Aqueous Zinc-Metal Battery

Case ID:
Web Published:


Technology Description


This battery cell design utilizes a set of electrolytes based on aqueous zinc salt electrolytes and various mixtures comprising other ions. These electrolytes provide for the reversible stripping/plating of a zinc metal anode and the electrochemical energy storage devices that use these anodes. The overall cell architecture achieves a very high CE (>99%), maintained over a thousand cycles, very good self-discharge performance, and high energy storage to mass ratio.


Features & Benefits


  • High efficiency
  • Inexpensive
  • Safe




  • Grid-level storage
  • Load leveling
  • Military and marine applications


Background of Invention


Nonflammable aqueous electrolytes are safer than flammable organic electrolytes. Among aqueous batteries, zinc-metal batteries have attracted great attention due to zinc’s water compatibility and stability, high specific capacity (820 mAh g−1), low cost, and industrial mass production of Zn metal. The low Coulombic efficiency (CE) of Zn plating/stripping is the primary challenge that hinders the applications of aqueous Zn metal batteries. The low CE for Zn plating/stripping requires an excess of Zn metal used as anode, resulting in low energy density of full battery cells. This battery chemistry and architecture provides a solution to achieve high CE in zinc-metal batteries.




patent pending; seeking partners



Patent Information:
For Information, Contact:
David Dickson
IP & Licensing Manager
Oregon State University
Xiulei (david) Ji
Chong 崇 Zhang 张
Energy Storage
Zinc battery
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