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Batteries
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Material Design and Development for Redox Flow Batteries II
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Material Design and Development for Redox Flow Batteries II

A special issue of Batteries (ISSN 2313-0105).

Deadline for manuscript submissions: closed (27 January 2022) | Viewed by 8691

Special Issue Editor

Dr. Süleyman Er

E-Mail Website
Guest Editor
DIFFER-Dutch Institute for Fundamental Energy Research, De Zaale 20, 5612 AJ Eindhoven, The Netherlands
Interests: computational chemistry; machine learning; energy materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Renewable resources, such as wind and solar, are becoming competitive technologies with a steady increase in production volume and decrease in energy generation costs. The problems associated with the intermittency and the fluctuating nature of renewables increasingly threaten the stability of the electricity grid. Redox flow batteries (RFBs), which are essentially rechargeable batteries with electroactive chemicals dissolved in solutions, offer a way to store excess energy at varying scales. A serious current challenge is the discovery and development of key material components for the advancement of RFB technologies. In this Special Issue of Batteries, we invite both fundamental and applied research articles and reviews addressing issues related to the development or application of RFB active materials, electrodes, electrolytes, catalysts, membranes, modeling and characterization techniques.

Dr. Süleyman Er
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Batteries is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • redox flow batteries
  • organic materials
  • inorganic materials
  • hybrid materials
  • electrodes
  • electrolytes
  • catalysts
  • membranes
  • characterization
  • modeling
  • applications

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Published Papers (2 papers)

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Research

15 pages, 3401 KiB  
Article
Carbon Monoliths with Hierarchical Porous Structure for All-Vanadium Redox Flow Batteries
by Jose Francisco Vivo-Vilches, Blagoj Karakashov, Alain Celzard, Vanessa Fierro, Ranine El Hage, Nicolas Brosse, Anthony Dufour and Mathieu Etienne
Batteries 2021, 7(3), 55; https://doi.org/10.3390/batteries7030055 - 10 Aug 2021
Cited by 8 | Viewed by 3880
Abstract
Carbon monoliths were tested as electrodes for vanadium redox batteries. The materials were synthesised by a hard-templating route, employing sucrose as carbon precursor and sodium chloride crystals as the hard template. For the preparation process, both sucrose and sodium chloride were ball-milled together [...] Read more.
Carbon monoliths were tested as electrodes for vanadium redox batteries. The materials were synthesised by a hard-templating route, employing sucrose as carbon precursor and sodium chloride crystals as the hard template. For the preparation process, both sucrose and sodium chloride were ball-milled together and molten into a paste which was hot-pressed to achieve polycondensation of sucrose into a hard monolith. The resultant material was pyrolysed in nitrogen at 750 °C, and then washed to remove the salt by dissolving it in water. Once the porosity was opened, a second pyrolysis step at 900 °C was performed for the complete conversion of the materials into carbon. The products were next characterised in terms of textural properties and composition. Changes in porosity, obtained by varying the proportions of sucrose to sodium chloride in the initial mixture, were correlated with the electrochemical performances of the samples, and a good agreement between capacitive response and microporosity was indeed observed highlighted by an increase in the cyclic voltammetry curve area when the SBET increased. In contrast, the reversibility of vanadium redox reactions measured as a function of the difference between reduction and oxidation potentials was correlated with the accessibility of the active vanadium species to the carbon surface, i.e., was correlated with the macroporosity. The latter was a critical parameter for understanding the differences of energy and voltage efficiencies among the materials, those with larger macropore volumes having the higher efficiencies. Full article
(This article belongs to the Special Issue Material Design and Development for Redox Flow Batteries II)
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17 pages, 2926 KiB  
Article
The Effect of Input Parameter Variation on the Accuracy of a Vanadium Redox Flow Battery Simulation Model
by Christina Zugschwert, Jan Dundálek, Stephan Leyer, Jean-Régis Hadji-Minaglou, Juraj Kosek and Karl-Heinz Pettinger
Batteries 2021, 7(1), 7; https://doi.org/10.3390/batteries7010007 - 19 Jan 2021
Cited by 7 | Viewed by 3855
Abstract
Accurately predicting battery behavior, while using low input data, is highly desirable in embedded simulation architectures like grid or integrated energy system analysis. Currently, the available vanadium redox flow battery (VRFB) models achieve highly accurate predictions of electrochemical behavior or control algorithms, while [...] Read more.
Accurately predicting battery behavior, while using low input data, is highly desirable in embedded simulation architectures like grid or integrated energy system analysis. Currently, the available vanadium redox flow battery (VRFB) models achieve highly accurate predictions of electrochemical behavior or control algorithms, while the optimization of the required input data scope is neglected. In this study, a parametrization tool for a DC grey box simulation model is developed using measurements with a 10 kW/100 kWh VRFB. An objective function is applied to optimize the required input data scope while analyzing simulation accuracy. The model is based on a differential-algebraic system, and an optimization process allows model parameter estimation and verification while reducing the input data scope. Current losses, theoretical storage capacity, open circuit voltage, and ohmic cell resistance are used as fitting parameters. Internal electrochemical phenomena are represented by a self-discharge current while material related losses are represented by a changing ohmic resistance. Upon reducing input data the deviation between the model and measurements shows an insignificant increase of 2% even for a 60% input data reduction. The developed grey box model is easily adaptable to other VRFB and is highly integrable into an existing energy architecture. Full article
(This article belongs to the Special Issue Material Design and Development for Redox Flow Batteries II)
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