The Failure Mechanism of Lithium-Sulfur Batteries under Lean-Ether-Electrolyte Conditions

Jin, Qinghao; Qi, Xiaoqun; Yang, Fengyi; Jiang, Ruining; Xie, Yong; Qie, Long; Huang, Yunhui

doi:10.1016/j.ensm.2021.03.014

Cited by 53 publications

(29 citation statements)

References 31 publications

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“…[ 24,25 ] A variety of polysulfides, such as dianion S n 2− and radical anions S m − , with different chain lengths depends on the polysulfide concentration and solvent. [ 24–28 ] In the UV–vis absorption spectra of 7Li 2 S·3P 2 S 5 ·5S in the mixed solvent (Figure 2c), three main peaks are detected at 265, 410, and 610 nm, which are assigned to S 8 , S 4 2− , and S 3 ·− , respectively, according to the literature. [ 29 ] A weak shoulder corresponding to S 6 2− at ≈350 nm appears in the 1.0 m m solution.…”

Section: Resultsmentioning

confidence: 77%

Solution Processing via Dynamic Sulfide Radical Anions for Sulfide Solid Electrolytes

Gamo

Nishida

Nagai

et al. 2022

Adv Energy and Sustain Res

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Solution processing technology for the manufacturing of all‐solid‐state batteries (ASSBs) holds great promise of scalability and low cost over ball milling and solid‐state methods. However, conventional liquid‐phase synthesis for solid electrolytes has yet to translate into large‐scale manufacturing to address commercialization challenges. Herein, solution processing via dynamic sulfide radical anions is developed, providing rapid and scalable manufacturing of Li7P3S11 solid electrolytes (SEs). A mixture of Li2S, P2S5, and excess elemental sulfur in a mixed solvent of acetonitrile, tetrahydrofuran, and ethanol forms a homogenous precursor solution containing the S3 ·− radical anion. The presence of ethanol enhances the chemical stability of S3 ·−. The resulting sulfide radical anions serve as a mediator with two strategies: the soluble polysulfide formation and activation of P2S5, and thus allows the generation of the precursor solution in 2 min. The Li7P3S11 is prepared in 2 h without the need for ball milling or high‐energy treatment, which shows higher ionic conductivity (1.2 mS cm−1 at 25 °C) and excellent cell performance of ASSBs cells than Li7P3S11 prepared by ball milling. The solution processing technology reported here paves the way for the accelerated adoption of practical ASSBs manufacturing.

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Section: Resultsmentioning

confidence: 77%

Solution Processing via Dynamic Sulfide Radical Anions for Sulfide Solid Electrolytes

Gamo

Nishida

Nagai

et al. 2022

Adv Energy and Sustain Res

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“…Furthermore, a lower E/S ratio outcome produces a higher viscosity for the electrolyte leading to lower wettability and lower ionic conductivity and so an increased chargetransfer resistance of the cells. [50] In addition, using low electrolyte amounts in LiÀ S cells generally leads to significantly lower specific capacities, as well as electrolyte depletion induced by the uncontrolled growth of Li metal dendrites that react continually consuming the limited electrolyte. This can be considered as the main mechanism accountable for early LiÀ S cells failure.…”

Section: Liquid Electrolytesmentioning

confidence: 99%

“…In particular, the increased sulfur concentration gradient results in a more severe shuttle of the polysulfides leading to a faster corrosion of the anode and loss of active material. Furthermore, a lower E/S ratio outcome produces a higher viscosity for the electrolyte leading to lower wettability and lower ionic conductivity and so an increased charge‐transfer resistance of the cells [50] . In addition, using low electrolyte amounts in Li−S cells generally leads to significantly lower specific capacities, as well as electrolyte depletion induced by the uncontrolled growth of Li metal dendrites that react continually consuming the limited electrolyte.…”

Section: Liquid Electrolytesmentioning

confidence: 99%

Electrolyte Measures to Prevent Polysulfide Shuttle in Lithium‐Sulfur Batteries

Donato

Ates

Adenusi

et al. 2022

Batteries & Supercaps

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Batteries & Supercaps www.batteries-supercaps.org Review doi.org/10.1002/batt.202200097 Lithium-sulfur (LiÀ S) batteries are recognized as one of the most promising technologies with the potential to become the next-generation batteries. However, to ensure LiÀ S batteries reach commercialization, complex challenges remain, among which the tailoring of an appropriate electrolyte is the most important. This review discusses the role of electrolytes in LiÀ S batteries, focusing on the main issues and solutions for the shuttle mechanism of polysulfides and the instability of the interface with lithium metal. Herein, we present a background on LiÀ S chemistry followed by the state-of-the-art electrolytes highlighting the different strategies undertaken with liquid and solid electrolytes.

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“…This trade-off is exacerbated when considering the additional hydrophobicity of the conductive carbon supports of LSB cathodes, which further increases the E/C ratios due to the presence of electrochemically inactive unwetted regions in the electrode. Moreover, the dissolution of the PSs themselves are found to change the properties of the electrolytes, by increasing their viscosities and thus further reducing their wettability [93].…”

Section: Electrolyte Infiltration Simulationsmentioning

confidence: 99%

“…Therefore, studies that specifically focus on the electrolyte impregnation process and that try to find strategies to improve the wettability of the electrodes are desirable in order to better their performance [93,94]. However, to the best of our knowledge for LSBs, there is no imaging studies in the literature that directly follow the path of the electrolyte in real time, neither at the cell nor at the mesoscale level.…”

Section: Electrolyte Infiltration Simulationsmentioning

confidence: 99%

Perspectives on manufacturing simulations of Li-S battery cathodes

Arcelus¹,

Franco²

2022

J. Phys. Energy

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Lithium-Sulfur Batteries (LSBs) are one of the main contenders for next generation post lithium-ion batteries. As the process of scientific discovery advances, many of the challenges that prevent the commercial deployment of LSBs, specially at the most fundamental materials level, are slowly being addressed. However, batteries are complex systems that require not only from identifying suitable materials, but also from knowing how to assemble and manufacture all the components together in order to obtain an optimally working battery. This is not a simple task, as battery manufacturing is a multi-stepped, multi-parameter, highly correlated process, where many parameters compete, and deep knowledge of the systems is required in order to achieve the optimal manufacturing conditions, which has already been shown in the case of Lithium-Ion Batteries (LIBs). In these regards, manufacturing simulations have proven to be invaluable in order to advance in the knowledge of this exciting and technologically relevant field. Thus, in this work, we aim at providing future perspectives and opportunities that we think are interesting in order to create digital twins for the LSB manufacturing process. We also provide comprehensive and realistic ways in which already existing models could be adapted to LSBs in the short-term, and which are the challenges that might be found in the way.

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The Failure Mechanism of Lithium-Sulfur Batteries under Lean-Ether-Electrolyte Conditions

Cited by 53 publications

References 31 publications

Solution Processing via Dynamic Sulfide Radical Anions for Sulfide Solid Electrolytes

Solution Processing via Dynamic Sulfide Radical Anions for Sulfide Solid Electrolytes

Electrolyte Measures to Prevent Polysulfide Shuttle in Lithium‐Sulfur Batteries

Perspectives on manufacturing simulations of Li-S battery cathodes

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