Rheological phase synthesis and characterization of Li3V2(PO4)3/C composites as cathode materials for lithium ion batteries

Cao, Xiaoyu; Zhang, Jiejie

doi:10.1016/j.electacta.2014.02.095

Cited by 29 publications

(11 citation statements)

References 40 publications

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“…This demonstrates that the CeO 2 coating does not change the structure of the as-prepared LVP/C materials. However, carbon phase is not observed from the XRD pattern due to its amorphous structure [31].…”

Section: Sample Characterizationsmentioning

confidence: 99%

Synthesis and low temperature electrochemical properties of CeO2 and C co-modified Li3V2(PO4)3 cathode materials for lithium-ion batteries

Cai

Yang

Guo

et al. 2015

Electrochimica Acta

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Section: Sample Characterizationsmentioning

confidence: 99%

Synthesis and low temperature electrochemical properties of CeO2 and C co-modified Li3V2(PO4)3 cathode materials for lithium-ion batteries

Cai

Yang

Guo

et al. 2015

Electrochimica Acta

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“…Compared with the uncharged LVPBC-0.14 composite, the main LVP diffraction peaks of the LVPBC-0.14 composite at the fully discharged states have emerged, in addition to the diffraction peaks of aluminum mesh. It is only the intensity of the diffraction peaks which change, in comparison with the reported ex-situ XRD result of the LVPC composite operated in the voltage range of 3.0–4.3 V [39]. Obviously, the structural reversibility of LVP in the voltage range of 3.0–4.8 V is slightly poorer than that of LVP in the voltage range of 3.0–4.3 V, because the former involves three Li + ion intercalations/deintercalations.…”

Section: Resultsmentioning

confidence: 83%

“…However, the Bragg diffraction peaks of the LVPBC composites become sharper, indicting the good crystallinity for the as-synthesized LVPBC composites. No impurity peaks are detected in the XRD patterns, which indicates that a small amount of Br − -doping does not change the basic crystal structure [39]. But then, the main diffraction peak intensities of the LVPBC composites are heightened.…”

Section: Resultsmentioning

confidence: 99%

“…The LVPBC composite cathode materials were prepared by the rheological phase reaction method, in a similar manner to those reported in previous references [38,39,40]. All of the chemicals used in this work were of an analytical grade, without any pre-treatment.…”

Section: Methodsmentioning

confidence: 99%

“…In order to investigate the effect of Br − doping, the pristine LVPC composite was also synthesized under the same conditions, but without the addition of LiBr powder. According to our previous study [39,41], the carbon content in a LVPC composite is around 15 wt %.…”

Section: Methodsmentioning

confidence: 99%

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Preparation and Electrochemical Properties of Li3V2(PO4)3−xBrx/Carbon Composites as Cathode Materials for Lithium-Ion Batteries

Cao

Zhu

et al. 2017

Nanomaterials

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Li3V2(PO4)3−xBrx/carbon (x = 0.08, 0.14, 0.20, and 0.26) composites as cathode materials for lithium-ion batteries were prepared through partially substituting PO43− with Br−, via a rheological phase reaction method. The crystal structure and morphology of the as-prepared composites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and electrochemical properties were evaluated by charge/discharge cycling and electrochemical impedance spectroscopy (EIS). XRD results reveal that the Li3V2(PO4)3−xBrx/carbon composites with solid solution phase are well crystallized and have the same monoclinic structure as the pristine Li3V2(PO4)3/carbon composite. It is indicated by SEM images that the Li3V2(PO4)3−xBrx/carbon composites possess large and irregular particles, with an increasing Br− content. Among the Li3V2(PO4)3−xBrx/carbon composites, the Li3V2(PO4)2.86Br0.14/carbon composite shows the highest initial discharge capacity of 178.33 mAh·g−1 at the current rate of 30 mA·g−1 in the voltage range of 4.8–3.0 V, and the discharge capacity of 139.66 mAh·g−1 remains after 100 charge/discharge cycles. Even if operated at the current rate of 90 mA·g−1, Li3V2(PO4)2.86Br0.14/carbon composite still releases the initial discharge capacity of 156.57 mAh·g−1, and the discharge capacity of 123.3 mAh·g−1 can be maintained after the same number of cycles, which is beyond the discharge capacity and cycleability of the pristine Li3V2(PO4)3/carbon composite. EIS results imply that the Li3V2(PO4)2.86Br0.14/carbon composite demonstrates a decreased charge transfer resistance and preserves a good interfacial compatibility between solid electrode and electrolyte solution, compared with the pristine Li3V2(PO4)3/carbon composite upon cycling.

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Electrochemical performance of novel Li3V2(PO4)3 glass-ceramic nanocomposites as electrodes for energy storage devices

El‐Desoky

Al-Syadi

Al-Assiri

et al. 2016

J Solid State Electrochem

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Rheological phase synthesis and characterization of Li3V2(PO4)3/C composites as cathode materials for lithium ion batteries

Cited by 29 publications

References 40 publications

Synthesis and low temperature electrochemical properties of CeO2 and C co-modified Li3V2(PO4)3 cathode materials for lithium-ion batteries

Synthesis and low temperature electrochemical properties of CeO2 and C co-modified Li3V2(PO4)3 cathode materials for lithium-ion batteries

Preparation and Electrochemical Properties of Li3V2(PO4)3−xBrx/Carbon Composites as Cathode Materials for Lithium-Ion Batteries

Electrochemical performance of novel Li3V2(PO4)3 glass-ceramic nanocomposites as electrodes for energy storage devices

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