Special Issue "Lithium-Sulfur Batteries"

A special issue of Batteries (ISSN 2313-0105).

Deadline for manuscript submissions: 31 January 2019

Special Issue Editor

Guest Editor
Dr. Sheng-Heng Chung

Materials Science and Engineering Program & Texas Materials Institute, The University of Texas at Austin, Austin, United States
Website | E-Mail
Interests: energy-storage materials; nanomaterial; porous material; electrochemistry; battery

Special Issue Information

Dear Colleagues,

Lithium-sulfur batteries store and discharge energy using a reversible conversion reaction that has no restrictions in maintaining the initial crystal chemistry of the materials during cells’ electrochemical cycling. Such an electrochemical conversion reaction enables the sulfur cathodes to have a high theoretical capacity of 1675 mA h g-1. Moreover, elemental sulfur offers the advantages of low cost and high natural abundance, allowing the lithium-sulfur battery to be a strong candidate for next-generation energy storage devices featuring a high energy density at an affordable operation cost.

As a novel energy-storage technology, the true potential or the full challenges of lithium-sulfur batteries are not yet clear, and there is a lack of practical analysis and investigation. The battery performances of the lithium-sulfur system suffer low sulfur utilization, poor cyclability, and severe self-discharge. These challenges essentially result from the intrinsic material limitations. The insulating nature of sulfur and its end-discharge products, lithium sulfides, causes sluggish reaction kinetics. The discharge/charge reactions at the sulfur cathode involve complex conversions among solid sulfur, liquid polysulfides, and solid sulfides. The successive physicochemical changes of the active material and the electrolyte lead to the consumption of electrolyte and the irreversible diffusion of soluble polysulfides, which affect the efficiency and reversibility of the cathode redox reaction. A result of the intrinsic material problems is that the electrochemical efficiency and stability of lithium-sulfur batteries are significantly determined by the extrinsic cell-fabrication parameters, such as the amount of sulfur and electrolyte used in the batteries. Therefore, this Special Issue, “Lithium-Sulfur Batteries”, will focus on the materials, cell designs, and battery engineering in understanding the fundamental importance of these factors when designing practical lithium-sulfur batteries.

Potential topics include, but are not limited to:

  • Electrode materials and electrolytes  for lithium-sulfur batteries;
  • Electrode and electrode-substrate design;
  • High-loading sulfur cathode;
  • Low electrolyte/sulfur ratio;
  • Performance lifetime and degradation studies.

Dr. Sheng-Heng Chung
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 papers will be 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 quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) is waived for well-prepared manuscripts submitted to this issue. 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
  • sulfur loading
  • sulfur content
  • electrode/sulfur ratio
  • electrode design
  • cycle life
  • self-discharge
  • lithium-anode stability
  • cell-failure mechanism
  • degradation

Published Papers (1 paper)

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Research

Open AccessFeature PaperArticle Nontrivial Effects of “Trivial” Parameters on the Performance of Lithium–Sulfur Batteries
Received: 7 March 2018 / Revised: 25 April 2018 / Accepted: 28 April 2018 / Published: 2 May 2018
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Abstract
A robust lithium-sulfur (Li–S) battery is constituted by a wide range of optimized fundamental parameters (e.g., amount of electrolyte, electrolyte additive, sulfur loading density, and the size of sulfur particles). In this paper, some other often-neglected “trivial” parameters (including assembly pressure of the
[...] Read more.
A robust lithium-sulfur (Li–S) battery is constituted by a wide range of optimized fundamental parameters (e.g., amount of electrolyte, electrolyte additive, sulfur loading density, and the size of sulfur particles). In this paper, some other often-neglected “trivial” parameters (including assembly pressure of the coil cells, thickness of spring/lithium foil in coin cells, sheet number of separator, and cut-off voltage) of Li–S batteries have been demonstrated to show pronounced effects on the battery performance. Our results indicate that the coin cell assembly pressure and sheet number of the separator play the important roles in suppressing polysulfide shuttling over battery cycling, which improves significantly the cycling life of Li–S batteries. The thickness of springs/lithium foils also affects the battery performance greatly. When switching the cut-off voltage of 1.5–3.0 V to narrower ones (1.7–2.5 V or 1.8–2.6 V), the cycling life of batteries at 0.2 C can be further enhanced to >300 cycles while with no drastic polysulfide shuttling. Adjusting these trivial parameters can thus synergistically improve the cycling performance of Li–S batteries. Full article
(This article belongs to the Special Issue Lithium-Sulfur Batteries)
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