Aqueous Metal Sulfur Battery

Summary

Technology Description

 

This technology provides a combination of various metal sulfur chemistries utilizing dissolution/precipitation and conversion reactions. The anode can be made of a variety of transition metals while the cathode side uses elemental sulfur, an abundant and low cost material. The design also inhibits the problematic dissolution of polysulfides. A number of metal-sulfur combinations have been tested with a number of aqueous electrolyte formulations, illustrating promising results for for a number of battery chemistries.

 

Features & Benefits

 

  • High storage and discharge capacity
  • Made of abundant, inexpensive, and benign materials
  • Stability over high cycle numbers

 

Applications

 

  • Grid-scale energy storage
  • Stationary back-up power

 

Background of Invention

 

The integration of the clean but intermittent energy sources (solar, wind) into the electric grids calls for the development of a cost-effective, safe, sustainable and durable battery technology. Unlike portable electronics where energy density is the most important metric, for grid-level storage it is the levelized cost of energy over an extended number of cycles coupled with considerations for safety and material costs that determine the affordability and feasibility of grid scale battery storage. Most current battery technologies rely on “rocking-chair” reactions that do not present an optimal design that is sustainable, durable, and inexpensive. This technology utilizes dissolution/precipitation and conversion reactions to achieve a much higher capacity and energy density, with abundant and inexpensive materials.

 

Status

 

Patent pending

 

Patent Information:
Tech ID:
OSU-18-32
Contact:
David Dickson
IP & Licensing Manager
Oregon State University
541-737-3450
david.dickson@oregonstate.edu
Inventors:
Xiulei (david) Ji
Xianyong Wu
Chong Zhang
Keywords:
Aqueous electrolyte
Batteries
Energy Storage
Materials Science
Metal sulfur
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