Cited by 20Advancements in Battery MaterialsAdvanced Battery Technologies ResearchAdvanced Battery Materials and Technologies

Low-Temperature Characteristics and Film-Forming Mechanism of Elemental Sulfur Additive on Graphite Negative Electrode

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Jurng, Sunhyung, Kim, Hyun-seung, Lee, Jae Gil, Ryu, Ji Heon, Oh, Seung M.·2016·Journal of The Electrochemical Society

Abstract

We report here that the low-temperature performance of graphite electrode is improved by adding a small amount of elemental sulfur (S 8 ) into the graphite negative electrode. The reversible capacity at −30°C is much larger for the sulfur-added graphite electrode. The origin of this beneficial feature is examined through impedance analysis, which illustrates that the charge transfer resistance is much smaller in the sulfur-added graphite electrode at low temperatures. In the first lithiation step, the elemental sulfur is electrochemically reduced to be lithium polysulfide (Li 2 S 8 ), which is soluble in the working solvent (carbonate-based ones). Organic thiocarbonates are generated by the chemical reaction between the lithium polysulfide and carbonate solvents. The as-generated thiocarbonates are then electrochemically decomposed to form the sulfur-containing surface film. The superior low-temperature performance of the sulfur-added graphite is thus attributed to the presence of sulfur-enriched surface film, which seems to facilitate the charge transfer reaction between the graphite and lithium.

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  • Elemental sulfur and allyl disulfide were reported to have the capability to reduce SEI impedance, which can effectively improve low-temperature battery performance.

    “Furthermore, in addition to the sulfur-containing additives mentioned above, elemental sulfur and allyl disulfide were also reported to have the capability to reduce SEI impedance as well, which can effectively improve LT battery performance [116,117].”

    From Review on Low-Temperature Electrolytes for Lithium-Ion and Lithium Metal Batteries (2023) · cites this paper as [116]

    The Results and Discussion report better low-temperature performance with elemental sulfur, but attribute it to lower charge-transfer resistance, not lower SEI resistance. They state that SEI resistance was higher for the sulfur-added electrode. The cited paper studies elemental sulfur, not allyl disulfide. (LLM, conf=0.88)

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Authors
Jurng, S., Kim, H.-S., Lee, J. G., Ryu, J. H., & Oh, S. M.
Affiliations
  • Seoul National University (KR)
  • Tech University of Korea (KR)
Venue
Journal of The Electrochemical Society
Published
2015-11-18
Volume
163
Issue
2
Pages
A223-A228
ISSN
  • 0013-4651 (ISSN-L)
  • 1945-7111
OpenAlex
W2332405083
Cited by
20
References
32
Citations by year
2026: 1 · 2024: 2 · 2023: 4 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 3 · 2018: 1 · 2017: 1 · 2016: 2
FWCI
0.64
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
Journal of The Electrochemical Society (publishedVersion, cc-by-nc-nd)
Funders
LG Chem
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Battery Materials
  • Physical Sciences › Engineering › Automotive Engineering › Advanced Battery Technologies Research
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Battery Materials and Technologies
Keywords
graphite anode, low-temperature performance, lithium-ion batteries, lithium polysulfides, charge transfer resistance, film-forming mechanism, reversible capacity

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