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Processes
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Experiment, Modeling Research and Actual System Applications on the Electrochemical...
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Experiment, Modeling Research and Actual System Applications on the Electrochemical Flow Cells

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 10090

Special Issue Editor

Dr. Kyu Taek Cho

E-Mail Website
Guest Editor
Electrochemical and Thermal Energy Laboratory, Department of Mechanical Engineering, Northern Illinois University, 1425 Lincoln Hwy, DeKalb, IL 60115, USA
Interests: electrochemistry; thermal fluid science; battery; fuel cell; corrosion; HVAC system

Special Issue Information

Dear Colleagues,

Systems based on the electrochemical reaction have gained intense attention due to their excellent benefits such as high efficiency, low cost, and environmental-friendly operation. Especially, the electrochemical flow cells, which electrochemically treat the reactants provided from external sources to continuously generate electricity or chemicals, are enjoying a renaissance in the various forms of application.

However, the actual application of the promising flow cells has been restricted due to challenging issues such as durability, scale-up, and less reliable performance, requiring advents of technologies in the flow cells.

In this Special Issue, we aim to provide recent advances and breakthroughs in the electrochemical flow cells both fundamental, including experiment and modeling works, and actual system applications, with special focus on the systems based on electrochemical reaction, including fuel cells, redox flow batteries, electrolysis, and wastewater treatment systems etc.

Dr. Kyu Taek Cho
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. Processes 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 2400 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

  • flow battery
  • flow cell
  • electrolysis
  • fuel cell
  • electro-coagulation
  • capacitors
  • electro-deposition
  • electrochemical cell

Published Papers (2 papers)

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Research

22 pages, 3683 KiB  
Article
Techno-Economic Analysis of a Kilo-Watt Scale Hydrogen-Bromine Flow Battery System for Sustainable Energy Storage
by Yohanes Antonius Hugo, Wiebrand Kout, Guido Dalessi, Antoni Forner-Cuenca, Zandrie Borneman and Kitty Nijmeijer
Processes 2020, 8(11), 1492; https://doi.org/10.3390/pr8111492 - 18 Nov 2020
Cited by 18 | Viewed by 5546
Abstract
Transitioning to a renewable energy economy requires the widespread integration of solar and wind power, which are intermittent, into the electricity grid. To this goal, it is paramount to develop cost-competitive, reliable, location-independence, and large-scale energy storage technologies. The hydrogen bromine flow battery [...] Read more.
Transitioning to a renewable energy economy requires the widespread integration of solar and wind power, which are intermittent, into the electricity grid. To this goal, it is paramount to develop cost-competitive, reliable, location-independence, and large-scale energy storage technologies. The hydrogen bromine flow battery (HBFB) is a promising technology given the abundant material availability and its high power density. Here, the aim is to perform a comprehensive techno-economic analysis of a 500 kW nominal power/5 MWh HBFB storage system, based on the levelized cost of storage approach. Then, we systematically analyze stack and system components costs for both the current base and a future scenario (2030). We find that, for the base case, HBFB capital investments are competitive to Li-ion battery technology, highlighting the potential of large-scale HBFB market introduction. Improving the stack performance and reducing the stack and system costs are expected to result in ~62% reduction potential in capital investments. The base-case levelized cost of storage, $0.074/kWh, is sufficiently low for a wind-solar storage system to compete with a fossil-based power plant, with potential for reduction to $0.034/kWh in the future scenario. Sensitivity analysis indicates that the levelized cost of storage is most sensitive towards the stack lifetime, which motivates research efforts into advanced electrocatalysts with higher durability and ion-exchange membranes with improved selectivity. Full article
(This article belongs to the Special Issue Experiment, Modeling Research and Actual System Applications on the Electrochemical Flow Cells)
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11 pages, 1644 KiB  
Article
Electrochemical Hydrogen Production Using Separated-Gas Cells for Soybean Oil Hydrogenation
by Jorge Eduardo Esquerre Verastegui, Marco Antonio Zamora Antuñano, Juvenal Rodríguez Resendiz, Raul García García, Pedro Jacinto Paramo Kañetas and Daniel Larrañaga Ordaz
Processes 2020, 8(7), 832; https://doi.org/10.3390/pr8070832 - 13 Jul 2020
Cited by 3 | Viewed by 4038
Abstract
Although hydrogen is the most abundant element in the universe, it is not possible to find it in its purest state in nature. In this study, two-stage experimentation was carried out. The first stage was hydrogen production. The second stage was an electrochemical [...] Read more.
Although hydrogen is the most abundant element in the universe, it is not possible to find it in its purest state in nature. In this study, two-stage experimentation was carried out. The first stage was hydrogen production. The second stage was an electrochemical process to hydrogenate soybean oil in a PEM fuel cell. In the fist stage a Zirfon Perl UTP 500 membrane was used in an alkaline hydrolizer of separated gas to produce hydrogen, achieving 9.6 L/min compared with 5.1 L/min, the maximum obtained using a conventional membrane. The hydrogen obtained was used in the second stage to feed the fuel cell hydrogenating the soybean oil. Hydrogenated soybean oil showed a substantial diminished iodine index from 131 to 54.85, which represents a percentage of 58.13. This happens when applying a voltage of 90 mV for 240 min, constant temperature of 50 °C and one atm. This result was obtained by depositing 1 mg of Pt/cm 2 in the cathode of the fuel cell. This system represents a viable alternative for the use of hydrogen in energy generation. Full article
(This article belongs to the Special Issue Experiment, Modeling Research and Actual System Applications on the Electrochemical Flow Cells)
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