Investigation of electronic and ionic transport properties in α-MoO3 cathode material by electrochemical impedance spectroscopy

Bao, Wenjing; Zhuang, Quanchao; Xu, Shoudong; Cui, Yongli; Shi, Yujun; Ye, Qiang

doi:10.1007/s11581-012-0823-8

Cited by 11 publications

(1 citation statement)

References 47 publications

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“…Meanwhile, the measured impedance data were analyzed using the ZSimpWin software, as listed in Table 1. The Warburg coefficient [27] σw is the slope for the function of Z' vs. ω…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Properties for Co-Doped Pyrite with High Conductivity

Liu

Wang

2015

Energies

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Abstract:In this paper, the hydrothermal method was adopted to synthesize nanostructure Co-doped pyrite (FeS2). The structural properties and morphology of the synthesized materials were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. Co in the crystal lattice of FeS2 could change the growth rate of different crystal planes of the crystal particles, which resulted in various polyhedrons with clear faces and sharp outlines. In addition, the electrochemical performance of the doping pyrite in Li/FeS2 batteries was evaluated using the galvanostatic discharge test, cyclic voltammetry and electrochemical impedance spectroscopy. The results showed that the discharge capacity of the doped material (801.8 mAh·g) with a doping ratio of 7% was significantly higher than that of the original FeS2 (574.6 mAh·g −1 ) because of the enhanced conductivity. Therefore, the doping method is potentially effective for improving the electrochemical performance of FeS2.

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“…Meanwhile, the measured impedance data were analyzed using the ZSimpWin software, as listed in Table 1. The Warburg coefficient [27] σw is the slope for the function of Z' vs. ω…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Properties for Co-Doped Pyrite with High Conductivity

Liu

Wang

2015

Energies

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Synthesis and Electronic/ionic Transport Properties of MoO₂/rGO Anode for Lithium Ion Batteries

Cui

Hao

et al. 2014

J Chinese Chemical Soc

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MoO 2 /rGO (reduced graphite oxide) composites have been synthesized by hydrothermal method followed by anneal and characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Galvanostatic charge/discharge testing and electrochemical impedance spectroscopy (EIS) techniques are employed to evaluate the kinetic behaviors of the MoO 2 /rGO during lithiation/delithiation. The obtained MoO 2 -based materials have monoclinic crystal structure, and worm-like shape with average dimensions of 100-200 nm width and 500 nm-1 mm length. There are two steps of lithium ion intercalation/de-intercalation for the MoO 2 /rGO anode at the potential ranging from 1.0 to 3.5 V, locating at E Li/Li + = 1.60/1.75 V, 1.25/1.40 V, and the first discharge and charge capacities are, respectively, 221.0 and 185.4 mAh g -1 . The resistances of R SEI and R CT for the MoO 2 /rGO anode are 2-4 W and below 5 W. Moreover, the lithium diffusion coefficient calculated from the EIS measurement is about 3.6×10 -9 cm 2 s -1 .

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Metal–organic framework derived porous nanostructured Co3O4 as high-performance anode materials for lithium-ion batteries

Lü

et al. 2020

J Mater Sci

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Investigation of electronic and ionic transport properties in α-MoO3 cathode material by electrochemical impedance spectroscopy

Cited by 11 publications

References 47 publications

Electrochemical Properties for Co-Doped Pyrite with High Conductivity

Electrochemical Properties for Co-Doped Pyrite with High Conductivity

Synthesis and Electronic/ionic Transport Properties of MoO₂/rGO Anode for Lithium Ion Batteries

Metal–organic framework derived porous nanostructured Co3O4 as high-performance anode materials for lithium-ion batteries

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Investigation of electronic and ionic transport properties in α-MoO3 cathode material by electrochemical impedance spectroscopy

Cited by 11 publications

References 47 publications

Electrochemical Properties for Co-Doped Pyrite with High Conductivity

Electrochemical Properties for Co-Doped Pyrite with High Conductivity

Synthesis and Electronic/ionic Transport Properties of MoO2/rGO Anode for Lithium Ion Batteries

Metal–organic framework derived porous nanostructured Co3O4 as high-performance anode materials for lithium-ion batteries

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Synthesis and Electronic/ionic Transport Properties of MoO₂/rGO Anode for Lithium Ion Batteries