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Title: Iron-sulfide redox flow batteries

Iron-sulfide redox flow battery (RFB) systems can be advantageous for energy storage, particularly when the electrolytes have pH values greater than 6. Such systems can exhibit excellent energy conversion efficiency and stability and can utilize low-cost materials that are relatively safer and more environmentally friendly. One example of an iron-sulfide RFB is characterized by a positive electrolyte that comprises Fe(III) and/or Fe(II) in a positive electrolyte supporting solution, a negative electrolyte that comprises S.sup.2- and/or S in a negative electrolyte supporting solution, and a membrane, or a separator, that separates the positive electrolyte and electrode from the negative electrolyte and electrode.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
1257193
Assignee:
Battelle Memorial Institute (Richland, WA) PNNL
Patent Number(s):
9,368,824
Application Number:
14/079,135
Contract Number:
AC05-76RL01830
Resource Relation:
Patent File Date: 2013 Nov 13
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE

Works referenced in this record:

A comparative study of carbon felt and activated carbon based electrodes for sodium polysulfide/bromine redox flow battery
journal, September 2006