Issue 6, 2016

All-vanadium dual circuit redox flow battery for renewable hydrogen generation and desulfurisation

Abstract

An all-vanadium dual circuit redox flow battery is an electrochemical energy storage system able to function as a conventional battery, but also to produce hydrogen and perform desulfurization when a surplus of electricity is available by chemical discharge of the battery electrolytes. The hydrogen reactor chemically discharging the negative electrolyte has been designed and scaled up to kW scale, while different options to discharge the positive electrolyte have been evaluated, including oxidation of hydrazine, SO2 and H2S. The system is well suited to convert sulfur dioxide and hydrogen sulfide to harmless compounds while producing hydrogen, with overall system efficiencies from 50 to 70% for hydrogen production.

Graphical abstract: All-vanadium dual circuit redox flow battery for renewable hydrogen generation and desulfurisation

Supplementary files

Article information

Article type
Paper
Submitted
14 Sept. 2015
Accepted
09 Nov. 2015
First published
09 Nov. 2015

Green Chem., 2016,18, 1785-1797

Author version available

All-vanadium dual circuit redox flow battery for renewable hydrogen generation and desulfurisation

P. Peljo, H. Vrubel, V. Amstutz, J. Pandard, J. Morgado, A. Santasalo-Aarnio, D. Lloyd, F. Gumy, C. R. Dennison, K. E. Toghill and H. H. Girault, Green Chem., 2016, 18, 1785 DOI: 10.1039/C5GC02196K

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