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Batteries
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Interfacial Regulation for Lithium-Sulfur Batteries
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Interfacial Regulation for Lithium-Sulfur Batteries

A special issue of Batteries (ISSN 2313-0105). This special issue belongs to the section "Battery Materials and Interfaces: Anode, Cathode, Separators and Electrolytes or Others".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 3391

Special Issue Editors

Dr. Yinglin Xiao

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Guest Editor
Department of Materials Science & Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Interests: lithium sulfur batteries; lithium battery; electrode; electrolyte
Prof. Dr. Yuanfu Deng

E-Mail Website
Guest Editor
Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
Interests: electrochemical energy storage; Li-ion batteries; Li-metal batteries; solid-state batteries; supercapacitors
Special Issues, Collections and Topics in MDPI journals
Dr. Xusong Qin

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Hong Kong Polytechnic University, Hong Kong, China
Interests: advanced materials for lithium-ion batteries and lithium–sulfur batteries; environmental electrochemistry

Special Issue Information

Dear Colleagues,

Lithium-sulfur batteries (LSBs) are considered one of the most promising candidates for the next generation of energy-storage systems due to their high theoretical and achievable energy density and the natural abundance of sulfur. However, their reversible charge-discharge process encounters challenges from both the anode and cathode. Regarding the anode, dendritic and dead Li-metal arises from the imperfect interphases between electrolyte and electrode, resulting in low lithium utilization and safety concerns. For the cathode, the dissolution of polysulfides and parasitic shuttling from cathode to anode lead to the deposition of insulating discharge product Li2S on the surface of cathode and anode, causing severe electrode passivation and poor cycling performance. These two issues originate from the imperfection of interphases between electrolyte and electrode. Therefore, interfacial regulation plays a crucial role in improving the electrochemical performance of LSBs.

This Special Issue will focus on the current status of LSBs as well as new material synthesis and battery assembly strategies to resolve the defective interphases between electrolyte and electrode, aiming to provide a direction to guide the further application and development of LSBs.

Dr. Yinglin Xiao
Prof. Dr. Yuanfu Deng
Dr. Xusong Qin
Guest Editors

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. Batteries 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

  • lithium–sulfur batteries
  • electrolyte
  • lithium metal anode
  • battery materials
  • solid-electrolyte interphase
  • advanced characterizations
  • theoretical calculations
  • mechanism exploration
  • interfacial regulation
  • battery modelling and simulation

Published Papers (2 papers)

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Research

11 pages, 2088 KiB  
Article
Dual-Functional Electrolyte Additive for Lithium–Sulfur Batteries Limits Lithium Dendrite Formation and Increases Sulfur Utilization Rate
by Chang Liu, Huiyuan Wu, Jiachun Wu, Yinglin Xiao and Yonghong Deng
Batteries 2023, 9(9), 444; https://doi.org/10.3390/batteries9090444 - 30 Aug 2023
Cited by 1 | Viewed by 1690
Abstract
Lithium–sulfur batteries (LSBs) have received great attention as promising candidates for next-generation energy-storage systems due to their high theoretical energy density. However, their practical energy density is limited by a large electrolyte-to-sulfur (E/S) ratio (>10 µL electrolyte/mg s), and their cycle [...] Read more.
Lithium–sulfur batteries (LSBs) have received great attention as promising candidates for next-generation energy-storage systems due to their high theoretical energy density. However, their practical energy density is limited by a large electrolyte-to-sulfur (E/S) ratio (>10 µL electrolyte/mg s), and their cycle performance encounters challenges from electrode passivation and Li dendrite formation. In this work, a dual-functional electrolyte additive of tetraethylammonium nitrate (TEAN) is presented to address these issues. NO3− as a high-donor-number (DN) salt anion can promote polysulfide dissolution, increase sulfur utilization, and alleviate electrode passivation. The tetraethylammonium cation can adsorb around Li protrusions to form a lithiophobic protective layer to inhibit the formation of Li dendrites. TEAN LSBs show improving capacity, cycling stability, and higher coulombic efficiency under lean electrolyte (5 μL electrolyte/mg s) conditions. Full article
(This article belongs to the Special Issue Interfacial Regulation for Lithium-Sulfur Batteries)
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14 pages, 4160 KiB  
Article
High Areal Capacity and Sustainable High Energy in Ferroelectric Doped Holey Graphene/Sulfur Composite Cathode for Lithium-Sulfur Batteries
by Claudia C. Zuluaga-Gómez, Balram Tripathi, Christian O. Plaza-Rivera, Rajesh K. Katiyar, Margarita Correa, Dhiren K. Pradhan, Gerardo Morell and Ram S. Katiyar
Batteries 2023, 9(6), 293; https://doi.org/10.3390/batteries9060293 - 26 May 2023
Viewed by 1348
Abstract
In this study, we are reporting the impact of the incorporation of ferroelectric nanoparticles (FNPs), such as BaTiO3 (BTO), BiFeO3 (BFO), Bi4NdTi3Fe0.7Ni0.3O15 (BNTFN), and Bi4NdTi3Fe0.5Co0.5 [...] Read more.
In this study, we are reporting the impact of the incorporation of ferroelectric nanoparticles (FNPs), such as BaTiO3 (BTO), BiFeO3 (BFO), Bi4NdTi3Fe0.7Ni0.3O15 (BNTFN), and Bi4NdTi3Fe0.5Co0.5O15 (BNTFC), as well as the mass loading of sulfur to fabricated solvent-free sulfur/holey graphene-carbon black/polyvinylidene fluoride (S/FNPs/CBhG/PVDF) composite electrodes to achieve high areal capacity for lithium-sulfur (Li-S) batteries. The dry-press method was adopted to fabricate composite cathodes. The hG, a conductive and lightweight scaffold derived from graphene, served as a matrix to host sulfur and FNPs for the fabrication of solvent-free composites. Raman spectra confirmed the dominant hG framework for all the composites, with strong D, G, and 2D bands. The surface morphology of the fabricated cathode system showed a homogeneous distribution of FNPs throughout the composites, confirmed by the EDAX spectra. The observed Li+ ion diffusion coefficient for the composite cathode started at 2.17 × 10−16 cm2/s (S25(CBhG)65PVDF10) and reached up to the highest value (4.15 × 10−15 cm2/s) for S25BNTFC5(CBhG)60PVDF10. The best discharge capacity values for the S25(CBhG)65PVDF10 and S25BNTFC5(CBhG)60PVDF10 composites started at 1123 mAh/gs and 1509 mAh/gs and dropped to 612 mAh/gs and 572 mAh/gs, respectively, after 100 cycles; similar behavior was exhibited by the other composites that were among the best. These are better values than those previously reported in the literature. The incorporation of ferroelectric nanoparticles in the cathodes of Li-S batteries reduced the rapid formation of polysulfides due to their internal electric fields. The areal capacity for the S25(CBhG)65PVDF10 composites was 4.84 mAh/cm2 with a mass loading of 4.31 mgs/cm2, while that for the S25BNTFC5(CBhG)60PVDF10 composites was 6.74 mAh/cm2 with a mass loading of 4.46 mgs/cm2. It was confirmed that effective FNP incorporation within the S cathode improves the cycling response and stability of cathodes, enabling the high performance of Li-S batteries. Full article
(This article belongs to the Special Issue Interfacial Regulation for Lithium-Sulfur Batteries)
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