The high electrochemical performance of Li 3 V 2 (PO 4 ) 3 supported by graphene and carbon-nanofibers for advanced Li-ion batteries

Graphite and citric acid are simultaneously employed as carbon sources to prepare Li 3 V 2 (PO 4 ) 3 /C (LVP/C) cathode material by a sol-gel method. The effects of graphite on the structure and electrochemical performance of LVP/C are investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) method, and electrochemical measurements. The XRD patterns indicate that graphite influences the rate and the direction of the LVP crystal growth. The SEM results show that the sample has a unique porous wafer-like morphology. The sample has initial discharge capacities of 128.7 and 124 mAh g À1 at 0.2 and 5 C rates in the potential range of 3.0-4.3 V, respectively. The capacity retentions are 99.8% and 93.3% after 100 circles. In addition, a simple method for the determination of carbon content of LVP/C sample is put forward.

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Nanostructured Li₃V₂(PO₄)₃ Cathodes

Tan

Geng

et al. 2018

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To further increase the energy and power densities of lithium-ion batteries (LIBs), monoclinic Li V (PO ) attracts much attention. However, the intrinsic low electrical conductivity (2.4 × 10 S cm ) and sluggish kinetics become major drawbacks that keep Li V (PO ) away from meeting its full potential in high rate performance. Recently, significant breakthroughs in electrochemical performance (e.g., rate capability and cycling stability) have been achieved by utilizing advanced nanotechnologies. The nanostructured Li V (PO ) hybrid cathodes not only improve the electrical conductivity, but also provide high electrode/electrolyte contact interfaces, favorable electron and Li transport properties, and good accommodation of strain upon Li insertion/extraction. In this Review, light is shed on recent developments in the application of 0D (nanoparticles), 1D (nanowires and nanobelts), 2D (nanoplates and nanosheets), and 3D (nanospheres) Li V (PO ) for high-performance LIBs, especially highlighting their synthetic strategies and promising electrochemical properties. Finally, the future prospects of nanostructured Li V (PO ) cathodes are discussed.

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The high electrochemical performance of Li 3 V 2 (PO 4 ) 3 supported by graphene and carbon-nanofibers for advanced Li-ion batteries

Cited by 15 publications

References 56 publications

Graphene in Lithium-ion Batteries

Graphene in Lithium-ion Batteries

The Application of Graphite in the Preparation of Cathode Material Li₃V₂(PO₄)₃/C

Nanostructured Li₃V₂(PO₄)₃ Cathodes

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The high electrochemical performance of Li 3 V 2 (PO 4 ) 3 supported by graphene and carbon-nanofibers for advanced Li-ion batteries

Cited by 15 publications

References 56 publications

Graphene in Lithium-ion Batteries

Graphene in Lithium-ion Batteries

The Application of Graphite in the Preparation of Cathode Material Li3V2(PO4)3/C

Nanostructured Li3V2(PO4)3 Cathodes

Contact Info

Product

Resources

About

The Application of Graphite in the Preparation of Cathode Material Li₃V₂(PO₄)₃/C

Nanostructured Li₃V₂(PO₄)₃ Cathodes