Interlinked Carbon Nanocages-Coated Separator as an Efficient Trap for Soluble Polysulfides in a Lithium–Sulfur Battery

Yang, Zhen; Zhang, Xuejian; Li, Zheng; Chen, Linlin; Song, Zhaohai; Zhang, Jianmin; Qiu, Xiangyun; Zheng, Zongmin

doi:10.1021/acs.energyfuels.1c03319

Cited by 8 publications

(5 citation statements)

References 41 publications

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“…From the UV-visible spectrum of Supplementary Figure S5E , it can be known that the absorption peak intensity of the solution after PBO-KOH-G adsorbed lithium polysulfide is the lowest, which further proves that PBO-activated carbon has a stronger adsorption capacity for polysulfide ( Hou et al, 2017 ). From Supplementary Figure S5F , it can be clearly seen that the color of PBO-KOH-G is lighter, indicating that its ability to adsorb polysulfides is stronger ( Yang et al, 2021 ). In addition, the XPS measurement was also conducted to study the strong chemical adsorption of polysulfide of PBO-KOH-G after adsorption of polysulfide, as shown in Supplementary Figures S7A–C .…”

Section: Resultsmentioning

confidence: 99%

The effect of different poly fibers separator-modified materials on blocking polysulfides for high performance Li-S batteries

Meng

Sun

et al. 2022

Front. Chem.

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Herein, we reported that KOH impregnation can generate a large number of porous structures with fruitful nitrogen self-doped groups during the carbonized process for poly (p-phenylene terephthalamide) fiber and poly (p-phenylene benzobisoxazole) fiber (denoted as PPTA and PBO, respectively). The intrinsical insulation, volume change, and shuttle effect of polysulfides then can be more significantly improved for the PBO-coated separator than the PPTA case. The discharge capacity primary achieves 1,322 mA h/g, which retains 827 mA h/g even after 200 cycles at 0.2 C for the cell with PBO-coated separator. The reversible specific discharge capacity maintains 841 mA h/g with a Coulomb efficiency of 99.7% at 5 C. The nitrogen self-doped nanocarbon particles are etched by KOH with the simple one-step preparation, which has promising application as Li-S battery cathode.

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Section: Resultsmentioning

confidence: 99%

The effect of different poly fibers separator-modified materials on blocking polysulfides for high performance Li-S batteries

Meng

Sun

et al. 2022

Front. Chem.

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“…The platform shown in Fig. 1 is used to perform cyclic charge-discharge tests and data collection [39]. The Li-S battery has excellent electrochemical performance at different rates, and the rest of the battery information is shown in Table Ⅰ.…”

Section: ⅱ Data Processing Of Li-s Batterymentioning

confidence: 99%

Prediction of Health Level of Multiform Lithium Sulfur Batteries Based on Incremental Capacity Analysis and an Improved LSTM

Zhang,

Sun,

Kang

et al. 2024

Prot. Control Mod. Power Syst.

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Capacity estimation plays a crucial role in battery management systems, and is essential for ensuring the safety and reliability of lithium-sulfur (Li-S) batteries. This paper proposes a method that uses a long short-term memory (LSTM) neural network to estimate the state of health (SOH) of Li-S batteries. The method uses health features extracted from the charging curve and incremental capacity analysis (ICA) as input for the LSTM network. To enhance the robustness and accuracy of the network, the Adam algorithm is employed to optimize specific hyperparameters. Experimental data from three different groups of batteries with varying nominal capacities are used to validate the proposed method. The results demonstrate the effectiveness of the method in accurately estimating the capacity degradation of all three batteries. Also, the study examines the impact of different lengths of network training sets on capacity estimation. The results reveal that the ICA-LSTM model achieves a prediction accuracy of mean absolute error 4.6% and mean squared error 0.21% with three different training set lengths of 20%, 40%, and 60%. The analysis demonstrates that the lightweight model maintains high SOH estimation accuracy even with a small training set, and exhibits strong adaptive and generalization capabilities when applied to different Li-S batteries. Overall, the proposed method, supported by experimental validation and analysis, demonstrates its efficacy in ensuring accurate and reliable SOH estimation, thereby enhancing the safety and performance of Li-S batteries.

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“…All of these merits can provide stronger lithium sulfide binding sites. By constructing a three-dimensional ordered macroporous structure of PPy, the sulfur not only provided a fast electron transfer pathway but also had a high efficiency buffer space. In addition, polar ZnO can greatly limit LiPSs through strong chemical adsorption.…”

Section: Single Metals and Compoundsmentioning

confidence: 99%

Overview of the Latest Developments and Perspectives about Noncarbon Sulfur Host Materials for High Performance Lithium–Sulfur Batteries

et al. 2022

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Lithium–sulfur (Li–S) batteries have attracted great attention in environmentally and friendly energy storage systems due to their excellent theoretical specific capacities and high energy densities. In addition, the element sulfur has a wide range of raw materials and low production costs and is considered to be a material with the most development potential. However, the poor electrical conductivity of sulfur, the volume expansion of sulfur during polarization, and the shuttle effect of lithium polysulfides (LiPSs) severely hinder the commercialization of Li–S batteries. Since carbon materials containing light nonpolar or weakly polar substances are used as sulfur hosts, there will be some difficulties in cycling stability, and the volumetric energy densities of Li–S batteries will be destroyed. In order to solve the existing problems, some polar substances are introduced into the cathode material to improve the cycle stability and effectively suppress the shuttle effect. This review presents polar materials commonly used in Li–S batteries, including single metals, metal nitrides, metal oxides, metal sulfides, and conducting polymers. Finally, this review not only summarizes the research directions and challenges of polar material applications but also looks forward to the development prospects of batteries, provides a pathway for the practical application of noncarbon sulfur host materials in Li–S batteries, and inspires more researchers to work on cathode materials.

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Interlinked Carbon Nanocages-Coated Separator as an Efficient Trap for Soluble Polysulfides in a Lithium–Sulfur Battery

Cited by 8 publications

References 41 publications

The effect of different poly fibers separator-modified materials on blocking polysulfides for high performance Li-S batteries

The effect of different poly fibers separator-modified materials on blocking polysulfides for high performance Li-S batteries

Prediction of Health Level of Multiform Lithium Sulfur Batteries Based on Incremental Capacity Analysis and an Improved LSTM

Overview of the Latest Developments and Perspectives about Noncarbon Sulfur Host Materials for High Performance Lithium–Sulfur Batteries

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