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Advanced Opportunities and Insights on Novel Catalysts for Electrocatalytic Energy...
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Advanced Opportunities and Insights on Novel Catalysts for Electrocatalytic Energy Conversion

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Electrocatalysis".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 2992

Special Issue Editors

Dr. Jiefang Zhu

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Guest Editor
Angstrom Laboratory, Department of Chemistry, Uppsala University, Uppsala, Sweden
Interests: energy related materials; photocatalysis; electrocatalysis; material characterization; nanomaterials; synthesis; composites
Special Issues, Collections and Topics in MDPI journals
Dr. Jia Liu

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Guest Editor
Department of Chemistry, Northeast Normal University, Changchun 130024, China
Interests: metal-O2 batteries; catalysts for OER and ORR
Prof. Dr. Christian M. Julien

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Guest Editor
Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS-UMR 7590, 4 Place Jussieu, 75252 Paris, France
Interests: energy storage; solid-state ionics; lithium batteries; thin films
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The key challenge to developing sustainable energy systems lies heavily in the rational design and controllable synthesis of efficient, selective, and durable electrocatalysts for a wide range of electrochemical reactions, including hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), carbon dioxide reduction reaction (CO2RR), and nitrogen reduction reaction (NRR), which occur in different energy conversion devices (e.g., fuel cells, metal–oxygen batteries, and photoelectrochemical cells). Significant progress has been made to understand the relationships between preparation, structures, properties, and performance of electrocatalysts. However, in-depth insight into designing active electrocatalysts for targeted reactions is still required, and synthesizing novel electrocatalysts with excellent performance is also desirable. In situ and operando characterizations and/or characterizations using synchrotron and neutron facilities have shown obvious contributions to the field of electrocatalysis. This Special Issue aims to cover the most recent advances in electrocatalysts for different energy coversion applications, which includes novel design and sysnthesis of electrocatalysts to acieve component manipulation, morphology control, or structure engineering, advanced characterizations of electrocatalysts using state-of-the-art microscopic and spectroscopic techniques, the study of electrocatalytic mechanism, and the application exploration of electrocatalysts. Perspectives and reviews about challenges and opportunities for the electrocatalyst development are also highly appreciated.   

Dr. Jiefang Zhu
Dr. Jia Liu
Prof. Dr. Christian Julien
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. Catalysts 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

  • electrocatalysis 
  • energy conversion 
  • energy storage 
  • batteries 
  • fuel cells 
  • photoelectrochemistry

Published Papers (2 papers)

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Research

12 pages, 2095 KiB  
Article
Perspective of Use of Pd/rGO in a Direct Urea Microfluidic Fuel Cell
by M. P. Gurrola, J. C. Cruz, F. I. Espinosa-Lagunes, A. Martínez-Lázaro, J. Ledesma-García, L. G. Arriaga and R. A. Escalona-Villalpando
Catalysts 2023, 13(5), 788; https://0-doi-org.brum.beds.ac.uk/10.3390/catal13050788 - 22 Apr 2023
Cited by 2 | Viewed by 1257
Abstract
The urine/urea oxidation reaction through catalysts with a higher performance in direct urea microfluidic fuel cells (DUµFC) is a promising method for power generation due to the large amount of human and animal urine containing 2–2.5 wt% urea. This paper presents a study [...] Read more.
The urine/urea oxidation reaction through catalysts with a higher performance in direct urea microfluidic fuel cells (DUµFC) is a promising method for power generation due to the large amount of human and animal urine containing 2–2.5 wt% urea. This paper presents a study that used urea as fuel in a DUµFC in the presence of palladium supported by reduced graphene oxide (rGO) for power generation. Some parameters, such as urea, KOH and H2SO4 concentration and flux rate, among others, are optimized in order to carry out the evaluation of urine samples as fuel in an air-breathing microfluidic fuel cell. The results show that the Pd/rGo catalyst mixed with Nafion® in the anodic compartment is dispersed and attached to the paper fibers, generating electrical contact and giving rise to the reactions of interest. In addition, XRD analysis confirmed the successful deposition of Pd and rGo on the substrate. These electrochemical results are promising, since, despite the decrease in the general performance of the DUµFC under ideal conditions with respect to normal cells, the generation of energy from urine was demonstrated. Full article
(This article belongs to the Special Issue Advanced Opportunities and Insights on Novel Catalysts for Electrocatalytic Energy Conversion)
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14 pages, 6989 KiB  
Article
Catalytic Reduction of N2O by CO on Single-Atom Catalysts Au/C2N and Cu/C2N: A First-Principles Study
by Shengyang Su, Junmei Ma, Zhenhua Liu, Domoina Holiharimanana and Hao Sun
Catalysts 2023, 13(3), 578; https://0-doi-org.brum.beds.ac.uk/10.3390/catal13030578 - 13 Mar 2023
Cited by 1 | Viewed by 1259
Abstract
The catalytic conversion of greenhouse gases, such as N2O, is a promising way to mitigate global warming. In this work, density functional theory (DFT) studies were performed to study N2O reduction by CO over single-atom catalysts (SACs) and compare [...] Read more.
The catalytic conversion of greenhouse gases, such as N2O, is a promising way to mitigate global warming. In this work, density functional theory (DFT) studies were performed to study N2O reduction by CO over single-atom catalysts (SACs) and compare the performance of noble (Au/C2N) and non-noble (Cu/C2N) SACs. The computational results indicated that catalytic N2O reduction on both catalysts occurs via two mechanisms: (I) the N2O adsorption mechanism—starting from the adsorption on the catalysts, N2O decomposes to a N2 molecule and O-M/C2N intermediate, and then CO reacts with O atom on the O-M/C2N intermediate to form CO2; and (II) the CO adsorption mechanism—CO and N2O are adsorbed on the catalyst successively, and then a synergistic reaction occurs to produce N2 and CO2 directly. The computational results show that mechanism I exhibits an obvious superiority over mechanism II for both catalysts due to the lower activation enthalpy. The activation enthalpies of the rate-determining step in mechanism I are 1.10 and 1.26 eV on Au/C2N and Cu/C2N, respectively. These results imply that Cu/C2N, an abundant-earth SAC, can be as active as expensive Au/C2N. Herein, our research provides a theoretical foundation for the catalytic reduction of N2O and broadens the application of non-noble-metal SACs. Full article
(This article belongs to the Special Issue Advanced Opportunities and Insights on Novel Catalysts for Electrocatalytic Energy Conversion)
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