Net-structured NiO–C nanocomposite as Li-intercalation electrode material

Huang, Xiaohong; Tu, Ji; Zhang, C.Q.; Xiang, Jiayuan

doi:10.1016/j.elecom.2007.01.014

Cited by 151 publications

(118 citation statements)

References 24 publications

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“…? 3e -), to transition metal oxides: [24]. Large polyanions instead of the smaller O 2-ions increase the molar weight and decrease the theoretical capacity accordingly; hence, b-LiVOPO 4 has lower initial charge/discharge capacities than transition metal oxide anode materials; however, the large polyanions build an open 3D framework which can help to stabilize the structure and may alleviate the change of the cell volume during the charge and discharge process; therefore, b-LiVOPO 4 showed better cyclic performance than transition metal oxide anode materials.…”

Section: Measurementsmentioning

confidence: 99%

LiVOPO4 as an anode material for lithium ion batteries

2009

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b-LiVOPO 4 was prepared via a sol-gel method and exploited as an anode material for lithium ion batteries. The b-LiVOPO 4 anode material showed a reversible capacity higher than 380 mAh g -1 during 30 cycles; the coulombic efficiency exceeded 94%. We speculated a conversion reaction mechanism for Li recycle, VPO 4 ? 3Li ? ? 3e -$ V ? Li 3 PO 4 . The higher discharge capacity and cyclic ability may be due to the large PO 4 3-ions that can alleviate the change of the cell volume during the charge/ discharge processes, and the formation of Li 2 O during the first discharge process that can buffer the volume change in the electrodes.

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Section: Measurementsmentioning

confidence: 99%

LiVOPO4 as an anode material for lithium ion batteries

2009

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“…This is because the high electronic conductivity of the PPy in the composite is beneficial for the diffusion of lithium ions. 24 No additional peak was found during the redox reactions for the NiO-PPy composite, indicating that the PPy did not contribute any capacity in the charge-discharge process and only acted as a conductive additive. 10 The discharge capacity versus the cycle number for cells with the NiO and NiO-PPy electrodes is presented in Fig.…”

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confidence: 97%

Effects of polypyrrole on the performance of nickel oxide anode materials for rechargeable lithium-ion batteries

et al. 2011

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Nickel oxide-polypyrrole (NiO-PPy) composites for lithium-ion batteries were prepared by a chemical polymerization method with sodium p-toluenesulfonate as the dopant, Triton-X as the surfactant, and FeCl 3 as the oxidant. The new composite material was characterized by Raman spectroscopy, thermogravimetric analysis, scanning electron microscopy, and field-emission scanning electron microscopy. Nanosize conducting PPy particles with a cauliflower-like morphology were uniformly coated onto the surface of the NiO powder. The electrochemical results were improved for the NiO-PPy composite compared with the pristine NiO. After 30 cycles, the capacities of the NiO and the NiO-PPy composite were about 119 and 436 mAhÁg À1 , respectively, indicating that the electrochemical performance of the composite was significantly improved.

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“…charge-transfer impedance on the electrode/electrolyte interface, respectively. The inclined line at an approximate 45°angle to the real axis corresponds to the lithium-diffusion processes within the electrode [17]. From Fig.…”

Section: Resultsmentioning

confidence: 99%

Nanocrystalline NiO hollow spheres in conjunction with CMC for lithium-ion batteries

et al. 2010

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Hollow spherical NiO particles were prepared using the spray pyrolysis method with different concentrations of precursor. The electrochemical properties of the NiO electrodes, which contained a new type of binder, carboxymethyl cellulose (CMC), were examined for comparison with NiO electrodes with polyvinylidene fluoride (PVDF) binder. The electrochemical performance of NiO electrodes using CMC binder was significantly improved. For the cell made from 0.3 mol L -1 precursor, the irreversible capacity loss between the first discharge and charge is about 43 and 24% for the electrode with PVDF and CMC binder, respectively. The cell with NiO-CMC electrode has a much higher discharge capacity of 547 mAh g -1 compared to that of the cell with NiO-PVDF electrode, which is 157 mAh g -1 beyond 40 cycles.

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Net-structured NiO–C nanocomposite as Li-intercalation electrode material

Cited by 151 publications

References 24 publications

LiVOPO4 as an anode material for lithium ion batteries

LiVOPO4 as an anode material for lithium ion batteries

Effects of polypyrrole on the performance of nickel oxide anode materials for rechargeable lithium-ion batteries

Nanocrystalline NiO hollow spheres in conjunction with CMC for lithium-ion batteries

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