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Membranes
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Advanced Flexible Membranes for Next-Generation Electrochemical Energy Devices
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Advanced Flexible Membranes for Next-Generation Electrochemical Energy Devices

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Applications".

Deadline for manuscript submissions: 20 June 2024 | Viewed by 3673

Special Issue Editor

Dr. Yasser Ashraf Gandomi

E-Mail Website
Guest Editor
Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA 02142, USA
Interests: batteries; fuel cells; membranes; AI and machine learning; ALD
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

High-performance and robust membranes/separators are needed for the variety of electrochemical energy devices (EEDs). Depending on the type of EED, the design attributes and desired characteristics of an ideal membrane will vary. In particular, for next-generation EEDs (e.g., solid-state lithium batteries, metal–air batteries, hybrid flow batteries, and Li–CO2 batteries), the development of highly conductive, selective, and stable membranes with high mechanical flexibility is of significant importance. Furthermore, some of these EEDs may need to be designed for portable/wearable electronics, which further limits the design domain for such membranes.

Polymeric and hybrid polymer–ceramic membranes are usually very attractive choices for these classes of electrochemical energy storage/conversion devices. Not only does the polymer structure provide a tunable design framework, but the electrochemical and mechanical properties of these membranes can also be precisely engineered via functionalization, and by implanting various fillers (e.g., ceramic particles) within the polymer matrix. In addition, the capability of manufacturing such membranes using high-throughput manufacturing technologies (e.g., extrusion, 3D printing, and roll-to-roll (R2R) atomic layer deposition (ALD)) makes them even more desirable for large-scale production.

Considering the critical role of this class of flexible membranes in enabling next-generation EEDs, this Special Issue is dedicated to the application of these membranes in such devices. We also welcome the submission of recent works on the design and synthesis of novel and mechanically flexible membranes, as well as critical review papers from top and emerging research groups.

Dr. Yasser Ashraf Gandomi
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. 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 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

  • next-generation electrochemical energy devices
  • membranes
  • polymeric and hybrid polymer–ceramic structures

Published Papers (2 papers)

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Research

12 pages, 3714 KiB  
Article
Li7La3Zr2O12-co-LiNbO3 Surface Modification Improves the Interface Stability between Cathode and Sulfide Solid-State Electrolyte in All-Solid-State Batteries
by Shishuo Liang, Dong Yang, Jianhua Hu, Shusen Kang, Xue Zhang and Yanchen Fan
Membranes 2023, 13(2), 216; https://doi.org/10.3390/membranes13020216 - 09 Feb 2023
Cited by 1 | Viewed by 1706
Abstract
With the rapid development of energy storage and electric vehicles, thiophosphate-based all-solid-state batteries (ASSBs) are considered the most promising power source. In order to commercialize ASSBs, the interfacial problem between high-voltage cathode active materials and thiophosphate-based solid-state electrolytes needs to be solved in [...] Read more.
With the rapid development of energy storage and electric vehicles, thiophosphate-based all-solid-state batteries (ASSBs) are considered the most promising power source. In order to commercialize ASSBs, the interfacial problem between high-voltage cathode active materials and thiophosphate-based solid-state electrolytes needs to be solved in a simple, effective way. Surface coatings are considered the most promising approach to solving the interfacial problem because surface coatings could prevent direct physical contact between cathode active materials and thiophosphate-based solid-state electrolytes. In this work, Li7La3Zr2O12 (LLZO) and LiNbO3 (LNO) coatings for LiCoO2 (LCO) were fabricated by in-situ interfacial growth of two high-Li+ conductive oxide electrolytes on the LCO surface and tested for thiophosphate-based ASSBs. The coatings were obtained from a two-step traditional sol–gel coatings process, the inner coatings were LNO, and the surface coatings were LLZO. Electrochemical evaluations confirmed that the two-layer coatings are beneficial for ASSBs. ASSBs containing LLZO-co-LNO coatings LiCoO2 (LLZO&LNO@LCO) significantly improved long-term cycling performance and discharge capacity compared with those assembled from uncoated LCO. LLZO&LNO@LCO||Li6PS5Cl (LPSC)||Li-In delivered discharge capacities of 138.8 mAh/g, 101.8 mAh/g, 60.2 mAh/g, and 40.2 mAh/g at 0.05 C, 0.1 C, 0.2 C, and 0.5 C under room temperature, respectively, and better capacity retentions of 98% after 300 cycles at 0.05 C. The results highlighted promising low-cost and scalable cathode material coatings for ASSBs. Full article
(This article belongs to the Special Issue Advanced Flexible Membranes for Next-Generation Electrochemical Energy Devices)
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12 pages, 4402 KiB  
Article
Sodium Super Ionic Conductor-Type Hybrid Electrolytes for High Performance Lithium Metal Batteries
by Po-Yu Sung, Mi Lu, Chien-Te Hsieh, Yasser Ashraf Gandomi, Siyong Gu and Wei-Ren Liu
Membranes 2023, 13(2), 201; https://doi.org/10.3390/membranes13020201 - 06 Feb 2023
Cited by 3 | Viewed by 1501
Abstract
Composite solid electrolytes (CSEs), composed of sodium superionic conductor (NASICON)-type Li1+xAlxTi2-x(PO4)3 (LATP), poly (vinylidene fluoride-hexafluoro propylene) (PVDF-HFP), and lithium bis (trifluoromethanesulfonyl)imide (LiTFSI) salt, are designed and fabricated for lithium-metal batteries. The effects of the [...] Read more.
Composite solid electrolytes (CSEs), composed of sodium superionic conductor (NASICON)-type Li1+xAlxTi2-x(PO4)3 (LATP), poly (vinylidene fluoride-hexafluoro propylene) (PVDF-HFP), and lithium bis (trifluoromethanesulfonyl)imide (LiTFSI) salt, are designed and fabricated for lithium-metal batteries. The effects of the key design parameters (i.e., LiTFSI/LATP ratio, CSE thickness, and carbon content) on the specific capacity, coulombic efficiency, and cyclic stability were systematically investigated. The optimal CSE configuration, superior specific capacity (~160 mAh g−1), low electrode polarization (~0.12 V), and remarkable cyclic stability (a capacity retention of 86.8%) were achieved during extended cycling (>200 cycles). In addition, with the optimal CSE structure, a high ionic conductivity (~2.83 × 10−4 S cm−1) was demonstrated at an ambient temperature. The CSE configuration demonstrated in this work can be employed for designing highly durable CSEs with enhanced ionic conductivity and significantly reduced interfacial electrolyte/electrode resistance. Full article
(This article belongs to the Special Issue Advanced Flexible Membranes for Next-Generation Electrochemical Energy Devices)
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