Iron fluoride with excellent cycle performance synthesized by solvothermal method as cathodes for lithium ion batteries

Tan, Jinli; Liu, Li; Hu, Hai; Yang, Zhenhua; Guo, Haipeng; Wei, Qufu; Yi, Xin; Yan, Zichao; Zhou, Qian; Huang, Zhifeng; Shu, Hongbo; Yang, Xiukang; Wang, Xianyou

doi:10.1016/j.jpowsour.2013.11.004

Cited by 61 publications

(39 citation statements)

References 38 publications

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“…The SAED image in the inset of Figure 2b exhibits two ring patterns related to (220) and (112), which proves further the polycrystalline nature of FeF 3 · 0.33H 2 O. 40,41 To analyze the distribution of Fe, F, O and C elements in the FeF 3 · 0.33H 2 O@3D-OMCs nanocomposite, the EDX was examined as presented in Figures 2d-2g that all the elements are evenly distribution in FeF 3 · 0.33H 2 O@3D-OMCs nanocomposite. In contrast, it can be seen from Figures 2h-2i that the particle size of bare FeF 3 · 0.33H 2 O increases to ∼500 nm and agglomeration phenomenon is very serious.…”

Section: Resultsmentioning

confidence: 55%

Iron Fluoride Packaged into 3D Order Mesoporous Carbons as High-Performance Sodium-Ion Battery Cathode Material

Zhang

Wang

et al. 2018

J. Electrochem. Soc.

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The FeF 3 · 0.33H 2 O nanoparticles packaged into three-dimensional order mesoporous carbons (3D-OMCs) as cathode material of sodium-ion batteries (SIBs) was deliberately designed and fabricated by a facile nanocasting technique and mesoporous silica KIT-6 template. The structure, morphology, elemental distribution and electrochemical performance of FeF 3 · 0.33H 2 O@3D-OMCs nanocomposite are investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscope (TEM), energy-dispersive X-ray spectroscope (EDS), Raman spectroscopy and electrochemical measurement. The results show that the as-synthesized FeF 3 · 0.33H 2 O nanoparticles are perfectly packaged in 3D-OMCs matrix, and the size and morphology of FeF 3 · 0.33H 2 O nanoparticles can be effectively controlled. Furthermore, it has been found that the FeF 3 · 0.33H 2 O@3D-OMCs nanocomposite can deliver a high first discharge capacity of 386 mAh g −1 and excellent capacity reservation after 100 cycles at a rate of 20 mA g −1 in the voltage range of 1.0-4.0 V. Especially, even up to 100 mA g −1 , the discharge capacity is still as high as 201 mAh g −1 , indicating a remarkable rate capability. The excellent electrochemical properties of FeF 3 · 0.33H 2 O@3D-OMCs nanocomposite can be because the 3D mesoporous structure of 3D-OMCs can provide an expressway of electron transfer for Na + insertion/extraction, and alleviate the drastic volume variation of FeF 3 · 0. In recently years, lithium-ion batteries (LIBs) have been generally used as an effective energy storage approach in the consumer electronics and electric vehicles (EVs) because of their high energy density, long cycle life and environmentally friendly.1,2 However, the limited resource and high price of lithium salts restrict its further application and development, thus seeking alternative new energy materials have become a hot topic of concern and research. Sodium ion batteries (SIBs) have aroused considerable attention owing to the same high energy density as LIBs, abundant sodium resource, low price and appropriate redox potential for battery applications (E Na + /Na = −2.71 V only 0.3 V above that of lithium). [3][4][5] In addition, sodium, as the second lightest and smallest alkali metal next to lithium, is similar to lithium in physical and chemical properties.

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Section: Resultsmentioning

confidence: 55%

Iron Fluoride Packaged into 3D Order Mesoporous Carbons as High-Performance Sodium-Ion Battery Cathode Material

Zhang

Wang

et al. 2018

J. Electrochem. Soc.

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“…From these results, it is clear that FeF 3 /r-GO11 has improved rate capabilities compared to bare FeF 3 and FeF 3 /r-GO1.7. The rate performance of FeF 3 /r-GO11 is also comparable to those of porous FeF 3 and FeF 3 /OMC composites [20,39,42]. Bare FeF 3 , FeF 3 /r-GO1.7, and FeF 3 /r-GO11 recovered about 56, 81, and 94% of their initial capacities after the current rate was returned to 0.1C.…”

Section: Resultsmentioning

confidence: 58%

“…7(b). The curves are composed of an intercept at high frequency for the electrolyte resistance (R s ), a semicircle at mid frequency for the charge-transfer resistance (R ct ) at the interface of the electrode and electrolyte, and an inclined line at low frequency for the Warburg impedance (W o ) describing the lithium diffusion kinetics in the electrode [19,25,42]. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

FeF3 microspheres anchored on reduced graphene oxide as a high performance cathode material for lithium ion batteries

Jung

Song

Kim

et al. 2015

Journal of Alloys and Compounds

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“…Especially, iron fluoride has attracted great interests as a prospective new class of cathode materials, which exhibit high theoretical capacity (712 mAh g -1 for 3 etransfer), low cost, abundant sources, low toxicity, and high safety. Among numerous polymorphs of iron fluorides, such as FeF 3 , FeF 3 • 0.33H 2 O, FeF 2.5 • 0.5H 2 O, FeF 3 • 0.5H 2 O and FeF 3 • 3H 2 O, FeF 3 • 0.33H 2 O is of the most attention due to its unique tunnel structure which is greatly beneficial to the Na + storage performance [26][27][28][29] . Unfortunately, the high electro-negativity of fluorine induces a large band gap, and thus leading to a poor electronic conductivity, a very low actual capacity and fast capacity fading [30] .…”

Section: Introductionmentioning

confidence: 99%

Spherical FeF3•0.33H2O/MWCNTs nanocomposite with mesoporous structure as cathode material of sodium ion battery

Wei

Wang

Liu

et al. 2018

Journal of Energy Chemistry

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Iron fluoride with excellent cycle performance synthesized by solvothermal method as cathodes for lithium ion batteries

Cited by 61 publications

References 38 publications

Iron Fluoride Packaged into 3D Order Mesoporous Carbons as High-Performance Sodium-Ion Battery Cathode Material

Iron Fluoride Packaged into 3D Order Mesoporous Carbons as High-Performance Sodium-Ion Battery Cathode Material

FeF3 microspheres anchored on reduced graphene oxide as a high performance cathode material for lithium ion batteries

Spherical FeF3•0.33H2O/MWCNTs nanocomposite with mesoporous structure as cathode material of sodium ion battery

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