Effect of chemical reactivity of polysulfide toward carbonate-based electrolyte on the electrochemical performance of Li–S batteries

Yim, Taeeun; Park, Min; Yu, Ji‐Sang; Kim, Ki Jae; Im, Keun Yung; Kim, Jae‐Hun; Jeong, Goojin; Jo, Yong Nam; Woo, Sang‐Gil; Kang, Kyoung Seok; Lee, Ingurl; Kim, Young‐Jun

doi:10.1016/j.electacta.2013.06.039

Cited by 273 publications

(216 citation statements)

References 31 publications

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“…Conventional carbonate-based electrolytes may not be as promising as in Li-ion batteries, because the polysulfides can react with carbonate-based electrolyte via nucleophilic addition or substitution to form thiocarbonates and other small molecules. 143,144 The charge/discharge behaviour of polysulfide catholyte is very sensitive to the polarity of the supporting electrolyte. The poor stabilization of polysulfides in lowdielectric solvents such as THF and DOL seems beneficial to achieve high reversible capacity (Fig.…”

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confidence: 99%

A chemistry and material perspective on lithium redox flow batteries towards high-density electrical energy storage

et al. 2015

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Electrical energy storage system such as secondary batteries is the principle power source for portable electronics, electric vehicles and stationary energy storage. As an emerging battery technology, Li-redox flow batteries inherit the advantageous features of modular design of conventional redox flow batteries and high voltage and energy efficiency of Li-ion batteries, showing great promise as efficient electrical energy storage system in transportation, commercial, and residential applications. The chemistry of lithium redox flow batteries with aqueous or non-aqueous electrolyte enables widened electrochemical potential window thus may provide much greater energy density and efficiency than conventional redox flow batteries based on proton chemistry. This Review summarizes the design rationale, fundamentals and characterization of Li-redox flow batteries from a chemistry and material perspective, with particular emphasis on the new chemistries and materials. The latest advances and associated challenges/ opportunities are comprehensively discussed.

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confidence: 99%

A chemistry and material perspective on lithium redox flow batteries towards high-density electrical energy storage

et al. 2015

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“…7(c)). This strongly suggests that solvated Li(EC) 4 species enter the pores and cause some side reactions of S with EC solvents. We thought that the difference in characteristics of both composite materials would be affected simply by pore size, but the pore size distribution in Fig.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Micropore-rich High Surface Area Activated Carbon from N-doped Carbon Precursor and its Application to Positive Electrode in Lithium-sulfur Battery

et al. 2017

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Micropore-rich activated carbon with high surface area and pore volume was prepared by alkali activation of azulmic carbon (AZC) precursor as nitrogen-doped carbon; AZC was a carbonized product from azulmic acid. We successfully loaded a large amount of sulfur (S) into micropores of the activated AZC. Our two kinds of activated AZC (BET surface area: 1,747 and 2,319 m 2 g −1) can include S up to 55 and 62 wt%, respectively. The former activated AZC including S can be charged and discharged with lithium (Li) ion transfer stably and reversibly in glyme-based and carbonate-based electrolytes. The latter activated AZC can be charged and discharged in a glyme-based electrolyte. These different characteristics are due to a difference in fine pore structure between them. Our microporous activated AZC with high S loading is promising material as positive S electrode for rechargeable Li-S batteries.

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“…The reported Li-S batteries with carbonate electrolyte have also demonstrated improved safety and stabilized electrochemical performance. However, it is well known that most sulfur cathodes cannot undergo reversible Li-S redox reaction in carbonate electrolyte [123,124]. The irreversibility is due to the side reactions between intermediate polysulfides and carbonate solvents, which results in the decomposition of electrolyte and sharply reduced ionic conductivity [125].…”

Section: Sulfurmentioning

confidence: 99%

“…For the first time, they introduced different allotropes of sulfur molecules (small sulfur molecules and cyclo-S 8 ) into microporous and mesoporous structures. The [124,[134][135][136][137][138][139]. Microporous structure plays an important role in the formation of small sulfur molecules.…”

Section: A Confined Sulfur Molecules In Microporous Structuresmentioning

confidence: 99%

“…Qian's group developed sulfur-rich S 1−x Se x /C composites [144]. The introduction of Se in the sulfur cathode has two important functions: (1) reducing the formation of long-chain polysulfides; and (2) Based on recent literature, the developed small sulfur molecule-based cathodes have some common characteristics: (1) sulfur should be confined in microporous structures; (2) low sulfur content C-S composites (mostly less than 50 wt%); (3) solid-phase Li-S reactions; and (4) highly stable and reversible electrochemical performance [124,135,143,146,147]. It should be noted that sulfur cathode with the low content and areal loading is hard to meet the requirement for high-energy Li-S batteries.…”

Section: A Confined Sulfur Molecules In Microporous Structuresmentioning

confidence: 99%

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Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application

Yang

Adair

et al. 2018

Electrochem. Energ. Rev.

310

198

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Lithium-sulfur (Li-S) batteries have been considered as one of the most promising energy storage devices that have the potential to deliver energy densities that supersede that of state-of-the-art lithium ion batteries. Due to their high theoretical energy density and cost-effectiveness, Li-S batteries have received great attention and have made great progress in the last few years. However, the insurmountable gap between fundamental research and practical application is still a major stumbling block that has hindered the commercialization of Li-S batteries. This review provides insight from an engineering point of view to discuss the reasonable structural design and parameters for the application of Li-S batteries. Firstly, a systematic analysis of various parameters (sulfur loading, electrolyte/sulfur (E/S) ratio, discharge capacity, discharge voltage, Li excess percentage, sulfur content, etc.) that influence the gravimetric energy density, volumetric energy density and cost is investigated. Through comparing and analyzing the statistical information collected from recent Li-S publications to find the shortcomings of Li-S technology, we supply potential strategies aimed at addressing the major issues that are still needed to be overcome. Finally, potential future directions and prospects in the engineering of Li-S batteries are discussed.

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Effect of chemical reactivity of polysulfide toward carbonate-based electrolyte on the electrochemical performance of Li–S batteries

Cited by 273 publications

References 31 publications

A chemistry and material perspective on lithium redox flow batteries towards high-density electrical energy storage

A chemistry and material perspective on lithium redox flow batteries towards high-density electrical energy storage

Preparation of Micropore-rich High Surface Area Activated Carbon from N-doped Carbon Precursor and its Application to Positive Electrode in Lithium-sulfur Battery

Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application

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