Submicron-sized cube-like α-Fe2O3 agglomerates as an anode material for Li-ion batteries

Zhang, Peng; Guo, Zaiping; Liu, Huan

doi:10.1016/j.electacta.2010.07.078

Cited by 44 publications

(23 citation statements)

References 20 publications

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“…Presently, various effective approaches have been introduced to boost the gas-sensing features of the p-type or n-type metal oxides based sensors involving the assembly of complex and multidimensional nanostructures 13 , the materialization of nanocomposites 14 , the loading of noble metal catalysts 15 and the aliovalent ions doping 16 . P-type nickel oxide (NiO) with 3.4 eV energy gap and n-type hematite ( α -Fe 2 O 3 ) with 2.0 eV energy gap are dissimilar imperative functional materials existing as various morphological structures 17 – 20 , which have received general attention because of their unique physical and chemical features leading to their great performance in wide range of applications including dye-sensitized solar cells 21 , 22 , catalysis 23 , 24 , gas sensors 25 , 26 , electrodes 27 , 28 , magnetic materials 29 , 30 and electrochemical supercapacitors 31 , 32 etc .…”

Section: Introductionmentioning

confidence: 99%

A two-step synthesis of nanosheet-covered fibers based on α-Fe2O3/NiO composites towards enhanced acetone sensing

Haq

Wen²,

Zhang

et al. 2018

Sci Rep

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A novel hierarchical heterostructures based on α-Fe2O3/NiO nanosheet-covered fibers were synthesized using a simple two-step process named the electrospinning and hydrothermal techniques. A high density of α-Fe2O3 nanosheets were uniformly and epitaxially deposited on a NiO nanofibers. The crystallinity, morphological structure and surface composition of nanostructured based on α-Fe2O3/NiO composites were investigated by XRD, SEM, TEM, EDX, XPS and BET analysis. The extremely branched α-Fe2O3/NiO nanosheet-covered fibers delivered an extremely porous atmosphere with huge specific surface area essential for superior gas sensors. Different nanostructured based on α-Fe2O3/NiO composites were also explored by adjusting the volume ratio of the precursors. The as-prepared samples based on α-Fe2O3/NiO nanocomposite sensors display apparently enhanced sensing characteristics, including higher sensing response, quick response with recovery speed and better selectivity towards acetone gas at lower operating temperature as compared to bare NiO nanofibers. The sensing response of S-2 based α-Fe2O3/NiO nanosheet-covered fibers were 18.24 to 100 ppm acetone gas at 169 °C, which was about 6.9 times higher than that of bare NiO nanofibers. The upgraded gas sensing performance of composites based on α-Fe2O3/NiO nanosheet-covered fibers might be ascribed to the exclusive morphologies with large surface area, p-n heterojunctions and the synergetic performance of α-Fe2O3 and NiO.

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Section: Introductionmentioning

confidence: 99%

A two-step synthesis of nanosheet-covered fibers based on α-Fe2O3/NiO composites towards enhanced acetone sensing

Haq

Wen²,

Zhang

et al. 2018

Sci Rep

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show abstract

“…Nickel oxide (NiO) and ferric oxide (α-Fe 2 O 3 ), both important versatile materials, have attracted enormous interests because of their potential applications in dye-sensitized solar cells 15 16 , lithium ion batteries 17 18 , electrochemical capacitors 19 20 , catalysts 21 22 , gas sensors 23 24 , etc. It has been demonstrated that the heterojunction nanostructures by combining NiO and α-Fe 2 O 3 can greatly enhance their application performance 25 26 .…”

mentioning

confidence: 99%

Design of α-Fe2O3 nanorods functionalized tubular NiO nanostructure for discriminating toluene molecules

Wang

et al. 2016

Sci Rep

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A novel tubular NiO nanostructure was synthesized by a facile and low-cost hydrothermal strategy and then further functionalized by decorating α-Fe2O3 nanorods. The images of electron microscopy indicated that the α-Fe2O3 nanorods were assembled epitaxially on the surfaces of NiO nanotubes to form α-Fe2O3/NiO nanotubes. As a proof-of-concept demonstration of the function, gas sensing devices were fabricated from as-prepared α-Fe2O3/NiO nanotubes, and showed enhanced gas response and excellent selectivity toward toluene, giving a response of 8.8 to 5 ppm target gas, which was about 7.8 times higher than that of pure NiO nanotubes at 275 °C. The improved gas sensing performance of α-Fe2O3/NiO nanotubes could be attributed to the unique tubular morphology features, p-n heterojunctions and the synergetic behavior of α-Fe2O3 and NiO.

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“…FeO, CoO, NiO, Cu 2 O, and their high-valence oxides) as anode materials of lithium ion batteries have received much attention since they were first proposed by Tarascon and co-workers [1][2][3][4][5]. These oxides can deliver reversible capacities twice higher than carbon-based materials even at high discharge-charge current densities [6][7][8][9][10][11][12][13][14][15][16][17][18], and among these oxides, NiO has some advantages, e.g. stable, easy to prepare, and inexpensive.…”

Section: Introductionmentioning

confidence: 98%

Electrochemical properties of NiO/Co–P nanocomposite as anode materials for lithium ion batteries

Huang

Yuan

Wang

et al. 2011

Journal of Alloys and Compounds

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Submicron-sized cube-like α-Fe2O3 agglomerates as an anode material for Li-ion batteries

Cited by 44 publications

References 20 publications

A two-step synthesis of nanosheet-covered fibers based on α-Fe2O3/NiO composites towards enhanced acetone sensing

A two-step synthesis of nanosheet-covered fibers based on α-Fe2O3/NiO composites towards enhanced acetone sensing

Design of α-Fe2O3 nanorods functionalized tubular NiO nanostructure for discriminating toluene molecules

Electrochemical properties of NiO/Co–P nanocomposite as anode materials for lithium ion batteries

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