Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.

A 1.51 V pH Neutral Redox Flow Battery towards Scalable Energy Storage


Aqueous redox flow batteries using low-cost organic and inorganic active materials have received growing interest for sustainable energy storage. In this study, low-cost, high redox potential (1.08 V vs NHE) and high capacity ammonium bromide (NH4Br, 214.4 Ah/L) catholyte was coupled with the organic viologen anolyte to demonstrate 1.51 V high voltage (SPr)2V/Brˉ aqueous redox flow batteries under pH neutral conditions for the first time. Benefitted from the high water solubility of both NH4Br catholyte and (SPr)2V anolyte, the newly designed (SPr)2V/Brˉ organic flow battery was operated at up to 1.5 M and an energy density of up to 30.4 Wh/L. Using multiwall carbon nanotubes as electrochemical additive for Br3ˉ/Brˉ redox couple, the highly energy dense (SPr)2V/Brˉ flow battery manifested outstanding current performance, up to 78% energy efficiencies at 40 mA/cm2 current density, and 227 mW/cm2 power density, the highest power density known for pH neutral organic flow batteries.

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Feb 2019, accepted on 12 Mar 2019 and first published on 13 Mar 2019

Article type: Paper
DOI: 10.1039/C9TA01469A
Citation: J. Mater. Chem. A, 2019, Accepted Manuscript

  •   Request permissions

    A 1.51 V pH Neutral Redox Flow Battery towards Scalable Energy Storage

    J. Luo, W. Wu, C. R. DeBruler, B. Hu, M. Hu and T. Liu, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C9TA01469A

Search articles by author