Polypyrrole layer coated MnOx/Fe2O3 nanotubes with enhanced electrochemical performance for lithium ion batteries

Jin, Rencheng; Wang, Qingyao; Li, Honghao; Ma, Yinfa; Sun, Yexian; Liu, Guihua

doi:10.1016/j.apsusc.2017.01.120

Cited by 29 publications

(7 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a consequence, the reversibility of the electrode increased. Similar results can also be observed in β-MnO 2 /α-Fe 2 O 3 , Fe 2 O 3 /SnO 2 , and other metal oxide electrodes. − The cycling performances of the sandwichlike CoS x @NC@Sb electrode, CoS x @NC–Sb composites, ultrathin CoS x , and CoS x @C electrodes are presented in Figure e at a current density of 0.1 A g –1 . As expected, the sandwichlike CoS x @NC@Sb electrode delivers a reversible capacity of 960 mA h g –1 after 100 cycles, which is higher than those of CoS x @NC–Sb (809 mA h g –1 at 100th cycle) and CoS x @C (746 mA h g –1 at 100th cycle).…”

Section: Resultssupporting

confidence: 73%

Sb Nanoparticles Anchored on Nitrogen-Doped Amorphous Carbon-Coated Ultrathin CoS_x Nanosheets for Excellent Performance in Lithium-Ion Batteries

Jin

Jiang

Wang

et al. 2017

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Compared to single-component materials, hybrid materials with various components display superior electrochemical performance. In this work, two-dimensional CoS@NC@Sb nanosheets assembled by ultrathin CoS nanosheets (∼4 nm) and a thin layer of N-doped amorphous carbon (NC) combined with colloidlike Sb nanoparticles are designed and synthesized via a solvothermal route accompanied by a carbonization and Sb deposition procedure. If applied in lithium-ion batteries (LIBs), the hybrids exhibit a specific capacity of 960 mA h g at the 100th cycle at 0.1 A g. Moreover, the reversible capacity still maintains at 494 mA h g after 500 cycles at a high rate of 10 A g. All enhanced electrochemical properties of the hybrids are attributed to the synergistic effect of the two components and their unique structural features, which can effectively increase the electrical conductivity, shorten the pathway of Li diffusion, accommodate the volume variation, and inhibit the aggregation and pulverization of the electrode. We believe that the current work can provide a new strategy for designing and fabricating high-performance anode materials for LIBs.

show abstract

Section: Resultssupporting

confidence: 73%

Sb Nanoparticles Anchored on Nitrogen-Doped Amorphous Carbon-Coated Ultrathin CoS_x Nanosheets for Excellent Performance in Lithium-Ion Batteries

Jin

Jiang

Wang

et al. 2017

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

“…The chemical structure of the ternary Fe 2 O 3 /Fe 3 O 4 /FeCO 3 composite and single-component Fe 2 O 3 was also analyzed by FT-IR measurement, and the results are shown in Figure b. The broad adsorption band from 3000 to 3600 cm –1 is assigned to the stretching and bending vibrations of adsorbed water molecules; the two absorption bands at 481 and 565 cm –1 can be ascribed to the Fe–O vibration in α-Fe 2 O 3 ; the three absorption broads at 1392, 735, and 859 cm –1 can be attributed to the vibrations of the CO 3 2– anion in FeCO 3 . − The FT-IR results are in good agreement with the XRD analysis.…”

Section: Resultsmentioning

confidence: 99%

“…The peaks from Fe 2p, O 1s, and C 1s can be clearly detected in the wide-scan XPS spectrum (Figure c). The Fe 2p spectrum of the single-component Fe 2 O 3 (Figure d) shows two obvious peaks at 710.4 and 724.6 eV, which can be assigned to Fe 2p 3/2 and Fe 2p 1/2 , respectively; the two shake-up satellite peaks at 718.7 and 733.1 eV are characteristic of Fe 3+ ; , the Fe 2p spectrum of the ternary Fe 2 O 3 /Fe 3 O 4 /FeCO 3 composite (Figure d) shows two new peaks at 709.3 and 715.2 eV, which correspond to the Fe 2+ in FeCO 3 /Fe 3 O 4 and the satellite peak of Fe 2+ , respectively Figure e shows the C 1s spectra of the two samples.…”

Section: Resultsmentioning

confidence: 99%

Ternary Fe₂O₃/Fe₃O₄/FeCO₃ Composite as a High-Performance Anode Material for Lithium-Ion Batteries

Huang

et al. 2019

J. Phys. Chem. C

View full text Add to dashboard Cite

Fe-based oxides have been recognized as one of the most promising anode materials for lithium-ion batteries (LIBs) due to their theoretical capacities, low cost, eco-friendliness, and natural abundance. However, poor cycling stability and low rate capability severely hindered their practical applications. Compared to single-component materials, multicomponent composites are more capable of achieving optimal electrochemical performance for electrode materials due to their synergetic effect. In this work, a novel ternary Fe2O3/Fe3O4/FeCO3 composite is fabricated by a facile hydrothermal method with FeCl2·4H2O and urea as raw materials. When evaluated as an anode material for LIBs, this ternary Fe2O3/Fe3O4/FeCO3 composite exhibits excellent rate capability (with reversible capacities of 624, 488, and 270 mAh g–1 at 1.0, 3.0, and 10.0 A g–1, respectively) and remarkable cycling stability (with a reversible capacity of 779 mAh g–1 after 300 cycles at 0.5 A g–1 and 410 mAh g–1 after 800 cycles at 3.0 A g–1), which are much superior to those of the single-component Fe2O3 material. It is found that the ternary Fe2O3/Fe3O4/FeCO3 composite possesses good structural integrity during cycling and fast electrochemical reaction kinetics, which result in excellent long-term cycling stability and enhanced high-rate capability. The results may provide clues for the rational structural design of high-performance Fe-oxide anode materials for next-generation LIBs.

show abstract

“…8,9 However, researchers have been reported the preparation of nanocomposites and the effects of the polymerization on the structure and properties of PPy. 10–13…”

Section: Introductionmentioning

confidence: 99%

“…8,9 However, researchers have been reported the preparation of nanocomposites and the effects of the polymerization on the structure and properties of PPy. [10][11][12][13] Currently, many nanocomposites constituted of PPy and metal oxide particles have been prepared using different methodologies, resulting in many applications, such as absorption of dispersed micro-solid phases of antidepressant drugs from biological fluids, 14 removal of toxic substances in aqueous solutions, 15,16 corrosion protection, 17,18 sensors, [19][20][21] photocatalysts, 22 artificial muscles, 23 capacitors, 24,25 in situ reduction of bacterial activity, 26 batteries, 27,28 etc. Certain efforts have promoted new strategies to produce core-shell nanocomposites with some degree of controlled particle dimensions and shapes to tune their properties.…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole@α-Al₂O₃ and polypyrrole@CeO₂ core-shell hybrid nanocomposites

Silva

Souza

Sanches

2017

Journal of Composite Materials

View full text Add to dashboard Cite

PPy@α-Al2O3 and PPy@CeO2 nanocomposites were synthesized free of acids by in situ polymerization and characterized by X-ray diffraction, scanning electron microscopy, differential scanning calorimetry and DC electrical conductivity measurements. X-ray diffraction pattern of Polypyrrole revealed a semi crystalline structure. The Le Bail method was performed using the X-ray diffraction pattern of polypyrrole and allowed the proposition of the unit cell parameters (P21/c, a = 9.0173 Å, b = 7.1641 Å, c = 6.4184 Å, α = 90°, β = 117.7°, γ = 90°), which is composed by a dimeric molecule disposed along the [001] direction. A cauliflower-like morphology was observed in polypyrrole, which consists of incomplete spheres forming nanoparticle clusters. Core-shell morphology was verified in the nanocomposites consisting of a thin layer of polymer reinforcement disposed over the metal oxides matrices. Differential scanning calorimetry measurements allowed verifying the hydrophobic behavior of the inorganic phase, promoting the repulsion of the internal water molecules out from the polymer phase. Then the initial decomposition temperature of the nanocomposites has become smaller. The polypyrrole electrical conductivity is lower than the nanocomposites and may be related with the absence of hydration water in nanocomposites and also to the surface conductivity due to the thin polymer layer. PPy@α-Al2O3 and PPy@CeO2 nanocomposites presented DC electrical conductivity 80% higher when compared to the as-synthesized polypyrrole. Thus, the aim of this paper was to characterize structural and morphologically the pure polypyrrole as well as the PPy@α-Al2O3 and PPy@CeO2 nanocomposites and correlate these results with the DC electrical conductivity measurements.

show abstract

Polypyrrole layer coated MnOx/Fe2O3 nanotubes with enhanced electrochemical performance for lithium ion batteries

Cited by 29 publications

References 47 publications

Sb Nanoparticles Anchored on Nitrogen-Doped Amorphous Carbon-Coated Ultrathin CoS_x Nanosheets for Excellent Performance in Lithium-Ion Batteries

Sb Nanoparticles Anchored on Nitrogen-Doped Amorphous Carbon-Coated Ultrathin CoS_x Nanosheets for Excellent Performance in Lithium-Ion Batteries

Ternary Fe₂O₃/Fe₃O₄/FeCO₃ Composite as a High-Performance Anode Material for Lithium-Ion Batteries

Polypyrrole@α-Al₂O₃ and polypyrrole@CeO₂ core-shell hybrid nanocomposites

Contact Info

Product

Resources

About

Polypyrrole layer coated MnOx/Fe2O3 nanotubes with enhanced electrochemical performance for lithium ion batteries

Cited by 29 publications

References 47 publications

Sb Nanoparticles Anchored on Nitrogen-Doped Amorphous Carbon-Coated Ultrathin CoSx Nanosheets for Excellent Performance in Lithium-Ion Batteries

Sb Nanoparticles Anchored on Nitrogen-Doped Amorphous Carbon-Coated Ultrathin CoSx Nanosheets for Excellent Performance in Lithium-Ion Batteries

Ternary Fe2O3/Fe3O4/FeCO3 Composite as a High-Performance Anode Material for Lithium-Ion Batteries

Polypyrrole@α-Al2O3 and polypyrrole@CeO2 core-shell hybrid nanocomposites

Contact Info

Product

Resources

About

Sb Nanoparticles Anchored on Nitrogen-Doped Amorphous Carbon-Coated Ultrathin CoS_x Nanosheets for Excellent Performance in Lithium-Ion Batteries

Sb Nanoparticles Anchored on Nitrogen-Doped Amorphous Carbon-Coated Ultrathin CoS_x Nanosheets for Excellent Performance in Lithium-Ion Batteries

Ternary Fe₂O₃/Fe₃O₄/FeCO₃ Composite as a High-Performance Anode Material for Lithium-Ion Batteries

Polypyrrole@α-Al₂O₃ and polypyrrole@CeO₂ core-shell hybrid nanocomposites