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Sustainability
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Sustainable Electrochemical Materials and Processes
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Sustainable Electrochemical Materials and Processes

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Resources and Sustainable Utilization".

Deadline for manuscript submissions: closed (1 March 2024) | Viewed by 2187

Special Issue Editors

Dr. Haihui Joy Jiang

E-Mail Website
Guest Editor
Department of Chemistry and Chemical Biology, Harvard University 12 Oxford Street, Cambridge, MA 02138, USA
Interests: physical organic chemistry; ionic solvents, plasma electrochemistry; magnetoelectrochemistry; device engineering
Dr. Jeffrey G. Bell

E-Mail Website
Guest Editor
Department of Chemistry, Washington State University, Pullman, WA 99163, USA
Interests: electrochemical sensors; magnetoelectrochemistry; point-of-care diagnostics; 3D printing
Dr. Thomas C. Underwood

E-Mail Website
Guest Editor
Department of Aerospace Engineering and Engineering Mechanics, The University of Texas, Austin, TX 78712, USA
Interests: space propulsion; reactive transport; plasma (ionic gas); optical diagnostics

Special Issue Information

Dear Colleagues,

Climate change is causing increasing floods, drought, wildfires, and hurricanes. Over the past 50 years, climate and weather-related disasters have surged five-fold. Climate change is forcasted to cut world economy by $23 trillion by 2050. Our climate challenge is largely an energy challenge, as energy accounts for over 66% of global greenhouse gas emissions. Industrial processes such as the Haber-Bosch process (for producing nitrogen fertilizers) alone accounts for 1.4% of global CO2 emissions and consumes 1% of the world’s total energy production. Chemistry and materials science are key to building a sustainable circular economy, by utilizing renewable energy, designing zero-waste reactions, maximising energy efficiencies and lifecycles, and developing functional materials. This special issue will include original research in sustainable electrochemistry. Example research topics include but not limited to:

  • Electrochemical reactions powered by renewable energy sources (e.g., solar and wind)
  • Enhanced energy efficiency (or reaction yield) in electrochemical processes via rational design of solvents, electro-catalysts, interfacial structures or system setups
  • Implementation of magnetism into electrochemistry (i.e., Lorentz effects)
  • Using photoelectrochemistry or plasma electrochemistry to activate inert molecules and to create new reaction pathways
  • Advances in energy harnessing, storage, and conversion via electrochemical methods (e.g., triboelectrics, hydrogen production, fuel cells, and batteries)
  • Advances in electrochemical processes or devices that solve environmental challenges, such as capturing and converting CO2, generating fertilizers, breaking down plastics, making biofuels, treating water, preventing air pollution, or detecting environmental contaminants.
  • Electrochemical remediation of environmental pollutants and toxins

Research articles in this special issue will not only demonstrate advancement in developing electrochemical materials and processes, but they contribute to solving energy- and climate challenges.

Dr. Haihui Joy Jiang
Dr. Jeffrey G. Bell
Dr. Thomas C. Underwood
Guest Editors

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. Sustainability is an international peer-reviewed open access semimonthly 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

  • electrochemistry
  • solar cells
  • fuel cells
  • batteries
  • renewable energy
  • green electrochemistry
  • CO2 reduction
  • plasma chemistry
  • greenhouse gases
  • electrochemical technologies
  • biomass conversion
  • pollution control

Published Papers (2 papers)

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Research

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15 pages, 4635 KiB  
Article
Improved Capacitance of Electropolymerized Aniline Using Magnetic Fields
by William T. McLeod, Anjaiah Sheelam, Aspen K. Kroiss and Jeffrey G. Bell
Sustainability 2023, 15(21), 15419; https://doi.org/10.3390/su152115419 - 30 Oct 2023
Cited by 1 | Viewed by 837
Abstract
With the rise in intermittent energy production methods and portable electronics, energy storage devices must continue to improve. Supercapacitors are promising energy storage devices that are known for their rapid charging and discharging, but poor energy density. Experimentally, one can improve the energy [...] Read more.
With the rise in intermittent energy production methods and portable electronics, energy storage devices must continue to improve. Supercapacitors are promising energy storage devices that are known for their rapid charging and discharging, but poor energy density. Experimentally, one can improve the energy density by improving the operating cell voltage and/or improving the overall capacitance, which have traditionally been achieved using difficult, complicated, or expensive syntheses involving additional chemicals or many steps. In this work, we demonstrate a method to improve the capacitance of electropolymerized polyaniline (PANI, a conductive polymer common in supercapacitor applications) with zero additional energy input or chemical additives: the use of a permanent magnet. Using a pulsed-potential polymerization method, we show that the inclusion of a 530 mT magnetic field, placed directly under the surface of the working electrode during electropolymerization, can result in a PANI film with a capacitance of 190.6 mF; compare this to the same polymerization performed in the absence of a magnetic field, which has a significantly lower capacitance of 109.7 mF. Electrochemical impedance spectroscopy indicates that PANIs formed in the presence of magnetic fields demonstrate improved capacitor behavior, as well as lower internal resistance, when compared to PANIs formed in the absence of magnetic fields. To probe the performance and stability of PANI films synthesized in the presence and absence of magnetic fields, galvanostatic charge–discharge was completed for symmetric capacitor configurations. Interestingly, the PANI films formed in the presence of 530 mT magnetic fields maintained their capacitance for over 75,000 cycles, whereas the PANI films formed in the absence of magnet fields suffered serious capacitance losses after only 29,000 cycles. Furthermore, it is shown that performing the polymerization in magnetic fields results in a higher-capacitance polymer film than what is achieved using other methods of forced convection (i.e., mechanical stirring) and outperforms the expected capacitance (based on yield) by 13%, suggesting an influence beyond the magnetohydrodynamic effect. Full article
(This article belongs to the Special Issue Sustainable Electrochemical Materials and Processes)
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14 pages, 745 KiB  
Perspective
Unconventional and Emerging Approaches to CO2 Reduction
by Jeffrey G. Bell and Thomas C. Underwood
Sustainability 2024, 16(2), 713; https://doi.org/10.3390/su16020713 - 13 Jan 2024
Cited by 1 | Viewed by 868
Abstract
This perspective highlights unconventional and emerging approaches to CO2 reduction. These methods encompass the use of topological materials and 3D printing in electrochemistry and the broader fields of plasma- and magneto-electrochemistry. Sustainability in these methods offers a way to convert CO2 [...] Read more.
This perspective highlights unconventional and emerging approaches to CO2 reduction. These methods encompass the use of topological materials and 3D printing in electrochemistry and the broader fields of plasma- and magneto-electrochemistry. Sustainability in these methods offers a way to convert CO2 into value-added fuels in a circular energy economy. We identify challenges of reducing CO2 along sustainable pathways and detail ways that unconventional approaches can address these challenges. These include achieving high product selectivity toward desirable chemicals, high catalytic durability, high energy efficiency, and high conversion rates of CO2. Finally, we describe emerging impacts and opportunities of these unconventional approaches and key challenges. Full article
(This article belongs to the Special Issue Sustainable Electrochemical Materials and Processes)
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