Advanced Vanadium Redox Flow Battery

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Program:
GRIDS
Award:
$1,724,842
Location:
Littleton, Colorado
Status:
ALUMNI
Project Term:
10/01/2012 - 06/30/2015

Technology Description:

ITN Energy Systems is developing a vanadium redox flow battery for residential and small-scale commercial energy storage that would be more efficient and affordable than today’s best energy storage systems. In a redox flow battery, chemical reactions occur that allow the battery to absorb or deliver electricity. Unlike conventional batteries, flow batteries use a liquid (also known as an electrolyte) to store energy; the more electrolyte that is used, the longer the battery can operate. Vanadium electrolyte-based redox flow battery systems are a technology for today’s market, but they require expensive ion-exchange membranes. In the past, prices of vanadium have fluctuated, increasing the cost of the electrolyte and posing a major obstacle to more widespread adoption of vanadium redox flow batteries. ITN’s design combines a low-cost ion-exchange membrane and a low-cost electrolyte solution to reduce overall system cost, ultimately making a vanadium redox flow battery cost-competitive with more traditional lead-acid batteries.

Potential Impact:

If successful, ITN’s vanadium redox flow battery would provide storage capacity for residential and small-scale commercial applications at a cost approaching $1,000 per unit, compared to the $4,000+ price point of today’s systems.

Security:

A more efficient and reliable grid would be more resilient to potential disruptions.

Environment:

Electricity generation accounts for over 40% of U.S. carbon dioxide (CO2) emissions. Enabling large-scale contributions of wind and solar power for our electricity generation would result in a substantial decrease in CO2 emissions.

Economy:

Increases in the availability of wind and solar power would reduce fossil fuel demand, resulting in reduced fuel prices and more stable electricity rates.

Contact

ARPA-E Program Director:
Dr. Eric Rohlfing
Project Contact:
Dr. Paul Thoen
Press and General Inquiries Email:
ARPA-E-Comms@hq.doe.gov
Project Contact Email:
pthoen@itnes.com

Partners

University of Kentucky

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Release Date:
03/02/2010