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Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells
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Solution-Processed All-V2 O5 Battery.

Guolong Wang1, Xiaoqian Cui1, Jiamei Liu2

  • 1State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an, Shaanxi, 710049, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|August 15, 2020
PubMed
Summary

Researchers developed a novel all-vanadium pentoxide (V2 O5) rechargeable battery using V2 O5 for both electrodes. This symmetrical battery design offers simplified fabrication and scalable production for advanced energy storage systems.

Keywords:
V2O5 nanobelt-graphene inkcharge storage kineticsenergy storagesolution-processingsymmetric-structured batteries

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Advancing energy storage systems relies on developing new battery technologies.
  • Symmetrical rechargeable batteries, utilizing identical electrode materials, represent a significant area of exploration.
  • Vanadium pentoxide (V2 O5) is a promising material for electrochemical applications.

Purpose of the Study:

  • To present a solution-processed, all-vanadium pentoxide (V2 O5) rechargeable battery with a symmetrical structure.
  • To demonstrate the decoupling of anionic and cationic redox reactions in a V2 O5 symmetrical battery by controlling potential windows.
  • To evaluate the electrochemical performance, rate capability, and cycling stability of this novel battery design.

Main Methods:

  • Fabrication of a symmetrical rechargeable battery using V2 O5 as both anode and cathode materials.
  • Employing a solution-processed strategy for electrode preparation.
  • Precisely controlling the working potential windows to decouple anionic and cationic redox reactions.

Main Results:

  • The all-V2 O5 symmetrical battery achieved a high capacity of 151 mAh g-1 at 0.10 C.
  • Demonstrated good rate performance with 70% capacity retention from 0.10 C to 5 C.
  • Exhibited promising cycling stability, retaining over 83% capacity after 900 cycles at 1 C.

Conclusions:

  • The developed symmetrical V2 O5 battery offers a new paradigm for advanced energy storage devices.
  • The solution-processed, symmetrical configuration simplifies fabrication and is highly profitable for scalable production.
  • This approach provides a viable pathway for constructing high-performance, cost-effective energy storage solutions.