Methods for Synthesizing Vanadium Oxide Nanobelts and Applications as Cathode Materials for Batteries


Reference #: 01420

The University of South Carolina is offering licensing opportunities for a V3O8-layered structure as a cathode for zinc-ion batteries.


Battery-based energy storage technologies are critically important to existing grid stability and the increased use of renewable energy in the grid. The current state-of-the-art organic-based lithium-ion battery cannot be used for such large-scale application due to safety and cost concerns. Aqueous batteries have intrinsic safety, low cost and long life, and zinc-ion chemistry stands out to be the front runner. However, the performance of a zinc-ion aqueous battery is limited by the rate of Zinc-ion storage kinetics in its cathode. 

Invention Description:

A new dual-cation pre-inserted and hydrated V3O8-layered structure which exhibits excellent cycle life and rate capacity. This invention is an ultra-stable Zn-ion battery cathode. Through a combined theoretical and experimental approach, it was discovered that the unique structure in this cathode is energetically favorable for Zn2+diffusion and that the structural water situated between V3O8layers promotes a fast charge-transfer and bulk migration of Zn2+by enlarging gallery spacing and providing more Zn-ion storage sites. 

Potential Applications:

The new cathode solves the long-standing cathode issue associated with Zinc-ion batteries in cycle life and rate capacity.

Advantages and Benefits:

Rechargeable aqueous batteries with Zn2+as a working-ion are promising candidates for grid-scale energy storage because of their intrinsic safety, low-cost, and high energy-intensity. However, the practical application of Zn-ion batteries is still facing great challenges in identifying suitable cathode materials with excellent Zn2+-storage cyclability. This invention solves this long-standing cathode issue. 

Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date Patent Status
Methods for Synthesizing Vanadium Oxide Nanobelts and Applications as Cathode Materials for Batteries Utility United States 16/894,249 11,553,180 6/5/2020 12/6/2022   Filed
For Information, Contact:
Technology Commercialization
University of South Carolina
Kevin Huang
Kaiyue Zhu
high rate capacity
long cycle life
low cost
Zinc-ion batteries
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