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Catalysts
Special Issues
Advanced Electrocatalysts for Fuel Cells and Metal–Air Batteries
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Advanced Electrocatalysts for Fuel Cells and Metal–Air Batteries

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

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 3212

Special Issue Editor

Dr. Chao Su

E-Mail Website1 Website2
Guest Editor
School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212100, China
Interests: solid oxide fuel cells; electrochemical catalysis (oxygen reduction/evolution reactions); metal–air batteries
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The rapid expansion of industrial activities and of the economy have caused serious issues such as global warming. Nowadays, environmental protection is becoming progressively important. Searching for new energy sources and energy conversion technologies has become one of the hottest areas of research. Fuel cells and metal–air batteries, as two key types of energy conversion and storage devices, have been widely studied in recent years. Therefore, this Special Issue focuses on fuel cells and metal–air batteries. Our areas of interest include, but are not limited to, the development of new electrocatalysts for fuel cells and metal–air batteries. Both theoretical calculations and experimental results are of interest. Furthermore, we highly encourage submissions of review articles that summarized the recent progress in the development of fuel cells and batteries.

Dr. Chao Su
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. 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

  • fuel cells
  • metal–air batteries
  • oxygen reduction reaction
  • oxygen evolution reaction
  • electrocatalysts

Published Papers (2 papers)

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Research

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15 pages, 5987 KiB  
Article
Fluorine Anion-Doped Ba0.6Sr0.4Co0.7Fe0.2Nb0.1O3-δ as a Promising Cathode for Protonic Ceramic Fuel Cells
by Yang Liu, Shanshan Jiang, Hao Qiu, Wei Wang, Elaine Miller and Chao Su
Catalysts 2023, 13(5), 793; https://doi.org/10.3390/catal13050793 - 23 Apr 2023
Cited by 4 | Viewed by 1570
Abstract
The widespread application of protonic ceramic fuel cells is limited by the lack of oxygen electrodes with excellent activity and stability. Herein, the strategy of halogen doping in a Ba0.6Sr0.4Co0.7Fe0.2Nb0.1O3-δ (BSCFN) cathode [...] Read more.
The widespread application of protonic ceramic fuel cells is limited by the lack of oxygen electrodes with excellent activity and stability. Herein, the strategy of halogen doping in a Ba0.6Sr0.4Co0.7Fe0.2Nb0.1O3-δ (BSCFN) cathode is discussed in detail for improving cathode activity. Ba0.6Sr0.4Co0.7Fe0.2Nb0.1O3-x-δFx (x = 0, 0.05, 0.1) cathode materials are synthesised by a solid-phase method. The XRD results show that fluorine anion-doped BSCFN forms a single-phase perovskite structure. XPS and titration results reveal that fluorine ion doping increases active oxygen and surface adsorbed oxygen. It also confines chemical bonds between cations and anions, which enhances the cathode’s catalytic performance. Therefore, an anode-supported single cell with the configuration of Ni-BaZr0.1Ce0.7Y0.1Yb0.1O3-δ (BZCYYb)|BZCYYb|Ba0.6Sr0.4Co0.7Fe0.2Nb0.1O3-0.1-δF0.1 (BSCFN-F0.1) achieved a high peak power density of 630 mW cm−2 at 600 °C. Moreover, according to the symmetrical cell test, the BSCFN-F0.1 electrode demonstrated a superb stability for nearly 400 h at 600 °C. This work focuses on the influence of fluorine anion incorporation upon the performance of cathode materials. It also analyses and discusses the effects of different fluorine ion incorporation amounts to occupy different oxygen positions. Full article
(This article belongs to the Special Issue Advanced Electrocatalysts for Fuel Cells and Metal–Air Batteries)
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Review

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18 pages, 2645 KiB  
Review
Progress in Developing LnBaCo2O5+δ as an Oxygen Reduction Catalyst for Solid Oxide Fuel Cells
by Fa Zheng and Shengli Pang
Catalysts 2023, 13(9), 1288; https://doi.org/10.3390/catal13091288 - 9 Sep 2023
Cited by 5 | Viewed by 1270
Abstract
Solid oxide fuel cells (SOFCs) represent a breed of eco-friendly, weather-independent, decentralized power generation technologies, distinguished for their broad fuel versatility and superior electricity generation efficiency. At present, SOFCs are impeded by a lack of highly efficient oxygen reduction catalysts, a factor that [...] Read more.
Solid oxide fuel cells (SOFCs) represent a breed of eco-friendly, weather-independent, decentralized power generation technologies, distinguished for their broad fuel versatility and superior electricity generation efficiency. At present, SOFCs are impeded by a lack of highly efficient oxygen reduction catalysts, a factor that significantly constrains their performance. The double perovskites LnBaCo2O5+δ (Ln = Lanthanide), renowned for their accelerated oxygen exchange and conductivity features, are widely acclaimed as a promising category of cathode catalysts for SOFCs. This manuscript offers a novel perspective on the physicochemical attributes of LnBaCo2O5+δ accumulated over the past two decades and delineates the latest advancements in fine-tuning the composition and nanostructure for SOFC applications. It highlights surface chemistry under operational conditions and microstructure as emerging research focal points towards achieving high-performance LnBaCo2O5+δ catalysts. This review offers a comprehensive insight into the latest advancements in utilizing LnBaCo2O5+δ in the field of SOFCs, presenting a clear roadmap for future developmental trajectories. Furthermore, it provides valuable insights for the application of double perovskite materials in domains such as water electrolysis, CO2 electrolysis, chemical sensors, and metal–air batteries. Full article
(This article belongs to the Special Issue Advanced Electrocatalysts for Fuel Cells and Metal–Air Batteries)
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