Jump to main content
Jump to site search

Issue 7, 2018
Previous Article Next Article

A strategically managed rechargeable battery system with a neutral methyl viologen anolyte and an acidic air-cathode enabled by a mediator-ion solid electrolyte

Author affiliations

Abstract

Redox flow batteries with organic electrode materials are attracting much attention. Previous research efforts have been focusing on liquid-phase electrodes on both the anode and cathode sides. Since batteries based on air cathodes can provide immense advantages, coupling a liquid organic electrode with a gaseous air cathode could offer multiple benefits in terms of cost, safety, and energy density. Herein we present a liquid–gaseous battery system with an aqueous methyl viologen (MV) anode and an air cathode. However, under the traditional battery operation principle with the same electrolyte at the anode and cathode, the resulting MV–air battery will not be able to provide a reasonable voltage for practical applications. In this study, the cell voltage of the MV–air chemistry is strategically manipulated by using an acidic cathode electrolyte (catholyte) and a neutral anode electrolyte (anolyte). To operate a battery with different electrolytes at the anode and cathode, a sodium-ion (Na+-ion) conductive solid-state electrolyte (Na-SSE) membrane is employed to physically and electrically separate the two electrodes. The shuttling of sodium ions via the Na-SSE balances the ionic charge transfer between the two electrodes and sustains the redox reactions at the air cathode and the MV anode.

Graphical abstract: A strategically managed rechargeable battery system with a neutral methyl viologen anolyte and an acidic air-cathode enabled by a mediator-ion solid electrolyte

Back to tab navigation

Supplementary files

Article information


Submitted
17 May 2018
Accepted
29 May 2018
First published
30 May 2018

Sustainable Energy Fuels, 2018,2, 1452-1457
Article type
Communication
Author version available

A strategically managed rechargeable battery system with a neutral methyl viologen anolyte and an acidic air-cathode enabled by a mediator-ion solid electrolyte

X. Yu and A. Manthiram, Sustainable Energy Fuels, 2018, 2, 1452
DOI: 10.1039/C8SE00227D

Social activity

Search articles by author

Spotlight

Advertisements