Demonstration of 2.5kW/10kWh Vanadium Redox Flow Battery (VRFB) through rationally designed high energy density electrolytes and Membrane-Electrode Assembly (MEA)

Period of Performance: 01/01/2012 - 12/31/2012

$1.5MM

Phase 2 SBIR

Recipient Firm

ITN Energy Systems, Inc.
8130 Shaffer Parkway Array
Littleton, CO 80127
Principal Investigator
Firm POC

Abstract

ITN Energy Systems, Inc. (ITN) is proposing demonstration and deployment of 2.5kW/10kWh Vanadium Redox Flow Battery (VRFB) technology through a multi-faceted effort based on 1) Novel V-electrolytes based on Fluorinated Carboxylates, 2) Low-cost (and superior) proton exchange membrane and 3) “zero-gap” membrane-electrode assembly. The Fluorinated V-carboxylates are a new class of V-salts with the potential for high energy density V-electrolytes. The low-cost membrane technology, based on the renewable biopolymer chitosan and ITN’s proprietary cross-linking process has already demonstrated superior properties (higher proton conduction & lower V-permeability) than Nafion®. This membrane is an ideal low-cost alternative for Nafion® in VRFB applications. Such a synergistic approach has the highest potential to demonstrate an economically viable VRBF technology and address the ever-increasing demand for electrical energy storage, especially from renewable sources.