Special Issue "Composite Electrode Membranes for Electrochemical Energy Storage & Conversion Devices"

A special issue of Membranes (ISSN 2077-0375).

Deadline for manuscript submissions: closed (31 January 2020).

Special Issue Editor

Dr. Giovanni Battista Appetecchi
Website
Guest Editor
ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Department for Sustainability (SSPT), Division for Sustainable Materials (PROMAS), Materials and Physicochemical Processes Laboratory (MATPRO), Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy
Interests: research and development of electrolyte/electrode materials/components for electrochemical energy storage systems; ionic liquids; polymer and gel electrolytes; lithium batteries
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Special Issue Information

Dear Colleagues,

Energy demand is still mainly satisfied by the direct but inefficient and polluting conversion of chemical energy of fossil fuels because of the lack of highly performing energy storage systems. Electrochemical power sources differ from others due to the fact that the energy conversion occurs from chemical into electrical without any intermediate step, resulting in higher energy efficiencies in addition to a much lower environmental impact due to the absence of any gaseous emission. Among the various choices, electrochemical devices, such as batteries, supercapacitors, and fuel cells, are one of the most, if not the most, suitable answers for efficient energy storage and conversion.

Electrode chemistry and formulation play a key role in the performance and safety of electrochemical devices. For instance, electrodes, in addition to electrochemical active species, have to contain passive components (electronic and/or ionic conductor, binder, etc.), which, even if not affecting the energy density, strongly influence the power density, cycling behavior, and reliability of the device. Therefore, although well-known over time, these issues are currently under deep investigation worldwide.

This Special Issue will offer an appealing forum to bring together the latest results obtained by key laboratories presently involved in R and D of composite electrodes for batteries, supercapacitors, and fuel cells. Again, this Special Issue represents an optimal site for welcoming the latest innovations and, accordingly, authors from top laboratories are invited to submit their forthcoming results.

Dr. Giovanni Battista Appetecchi
Guest Editor

Manuscript Submission Information

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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. Membranes 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 1400 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

  • batteries
  • supercapacitors
  • fuel cells
  • composite electrodes
  • electrode formulation

Published Papers (3 papers)

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Research

Open AccessArticle
The Use of Succinonitrile as an Electrolyte Additive for Composite-Fiber Membranes in Lithium-Ion Batteries
Membranes 2020, 10(3), 45; https://doi.org/10.3390/membranes10030045 - 17 Mar 2020
Abstract
In the present work, the effect of temperature and additives on the ionic conductivity of mixed organic/ionic liquid electrolytes (MOILEs) was investigated by conducting galvanostatic charge/discharge and ionic conductivity experiments. The mixed electrolyte is based on the ionic liquid (IL) (EMI/TFSI/LiTFSI) and organic [...] Read more.
In the present work, the effect of temperature and additives on the ionic conductivity of mixed organic/ionic liquid electrolytes (MOILEs) was investigated by conducting galvanostatic charge/discharge and ionic conductivity experiments. The mixed electrolyte is based on the ionic liquid (IL) (EMI/TFSI/LiTFSI) and organic solvents EC/DMC (1:1 v/v). The effect of electrolyte type on the electrochemical performance of a LiCoO2 cathode and a SnO2/C composite anode in lithium anode (or cathode) half-cells was also investigated. The results demonstrated that the addition of 5 wt.% succinonitrile (SN) resulted in enhanced ionic conductivity of a 60% EMI-TFSI 40% EC/DMC MOILE from ~14 mS·cm−1 to ~26 mS·cm−1 at room temperature. Additionally, at a temperature of 100 °C, an increase in ionic conductivity from ~38 to ~69 mS·cm−1 was observed for the MOILE with 5 wt% SN. The improvement in the ionic conductivity is attributed to the high polarity of SN and its ability to dissolve various types of salts such as LiTFSI. The galvanostatic charge/discharge results showed that the LiCoO2 cathode with the MOILE (without SN) exhibited a 39% specific capacity loss at the 50th cycle while the LiCoO2 cathode in the MOILE with 5 wt.% SN showed a decrease in specific capacity of only 14%. The addition of 5 wt.% SN to the MOILE with a SnO2/C composite-fiber anode resulted in improved cycling performance and rate capability of the SnO2/C composite-membrane anode in lithium anode half-cells. Based on the results reported in this work, a new avenue and promising outcome for the future use of MOILEs with SN in lithium-ion batteries (LIBs) can be opened. Full article
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Open AccessArticle
Composite Nafion Membranes with CaTiO3−δ Additive for Possible Applications in Electrochemical Devices
Membranes 2019, 9(11), 143; https://doi.org/10.3390/membranes9110143 - 31 Oct 2019
Cited by 2
Abstract
A composite membrane based on a Nafion polymer matrix incorporating a non-stoichiometric calcium titanium oxide (CaTiO3−δ) additive was synthesized and characterized by means of thermal analysis, dynamic mechanical analysis, and broadband dielectric spectroscopy at different filler contents; namely two concentrations of [...] Read more.
A composite membrane based on a Nafion polymer matrix incorporating a non-stoichiometric calcium titanium oxide (CaTiO3−δ) additive was synthesized and characterized by means of thermal analysis, dynamic mechanical analysis, and broadband dielectric spectroscopy at different filler contents; namely two concentrations of 5 and 10 wt.% of the CaTiO3−δ additive, with respect to the dry Nafion content, were considered. The membrane with the lower amount of additive displayed the highest water affinity and the highest conductivity, indicating that a too-high dose of additive can be detrimental for these particular properties. The mechanical properties of the composite membranes are similar to those of the plain Nafion membrane and are even slightly improved by the filler addition. These findings indicate that perovskite oxides can be useful as a water-retention and reinforcing additive in low-humidity proton-exchange membranes. Full article
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Open AccessArticle
LFP-Based Gravure Printed Cathodes for Lithium-Ion Printed Batteries
Membranes 2019, 9(6), 71; https://doi.org/10.3390/membranes9060071 - 07 Jun 2019
Abstract
Printed batteries have undergone increased investigation in recent years because of the growing daily use of small electronic devices. With this in mind, industrial gravure printing has emerged as a suitable production technology due to its high speed and quality, and its capability [...] Read more.
Printed batteries have undergone increased investigation in recent years because of the growing daily use of small electronic devices. With this in mind, industrial gravure printing has emerged as a suitable production technology due to its high speed and quality, and its capability to produce any shape of image. The technique is one of the most appealing for the production of functional layers for many different purposes, but it has not been highly investigated. In this study, we propose a LiFePO4 (LFP)-based gravure printed cathode for lithium-ion rechargeable printed batteries and investigate the possibility of employing this printing technique in battery manufacture. Full article
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