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Applications of High-Performance Electrolyte Materials in Batteries

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Energy Materials".

Deadline for manuscript submissions: closed (20 August 2023) | Viewed by 4427

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Guest Editor
School of Chemistry and Materials, Nanjing University of Information Science & Technology, Nanjing, China
Interests: MXene; Li-ion batteries; energy storage
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Special Issue Information

Dear Colleagues,

Existing battery technologies still face performance and cost challenges, including barriers to specific energy, energy density, service life, and charge efficiency at high rates, originating from the fundamental behavior of the active and inactive materials used. With all their benefits and drawbacks, electrolytes play a key, critical role in terms of design and control of electrode processes, as well as regarding material interactions, performance, long-term stability, cost, and the safety of a battery.

Battery chemistry and the materials within are selected based on the requirements of the application. Li-ion has been dominating in applications that require high energy density, for instance, while Li-S, Li-air, Na-ion, Mg-ion, and other alternative battery chemistries have been developed in addition to Li-ion to further improve the energy density and to meet the cost, safety, and sustainability issues related to Li-ion technology. Solid electrolytes offer improved safety but currently at the cost of lower ionic conductivity, in comparison to liquid electrolytes. Common to all battery chemistries, understanding the phenomena and correlations within materials and at their interfaces is a requirement for the development of better and safer batteries.

This Special Issue focuses on materials related to electrolytes and electrode–electrolyte interfaces of the various modern battery technologies in research. We warmly welcome contributions of manuscripts reporting the following: development of electrolyte materials (liquid, polymer, and solid) and electrode coatings, as well as material characterization.

Prof. Dr. Weizhai Bao
Guest Editor

Manuscript Submission Information

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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-ion batteries
  • solid electrolyte batteries
  • lithium-sulfur batteries
  • sodium-sulfur batteries
  • high-performance electrolytes
  • electrode coatings
  • energy materials

Published Papers (2 papers)

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Research

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9 pages, 3341 KiB  
Article
Sn-Substituted Argyrodite Li6PS5Cl Solid Electrolyte for Improving Interfacial and Atmospheric Stability
by Seul-Gi Kang, Dae-Hyun Kim, Bo-Joong Kim and Chang-Bun Yoon
Materials 2023, 16(7), 2751; https://doi.org/10.3390/ma16072751 - 29 Mar 2023
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Abstract
Sulfide-based solid electrolytes exhibit good formability and superior ionic conductivity. However, these electrolytes can react with atmospheric moisture to generate H2S gas, resulting in performance degradation. In this study, we attempted to improve the stability of the interface between Li metal [...] Read more.
Sulfide-based solid electrolytes exhibit good formability and superior ionic conductivity. However, these electrolytes can react with atmospheric moisture to generate H2S gas, resulting in performance degradation. In this study, we attempted to improve the stability of the interface between Li metal and an argyrodite Li6Ps5Cl solid electrolyte by partially substituting P with Sn to form an Sn–S bond. The solid electrolyte was synthesized via liquid synthesis instead of the conventional mechanical milling method. X-ray diffraction analyses confirmed that solid electrolytes have an argyrodite structure and peak shift occurs as substitution increases. Scanning electron microscopy and energy-dispersive X-ray spectroscopy analyses confirmed that the particle size gradually increased, and the components were evenly distributed. Moreover, electrochemical impedance spectroscopy and DC cycling confirmed that the ionic conductivity decreased slightly but that the cycling behavior was stable for about 500 h at X = 0.05. The amount of H2S gas generated when the solid electrolyte is exposed to moisture was measured using a gas sensor. Stability against atmospheric moisture was improved. In conclusion, liquid-phase synthesis could be applied for the large-scale production of argyrodite-based Li6PS5Cl solid electrolytes. Moreover, Sn substitution improved the electrochemical stability of the solid electrolyte. Full article
(This article belongs to the Special Issue Applications of High-Performance Electrolyte Materials in Batteries)
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Review

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20 pages, 3968 KiB  
Review
Achieving High Performance Electrode for Energy Storage with Advanced Prussian Blue-Drived Nanocomposites—A Review
by Dingyu Cui, Ronghao Wang, Chengfei Qian, Hao Shen, Jingjie Xia, Kaiwen Sun, He Liu, Cong Guo, Jingfa Li, Feng Yu and Weizhai Bao
Materials 2023, 16(4), 1430; https://doi.org/10.3390/ma16041430 - 08 Feb 2023
Cited by 2 | Viewed by 1904
Abstract
Recently, Prussian blue analogues (PBAs)-based anode materials (oxides, sulfides, selenides, phosphides, borides, and carbides) have been extensively investigated in the field of energy conversion and storage. This is due to PBAs’ unique properties, including high theoretical specific capacity, environmental friendly, and low cost. [...] Read more.
Recently, Prussian blue analogues (PBAs)-based anode materials (oxides, sulfides, selenides, phosphides, borides, and carbides) have been extensively investigated in the field of energy conversion and storage. This is due to PBAs’ unique properties, including high theoretical specific capacity, environmental friendly, and low cost. We thoroughly discussed the formation of PBAs in conjunction with other materials. The performance of composite materials improves the electrochemical performance of its energy storage materials. Furthermore, new insights are provided for the manufacture of low-cost, high-capacity, and long-life battery materials in order to solve the difficulties in different electrode materials, combined with advanced manufacturing technology and principles. Finally, PBAs and their composites’ future challenges and opportunities are discussed. Full article
(This article belongs to the Special Issue Applications of High-Performance Electrolyte Materials in Batteries)
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