MoO3/MoS2 flexible paper as sulfur cathode with synergistic suppress shuttle effect for lithium-sulfur batteries

Yang, Jie; Qu, Yuanduo; Lin, Xiuhua; Wang, Liying; Zheng, Zihan; Zhuang, Jian; Duan, Lianfeng

doi:10.1016/j.electacta.2022.140378

Cited by 20 publications

(3 citation statements)

References 53 publications

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“…[17,18] Additionally, conductive matrix with various porosity and structures were designed to offer physical confinement to limit the dissoluble polysulfides thus suppressing the "shuttle effect". [19,20] However, the nonpolar nature of carbon and its low tap density frustratingly reduce the efficiency of active S. Therefore, to design high efficiency S cathode for polysulfides adsorption and electrical enhancement, is under the way for the development of LSBs.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Identification on Typical Fe₃X (X=B, C, N) Compounds for Polysulfide Conversion in Lithium‐Sulfur Batteries

Sun,

Qian,

Guo

et al. 2024

Eur J Inorg Chem

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Li‐S batteries (LSBs) are considered as the attractive candidates for next‐generation high‐energy system due to their high energy and low cost. However, their practical application is hindered by several stubborn issues, including the poor electric conductivity of sulfur cathodes, the shuttle of lithium polysulfides (LiPSs) and the slow dynamics during charge/discharge cycles. Transitional iron (Fe)‐based compounds are regarded as effectively electrocatalysts for polysulfide conversion by accelerating the reaction kinetics and enhancing the electric conductivity electron/charge transfer. In this study, we investigate the typical transition Fe‐based compounds (Fe3X, X = B, C, N) known for their high catalytic ability and analyze their roles as sulfur host for LSBs using density functional theory (DFT). Our finding reveal that Fe3C and Fe3B surfaces exhibit more Fe‐S bonds compared to Fe3N surface, which explains the different electrochemical behaviors observed during battery testing with sulfur cathode. Additionally, Fe3N demonstrates greater structural stability and effective polysulfide adsorption according to DFT calculations, outperforming the other two compounds in these aspects. We believe that this theoretical investigation will guide the identification of highly efficient hosts for sulfur cathodes and open new avenues for sulfur host selection in LSBs.

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Section: Introductionmentioning

confidence: 99%

Theoretical Identification on Typical Fe₃X (X=B, C, N) Compounds for Polysulfide Conversion in Lithium‐Sulfur Batteries

Sun,

Qian,

Guo

et al. 2024

Eur J Inorg Chem

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show abstract

“…[1][2][3][4] Li-S batteries with high theoretical specific energy of 2600 Wh kg −1 are promising high-energy electrochemical energy storage systems in the future. [5][6][7] However, given the typical Li-S batteries, the electronically and ionically insulating sulfur and Li 2 S 2 /Li 2 S, and the accompanied severe volume change during repetitive cycling usually lead to low capacity. Especially, the shuttling effect of lithium polysulfides intermediates derived from the "solid-liquid" reaction substantially results in limited rate capability and disappointed cycling stability, seriously hindering the practical development for Li-S batteries.…”

Section: Introductionmentioning

confidence: 99%

Boosting solid–solid conversion kinetics of sulfurized polyacrylonitrile via MoS₂ doping for high‐rate and long‐life Li‐S batteries

Wang

Xie

2023

Carbon Neutralization

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Sulfurized polyacrylonitrile (SPAN) with a "solid-solid" conversion mechanism in carbonated-based electrolyte eradicating the polysulfides shutting issue is considered as an ideal cathode for stabilizing lithium-sulfur (Li-S) batteries. However, the sluggish reaction kinetics and less sulfur content of the SPAN limit its practical application. Herein, the MoS 2 doped SPAN (MoS 2 @SPAN) is demonstrated to rapidly accelerate the solid-solid conversion kinetics of SPAN for remarkably boosting high-power and long-life Li-S batteries. Benefitting from the accelerated lithium-ion (Li + ) transfer rate, a fast ion transport channel and enhanced redox reaction kinetics of sulfur to Li 2 S 2 /Li 2 S is realized via MoS 2 catalysis, and excellent electrochemical performance is achieved. Consequently, MoS 2 @SPAN delivers a high capacity of 626 mAh g −1 at 0.1 A g −1 , and simultaneously shows ultralong cycling life of 500 cycles with only 0.089% capacity decay rate at 2 A g −1 . Moreover, a superb capacity of 321 mAh g −1 at ultrahigh current density of 5 A g −1 is offered, outperforming most of the reported SPAN cathodes. This work provides a general and reliable strategy on the reliable design of SPAN cathode for high-rate and long-term Li-S batteries.

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“…However, the cycling performance of MoO 3 is not satisfactory due to the low conductivity of the compound, and its disintegration during discharge/charge cycles [18][19][20]. These issues might be reduced by combining MoO 3 and MoS 2 so that the latter can enhance the conductivity of the nanocomposite and prevents the rapid disintegration [21][22][23]. The methods suggested for the synthesis of MoS 2 /MoO 3 nanocomposites comprise of chemical vapor deposition [24], hydrothermal methods [25,26], in-situ growth [23], sulfur transfer [27], anion-exchange [28], and annealing treatment [29] using the precursor materials such as (NH 4 ) 6 Mo 7 O 24 and thiourea [23,28], organic amine, and MoO 3 [24], Mo metal powder and H 2 O 2 [27] as well as MoO 3 powders, sulfur and N 2 [29].…”

Section: Introductionmentioning

confidence: 99%

Molten Salt-Assisted Catalytic Preparation of MoS2/α-MoO3/Graphene as High-Performance Anode of Li-Ion Battery

Zhu

Kamali

2023

Catalysts

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We report on the facile and scalable catalytic conversion of natural graphite and MoS2 minerals into α-MoO3 nanoribbons incorporated into hexagonal MoS2 and graphene nanosheets, and evaluate the structural, morphological and electrochemical performances of the hybrid nanostructured material obtained. Mechanochemical treatment of raw materials, followed by catalytic molten salt treatment leads to the formation of nanostructures with promising electrochemical performances. We examined the effect of processing temperature on the electrochemical performance of the products. At 1100 °C, an excellent Li-ion storage capacity of 773.5 mAh g−1 is obtained after 180 cycles, considerably greater than that of MoS2 (176.8 mAh g−1). The enhanced capacity and the rate performance of this electrode are attributed to the well-integrated components, characterized by the formation of interfacial molybdenum oxycarbide layer during the synthesis process, contributing to the reduced electrical/electrochemical resistance of the sample. This unique morphology promotes the charge and ions transfer through the reduction of the Li-ion diffusion coefficient (1.2 × 10−18 cm2 s−1), enhancing the pseudocapacitive performance of the electrode; 59.3% at the scan rate of 0.5 mV s−1. This article provides a green and low-cost route to convert highly available natural graphite and MoS2 minerals into nanostructured hybrid materials with promising Li-ion storage performance.

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MoO3/MoS2 flexible paper as sulfur cathode with synergistic suppress shuttle effect for lithium-sulfur batteries

Cited by 20 publications

References 53 publications

Theoretical Identification on Typical Fe₃X (X=B, C, N) Compounds for Polysulfide Conversion in Lithium‐Sulfur Batteries

Theoretical Identification on Typical Fe₃X (X=B, C, N) Compounds for Polysulfide Conversion in Lithium‐Sulfur Batteries

Boosting solid–solid conversion kinetics of sulfurized polyacrylonitrile via MoS₂ doping for high‐rate and long‐life Li‐S batteries

Molten Salt-Assisted Catalytic Preparation of MoS2/α-MoO3/Graphene as High-Performance Anode of Li-Ion Battery

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MoO3/MoS2 flexible paper as sulfur cathode with synergistic suppress shuttle effect for lithium-sulfur batteries

Cited by 20 publications

References 53 publications

Theoretical Identification on Typical Fe3X (X=B, C, N) Compounds for Polysulfide Conversion in Lithium‐Sulfur Batteries

Theoretical Identification on Typical Fe3X (X=B, C, N) Compounds for Polysulfide Conversion in Lithium‐Sulfur Batteries

Boosting solid–solid conversion kinetics of sulfurized polyacrylonitrile via MoS2 doping for high‐rate and long‐life Li‐S batteries

Molten Salt-Assisted Catalytic Preparation of MoS2/α-MoO3/Graphene as High-Performance Anode of Li-Ion Battery

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Theoretical Identification on Typical Fe₃X (X=B, C, N) Compounds for Polysulfide Conversion in Lithium‐Sulfur Batteries

Theoretical Identification on Typical Fe₃X (X=B, C, N) Compounds for Polysulfide Conversion in Lithium‐Sulfur Batteries

Boosting solid–solid conversion kinetics of sulfurized polyacrylonitrile via MoS₂ doping for high‐rate and long‐life Li‐S batteries