Investigation on the electrode process of the Mn(II)/Mn(III) couple in redox flow battery

Xue, Fei; Wang, Yongliang; Wang, Wenhong; Wang, Xindong

doi:10.1016/j.electacta.2008.04.040

Cited by 116 publications

(70 citation statements)

References 16 publications

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“…and electrochemical performances [13,14]. Few studies have specifically addressed RFBs [15][16][17]. Studies that examined RFBs used an equivalent circuit composed of two resistance and constant phase element of capacitance in their analysis [15].…”

Section: +2mentioning

confidence: 99%

Porous Electrodes with Lower Impedance for Vanadium Redox Flow Batteries

Park¹,

Kim²

2015

Korean Chemical Engineering Research

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− Vanadium redox flow batteries (VRFBs) have been investigated for their potential utility as large energy storage systems due to their advantageous performances in terms of long cycle life, high energy efficiency, low cost, and flexible design. Carbon materials are typically used as electrodes in redox reactions and as a liquid electrolyte support. The activities, surface areas, and surface morphologies of porous carbon materials must be optimized to increase the redox flow battery performance. Here, to reduce the resistance in VRFBs, surface-modified carbon felt electrodes were fabricated, and their structural, morphological, and chemical properties were characterized. The surface-modified carbon felt electrode improved the cycling energy efficiencies in the VRFBs, from 65% to 73%, due to the improved wettability with electrolyte. From the results of impedances analysis with proposed fitting model, the electrolyte-coupled polarization in VRFB dramatically decreased upon modification of carbon felt electrode surface. It is also demonstrated that the compressibility of carbon felt electrodes was important to the VRFB polarization, which are concerned with mass transfer polarization. The impedance analysis will be helpful for obtaining better and longer-lived VRFB performances.

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Section: +2mentioning

confidence: 99%

Porous Electrodes with Lower Impedance for Vanadium Redox Flow Batteries

Park¹,

Kim²

2015

Korean Chemical Engineering Research

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“…At the anode, the formation of MnO 2 does not take place in a single step; rather, Mn 3+ as an intermediate species is first formed [24,26,[30][31][32] together with some solid intermediates such as MnOOH(s) and Mn 2 O 3 (s). Being unstable in acidic solution, [2] During the electrodeposition process, Mn 3+ ions may be trapped in the MnO 2 lattice, possibly resulting in defects in the crystal structure.…”

mentioning

confidence: 99%

Effect of Non-ionic Surfactants and Its Role in K Intercalation in Electrolytic Manganese Dioxide

Biswal

Tripathy

Subbaiah

et al. 2014

Metallurgical and Materials Transactions E

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The effect of non-ionic surface active agents (surfactants) Triton X-100 (TX-100) and and their role in potassium intercalation in electrolytic manganese dioxide (EMD) produced from manganese cake has been investigated. Electrosynthesis of MnO 2 in the absence or presence of surfactant was carried out from acidic MnSO 4 solution obtained from manganese cake under optimized conditions. A range of characterization techniques, including field emission scanning electron microscopy, transmission electron microscopy (TEM), Rutherford back scattering (RBS), and BET surface area/porosity studies, was carried out to determine the structural and chemical characteristics of the EMD. Galvanostatic (discharge) and potentiostatic (cyclic voltammetric) studies were employed to evaluate the suitability of EMD in combination with KOH electrolyte for alkaline battery applications. The presence of surfactant played an important role in modifying the physicochemical properties of the EMD by increasing the surface area of the material and hence, enhancing its electrochemical performance. The TEM and RBS analyses of the discharged EMD (c-MnO 2 ) material showed clear evidence of potassium intercalation or at least the formation of a film on the MnO 2 surface. The extent of intercalation was greater for EMD deposited in the presence of TX-100. Discharged MnO 2 showed products of Mn 2+ intermediates such as MnOOH and Mn 3 O 4 .

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“…Much of the early research on the redox flow batteries (RFBs) was carried out in the 1970s by Thaller and co-workers at the National Aeronautics and Space Administration (NASA) [1], the Energy Development Associates (EDA) [2], as well as several Japanese research institutions [3] on systems which included the Fe/Cr, Fe/Ti [4,5] and Ru(bpy) 3 /(BF 4 ) 2 [6] couples. Skyllas-Kazacos et al [7,8] worked on the all-vanadium RFB system during the 1980's and its success also led to the development of the vanadium-cerium [9], the vanadium-polyhalide [10,11], the vanadiummagnesium [12] and the vanadium-acetylacetonate [13] systems as these could provide higher cell potentials and energy densities. Since then, a variety of new RFB's have been developed, such as the soluble lead-acid [14,15], the cadmium-chloranil [16] and the bromine-polysulfide [17].…”

Section: Introductionmentioning

confidence: 99%

Factors affecting the performance of the Zn-Ce redox flow battery

Nikiforidis

Cartwright

Hodgson

et al. 2014

Electrochimica Acta

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This version is available at https://strathprints.strath.ac.uk/50808/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe Hull Cell was used to investigate the impact of current density j on the morphology and uniformity of zinc electrodeposited from a 2.5 mol dm −3 Zn 2+ solution in 1.5 mol dmmethanesulfonic acid at 40°C onto carbon-composite surfaces. The range of the applied deposition current density used was between 1 mA cm −2 and 100 mA cm −2 . Good, robust deposits were obtained when j ≥ 10 mA cm _2 whereas at j's lower than this, patchy films formed due to the competing hydrogen evolution reaction (HER) on the bare carboncomposite surface. An understanding of these effects and its application in the redox flow battery enabled both the coulombic and cell potential efficiencies to be maintained at relatively high values, 90% and 69% respectively, indicating a successful inhibition of the HER on the fully formed Zn layer. Flow velocity at the low Reynolds number in the cell (Re <200) had little impact on the electrochemical cell performance. Depletion of the cerium species became an issue for long charge times.

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Investigation on the electrode process of the Mn(II)/Mn(III) couple in redox flow battery

Cited by 116 publications

References 16 publications

Porous Electrodes with Lower Impedance for Vanadium Redox Flow Batteries

Porous Electrodes with Lower Impedance for Vanadium Redox Flow Batteries

Effect of Non-ionic Surfactants and Its Role in K Intercalation in Electrolytic Manganese Dioxide

Factors affecting the performance of the Zn-Ce redox flow battery

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