Boosting the high rate and durability of lithium–sulfur batteries using a bidirectional catalyst of a polyoxometalate-cyclodextrin supramolecular compound

Song, Jian; Jiang, Yuanyuan; Lu, Yizhong; Cao, Yundong; Zhang, Yuxi; Fan, Linlin; Liu, Hong; Gao, Guanggang

doi:10.1039/d3qi02696e

Cited by 4 publications

(1 citation statement)

References 59 publications

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“…In addition to the surface coating of commercial separators with metal–based, carbon–based, MOF, and polymer materials, researchers have also expressed significant interest in the unique structures of ceramic materials and cellulose materials . Ceramic materials are known for their outstanding high temperature resistance, while cellulose materials offer the ability to modulate porosity .…”

Section: Fiber-based Modificationsmentioning

confidence: 99%

Advanced Separator Materials for Enhanced Electrochemical Performance of Lithium–Sulfur Batteries: Progress and Prospects

Lin,

Gao,

Lan

et al. 2024

Langmuir

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Lithium−sulfur (Li−S) batteries are promising energy storage devices owing to their high theoretical specific capacity and energy density. However, several challenges, including volume expansion, slow reaction kinetics, polysulfide shuttle effect and lithium dendrite formation, hinder their commercialization. Separators are a key component of Li−S batteries. Traditional separators, made of polypropylene and polyethylene, have certain limitations that should be addressed. Therefore, this review discusses the basic properties and mechanisms of Li−S battery separators, focuses on preparing different functionalized separators to mitigate the shuttle effect of polysulfides. This review also introduces future research trends, emphasizing the potential of separator functionalization in advancing the Li−S battery technology.

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Section: Fiber-based Modificationsmentioning

confidence: 99%

Advanced Separator Materials for Enhanced Electrochemical Performance of Lithium–Sulfur Batteries: Progress and Prospects

Lin,

Gao,

Lan

et al. 2024

Langmuir

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Fabrication of a Multi‐Functional Separator Incorporating Crown ether‐ Polyoxometalate Supramolecular Compound for Lithium‐Sulfur Batteries

Jiang,

Wu,

et al. 2024

Chemistry A European J

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Recently, research on polyoxometalates (POMs) has gained significant momentum. Owing to their properties as electronic sponges, POMs catalyst harbor substantial potential in lithium‐sulfur battery research. However, POMs undergo a transformation into reduced heteropoly blue (HPB) during electrochemical reactions, which then dissolve into the electrolyte, resulting in catalyst loss. In this research, we amalgamated 18‐crown‐6 (CR6) with K3PW12O40, (KPW), synthesized a novel POM‐based supramolecular compound, and integrated it with graphene oxide (GO) to fabricate a multi‐functional composite polypropylene (PP) separator KPW‐CR6/GO/PP. The crown ether array was employed to immobilize POM and construct ion transport channels, thereby enhancing the Li+ migration rate and capturing polysulfides. Subsequently, leveraging the stable structure and redox properties of POM, the polysulfide is catalyzed to transform and inhibit the shuttle effect, thereby protecting the Li anode. The lithium‐sulfur batteries with the Crown ether‐POM supramolecular compound separators, exhibit enhanced capacity and stability (1073.3 mAh g‐1 at 1.0 C, and 81.5% retention rate after 250 cycles). The battery (S loading: 3.2 mg cm−2) presents an initial specific discharge capacity of 543.4 mAh g−1 at 0.5 C, with 89.8% of the capacity retained after 160 cycles. This underlines the practical application potential of Crown ether‐POM supramolecular materials in Li−S batteries.

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Polyoxometalate-based nanozyme with laccase-mimicking activity for kanamycin detection based on colorimetric assay

Lu,

Xu,

Chen

2024

Microchim Acta

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Boosting the high rate and durability of lithium–sulfur batteries using a bidirectional catalyst of a polyoxometalate-cyclodextrin supramolecular compound

Abstract: In this work, a supramolecular compound {NaCo(H2O)6H6(PW12O40)3(C48H80O40)3(H2O)60} (PW12-CD) prepared by using Keggin-type H3PW12O40 (PW12) and cyclodextrin (CD) as precursors is utilized as modified material of separator to overcome the drawbacks...

Cited by 4 publications

References 59 publications

Advanced Separator Materials for Enhanced Electrochemical Performance of Lithium–Sulfur Batteries: Progress and Prospects

Advanced Separator Materials for Enhanced Electrochemical Performance of Lithium–Sulfur Batteries: Progress and Prospects

Fabrication of a Multi‐Functional Separator Incorporating Crown ether‐ Polyoxometalate Supramolecular Compound for Lithium‐Sulfur Batteries

Polyoxometalate-based nanozyme with laccase-mimicking activity for kanamycin detection based on colorimetric assay

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