycle stability compared with the bulk FeF3·0.33H2O obtained through traditional heat treatment of FeF3·3H2O. More interestingly, simple adjustment of the synthesis solvent or temperature enables the fabrication of several iron-based fluorides with uniquely hierarchical morphology, which are still hard to be synthesized under the existing methods.",

keywords = "FeF·0.33HO, Lithium-ion batteries, Micro/nano structure, Self-template",

author = "Jingru Zhai and Zhengyu Lei and David Rooney and Huaguo Wang and Kening Sun",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = aug,

day = "31",

doi = "10.1016/j.jpowsour.2018.06.048",

language = "English",

volume = "396",

pages = "371--378",

journal = "Journal of Power Sources",

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T1 - Self-templated fabrication of micro/nano structured iron fluoride for high-performance lithium-ion batteries

AU - Zhai, Jingru

AU - Lei, Zhengyu

AU - Rooney, David

AU - Wang, Huaguo

AU - Sun, Kening

PY - 2018/8/31

Y1 - 2018/8/31

N2 - Hexagonal-tungsten-bronze-type (abbreviated as HTB) FeF3·0.33H2O has been recognized as a promising high-rate cathode material for lithium-ion batteries. However, rational engineering of advanced structures is highly desirable yet challenging to activate the insulating FeF3·0.33H2O in practical application. For the first time, a facile and economical solvothermal strategy is demonstrated to synthesize micro/nanostructured FeF3·0.33H2O through the self-templated morphology evolution and topotactic phase transformation of commercial FeF3·3H2O precursor. Benefiting from the hierarchical structure, the as-prepared FeF3·0.33H2O exhibits enhanced rate capability and cycle stability compared with the bulk FeF3·0.33H2O obtained through traditional heat treatment of FeF3·3H2O. More interestingly, simple adjustment of the synthesis solvent or temperature enables the fabrication of several iron-based fluorides with uniquely hierarchical morphology, which are still hard to be synthesized under the existing methods.

AB - Hexagonal-tungsten-bronze-type (abbreviated as HTB) FeF3·0.33H2O has been recognized as a promising high-rate cathode material for lithium-ion batteries. However, rational engineering of advanced structures is highly desirable yet challenging to activate the insulating FeF3·0.33H2O in practical application. For the first time, a facile and economical solvothermal strategy is demonstrated to synthesize micro/nanostructured FeF3·0.33H2O through the self-templated morphology evolution and topotactic phase transformation of commercial FeF3·3H2O precursor. Benefiting from the hierarchical structure, the as-prepared FeF3·0.33H2O exhibits enhanced rate capability and cycle stability compared with the bulk FeF3·0.33H2O obtained through traditional heat treatment of FeF3·3H2O. More interestingly, simple adjustment of the synthesis solvent or temperature enables the fabrication of several iron-based fluorides with uniquely hierarchical morphology, which are still hard to be synthesized under the existing methods.

KW - FeF·0.33HO

KW - Lithium-ion batteries

KW - Micro/nano structure

KW - Self-template

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U2 - 10.1016/j.jpowsour.2018.06.048

DO - 10.1016/j.jpowsour.2018.06.048

M3 - Article

AN - SCOPUS:85048519559

SN - 0378-7753

VL - 396

SP - 371

EP - 378

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Self-templated fabrication of micro/nano structured iron fluoride for high-performance lithium-ion batteries

Abstract

Keywords

UN SDGs

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