Highly stabilized sulfur cathode with natural fenugreek gum as binder

Chen, Ling; Jiang, Zhibin; Luo, Xuehuan; Zhong, Yisen; Wang, Huirong; Wang, Xianshu; Huang, Qiming; Liu, Xiang; Kawaguchi, Seigou; Li, Weishan

doi:10.1016/j.cej.2020.127769

Cited by 26 publications

(10 citation statements)

References 63 publications

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“…The charge–discharge curves in Figure h display the typical plateaus of the Li–S battery which nearly overlap from 10th to 30th, illustrating the excellent redox kinetics and cycling stability of battery with PNAVS binder for high sulfur loading. The reversible high areal capacity has already been superior to most reported state-of-the-art literatures with high sulfur loading (Figure i). ,,,− More literature results are summarized in Table S4. For demonstration, a battery with a high sulfur loading of 15 mg cm –2 was assembled that can power 10 lights for hours (Figure S18).…”

Section: Results and Discussionmentioning

confidence: 83%

“…Noteworthily, the battery can provide an ultrastable OCV for more than 3000 h with PNAVS, where the PNAGA and PVDF decreased at the very beginning, indicating the great advantage of PNAVS on LiPS adsorption, redox kinetics in Li–S batteries, and promising potential for future practical application and storage. This OCV stability for the battery with PNAVS has already surpassed most of the current reported batteries as shown in Figure b. − Dendrite formation is another issue for Li–S batteries. Asymmetrical Li/Cu semicells were employed to evaluate the Coulombic efficiency of different binders on lithium stripping/plating in Figure c.…”

Section: Results and Discussionmentioning

confidence: 85%

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Regulating the Molecular Interactions in Polymer Binder for High-Performance Lithium–Sulfur Batteries

Gong

Hou

et al. 2022

ACS Nano

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Polymer binders have been shown to efficiently conquer the notorious lithium polysulfide (LiPS) shuttle effects in lithium−sulfur (Li−S) batteries for years, but more study is needed. Herein, a water dispersible and molecular interaction regulated polymer binder (PNAVS) for Li−S batteries was elaborately designed by co-polymerizing N-acryloyl glycinamide and 3-(1-vinyl-3-imidazolio)propanesulfonate. We demonstrate that by modulating the multiple interactions between the functional groups through copolymerization the binder was able to coordinate the LiPSs with higher binding energy for shuttle effect alleviation and cycling performance improvement. In addition, the Li + diffusion coefficient is also optimized in the PNAVS binder, which facilitates acceleration of the redox kinetics during cycling. Consequently, the PNAVS binder renders the Li−S battery with an ultrastable open circuit voltage for more than 3000 h. Even with a high sulfur loading of 11.7 mg cm −2 , the battery can still exhibit excellent areal capacity of 12.21 mA h cm −2 . As proof of concept, a pouch cell was also demonstrated with the stable cycling performance for 110 cycles. The binder engineering strategy in this work will propel the practical applications of high-performance batteries.

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Section: Results and Discussionmentioning

confidence: 83%

Section: Results and Discussionmentioning

confidence: 85%

Regulating the Molecular Interactions in Polymer Binder for High-Performance Lithium–Sulfur Batteries

Gong

Hou

et al. 2022

ACS Nano

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“…[126] Additionally, gums are also regarded as potential binders for LSBs, given their diverse structural and functional characteristics. [52,102] Wan et al [104] proposed a natural peach gum (PG) that possesses numerous carboxyl and hydroxyl groups, resulting in watersoluble property, exceptional LiPS adsorption, and strong adhesion. Gum arabic (GA), a bio-derived polymer, is utilized as a binder for the sulfur electrode (Figure 10a).…”

Section: Eco-friendly Bindersmentioning

confidence: 99%

Recent Advances in Multifunctional Binders for High Sulfur Loading Lithium‐Sulfur Batteries

Guo,

Yang,

Huang

et al. 2023

Adv Funct Materials

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Lithium‐sulfur batteries (LSBs) are regarded as a highly promising next‐generation energy storage technology due to their exceptional theoretical capacity and energy density. However, the practical application of these batteries is hindered by several challenges, including significant volume change of active materials, severe shuttle effect of lithium polysulfides, inadequate electronic and ionic conductivity, and safety concerns. These issues are particularly pronounced in cathodes with high sulfur loading, which are essential for the effective implementation of LSBs. Binders are an essential constituent of sulfur cathodes, and they perform a crucial function in enhancing the efficacy of LSBs, particularly when subjected to high sulfur loading. A considerable amount of research has been conducted to investigate the potential of multifunctional binders to tackle the aforementioned challenges associated with LSBs. This article provides a comprehensive overview of the various roles that advanced multifunctional binders play in LSBs, including but not limited to preserving electrode integrity, capturing lithium polysulfides, regulating Li2S deposition, accelerating reaction kinetics, enhancing ionic and electronic conductivity, promoting sulfur cathode safety, and safeguarding the environment. Additionally, the paper outlines the challenges and prospects for future research endeavors aimed at creating innovative multifunctional binders and improving the overall performance of LSBs.

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“…As early as 2008, Huang et al found that gelatin is highly adhesive and can act as an electrode binder. 297 Recently, Chen et al 309 introduced a natural polymer fenugreek gum (FG) as the binder of the sulfur cathode for LSBs, on the one hand enabling the sulfur cathode to maintain its structural integrity, and on the other hand adsorbing polysulfides due to their abundant oxygen-containing functional groups. The binding energies between FG and Li 2 S n (1 ≤ n ≤ 4) were calculated and the results showed that the binding energy of FG with all Li 2 S n species (0.8887–1.3492 eV) was higher than that of PVDF (0.077–0.134 eV), which indicated that FG could better anchor Li 2 S n (1 ≤ n ≤ 4) species (Fig.…”

Section: Other Applications Of Bdc In Lsbsmentioning

confidence: 99%