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Membrane-less hybrid flow battery based on low-cost elements
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Leung, P. K., Martin, T., Shah, Akeel A., Mohamed, M. R., Anderson, M. A. and Palma, J. (2017) Membrane-less hybrid flow battery based on low-cost elements. Journal of Power Sources, 341 . 36 - 45. doi:10.1016/j.jpowsour.2016.11.062 ISSN 0378-7753.
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Official URL: http://dx.doi.org/10.1016/j.jpowsour.2016.11.062
Abstract
The capital cost of conventional redox flow batteries is relatively high (>USD$ 200/kWh) due to the use of expensive active materials and ion-exchange membranes. This paper presents a membrane-less hybrid organic-inorganic flow battery based on the low-cost elements zinc (<USD$ 3 Kg−1) and para-benzoquinone (<USD$ 8 Kg−1). Redox potential and voltammetric studies show that the open-circuit voltage of the battery is 1.17–1.59 V over a wide range of pH. Half-cell charge-discharge and dissolution experiments indicate that the negative electrode reaction is limiting due to the presence of chemical side reactions on the electrode surface. The positive electrode redox reactions are not affected and exhibit (half-cell) coulombic efficiencies of >92.7% with the use of carbon felt electrodes. In the presence of a fully oxidized active species close to its solubility limit, dissolution of the deposited anode is relatively slow (<2.37 g h−1 cm−2) with an equivalent corrosion current density of <1.9 mA cm−2. In a parallel plate flow configuration, the resulting battery was charge-discharge cycled at 30 mA cm−2 with average coulombic and energy efficiencies of c.a. 71.8 and c.a. 42.0% over 20 cycles, respectively.
Item Type: | Journal Article | ||||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||
Library of Congress Subject Headings (LCSH): | Flow batteries , Energy storage -- Cost effectiveness | ||||||||||
Journal or Publication Title: | Journal of Power Sources | ||||||||||
Publisher: | Elsevier S.A. | ||||||||||
ISSN: | 0378-7753 | ||||||||||
Official Date: | 15 February 2017 | ||||||||||
Dates: |
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Volume: | 341 | ||||||||||
Page Range: | 36 - 45 | ||||||||||
DOI: | 10.1016/j.jpowsour.2016.11.062 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Date of first compliant deposit: | 7 February 2017 | ||||||||||
Date of first compliant Open Access: | 7 February 2017 |
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