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Energies
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Recent Progress in Metal–Air Batteries
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Recent Progress in Metal–Air Batteries

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "D1: Advanced Energy Materials".

Deadline for manuscript submissions: closed (17 May 2021) | Viewed by 6526
The submission system is still open. Submit your paper and select the Journal "Energies" and the Special Issue "Recent Progress in Metal–Air Batteries" via: https://susy.mdpi.com/user/manuscripts/upload?journal=energies. Please contact the journal editor Adele Min ([email protected]) for any queries.

Special Issue Editor

Prof. Dr. Hee-Dae Lim

E-Mail Website
Guest Editor
Center for Energy Storage Research, Korea Institute of Science and Technology, Hwarang‐ro 14‐gil 5, Seongbuk‐gu, Seoul 02792, Korea
Interests: next-generation batteries; metal–air batteries; solid electrolyte; all-solid-state batteries; rechargeable Mg batteries

Special Issue Information

Dear Colleagues,

We are inviting new submissions of papers for a Special Issue on ‘Recent Progress in Metal–Air Batteries’ on the subject fields dealing with issues on metal–air batteries. In the last two decades, the Li–O2 battery has received great attention because it can deliver the largest energy density among many candidates for next-generation batteries. The extremely high capacity and the use of unlimited source of oxygen from the ambient air make it more attractive as a post-Li-ion battery. Although there have been great advances in the field of the Li–O2 battery, however, numerous problems and challenges still remain unsolved. Current Li–O2 systems are suffering from a relatively low energy efficiency, poor cyclability, and formation of side-product. Therefore, to advance the Li–O2 battery, it is critically important to understand the current trends of the Li–O2 battery, and it is time to explore a new metal–gas battery.

This Special Issue on ‘Recent Progress in Metal–Air Batteries’ will cover all issues on the Li–O2 battery with respect to development of air electrodes, electrolytes, anode material, solid/liquid catalysts, etc. Furthermore, it aims to cover fundamental studies and recent analysis techniques for understanding reaction mechanisms. We are especially interested in papers dealing with current challenges on lithium–oxygen chemistry, and also, we are open to all papers that study new metal–gas systems such as Li–CO2, Li–O2/CO2, Li–SO2, Na–O2, Mg–O2 batteries, etc.

Prof. Dr. Hee-Dae Lim
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. Energies 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 2600 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

  • Li–air battery
  • Li–O2 battery
  • air electrode
  • metal–gas batteries
  • catalyst
  • energy efficiency

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Published Papers (2 papers)

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Research

11 pages, 2226 KiB  
Article
Electrochemical Evaluation of Surface Modified Free-Standing CNT Electrode for Li–O2 Battery Cathode
by Ji Hyeon Lee, Hyun Wook Jung, In Soo Kim, Min Park and Hyung-Seok Kim
Energies 2021, 14(14), 4196; https://doi.org/10.3390/en14144196 - 12 Jul 2021
Cited by 8 | Viewed by 2091
Abstract
In this study, carbon nanotubes (CNTs) were used as cathodes for lithium–oxygen (Li–O2) batteries to confirm the effect of oxygen functional groups present on the CNT surface on Li–O2 battery performance. A coating technology using atomic layer deposition was introduced [...] Read more.
In this study, carbon nanotubes (CNTs) were used as cathodes for lithium–oxygen (Li–O2) batteries to confirm the effect of oxygen functional groups present on the CNT surface on Li–O2 battery performance. A coating technology using atomic layer deposition was introduced to remove the oxygen functional groups present on the CNT surface, and ZnO without catalytic properties was adopted as a coating material to exclude the effect of catalytic reaction. An acid treatment process (H2SO4:HNO3 = 3:1) was conducted to increase the oxygen functional groups of the existing CNTs. Therefore, it was confirmed that ZnO@CNT with reduced oxygen functional groups lowered the charging overpotential by approximately 230 mV and increased the yield of Li2O2, a discharge product, by approximately 13%. Hence, we can conclude that the ZnO@CNT is suitable as a cathode material for Li–O2 batteries. Full article
(This article belongs to the Special Issue Recent Progress in Metal–Air Batteries)
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12 pages, 3151 KiB  
Article
Use of Carbon Additives towards Rechargeable Zinc Slurry Air Flow Batteries
by Nak Heon Choi, Diego del Olmo, Diego Milian, Nadia El Kissi, Peter Fischer, Karsten Pinkwart and Jens Tübke
Energies 2020, 13(17), 4482; https://doi.org/10.3390/en13174482 - 31 Aug 2020
Cited by 8 | Viewed by 3667
Abstract
The performance of redox flow batteries is notably influenced by the electrolyte, especially in slurry-based flow batteries, as it serves as both an ionic conductive electrolyte and a flowing electrode. In this study, carbon additives were introduced to achieve a rechargeable zinc slurry [...] Read more.
The performance of redox flow batteries is notably influenced by the electrolyte, especially in slurry-based flow batteries, as it serves as both an ionic conductive electrolyte and a flowing electrode. In this study, carbon additives were introduced to achieve a rechargeable zinc slurry flow battery by minimizing the zinc plating on the bipolar plate that occurs during charging. When no carbon additive was present in the zinc slurry, the discharge current density was 24 mA∙cm−2 at 0.6 V, while the use of carbon additives increased it to up to 38 mA∙cm−2. The maximum power density was also increased from 16 mW∙cm−2 to 23 mW∙cm−2. Moreover, the amount of zinc plated on the bipolar plate during charging decreased with increasing carbon content in the slurry. Rheological investigation revealed that the elastic modulus and yield stress are directly proportional to the carbon content in the slurry, which is beneficial for redox flow battery applications, but comes at the expense of an increase in viscosity (two-fold increase at 100 s−1). These results show how the use of conductive additives can enhance the energy density of slurry-based flow batteries. Full article
(This article belongs to the Special Issue Recent Progress in Metal–Air Batteries)
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