Aqueous Zinc-Metal Battery

Summary

 

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

 

Applications

 

  • 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.

 

Status

 

patent pending; seeking partners

 

 

Patent Information:
Tech ID:
OSU-18-58
Contact:
David Dickson
IP & Licensing Manager
Oregon State University
541-737-3450
david.dickson@oregonstate.edu
Inventors:
Xiulei (david) Ji
Chong Zhang
Keywords:
Batteries
Energy Storage
Manufacturing
Zinc battery
© 2019. All Rights Reserved. Powered by Inteum