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    Metal–Organic Framework-Based Separators for Enhancing Li–S Battery Stability: Mechanism of Mitigating Polysulfide Diffusion

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    Type
    Article
    Authors
    Li, Mengliu cc
    Wan, Yi cc
    Huang, Jing-Kai
    Assen, Ayalew Hussen Assen
    Hsiung, Chia-En
    Jiang, Hao cc
    Han, Yu cc
    Eddaoudi, Mohamed cc
    Lai, Zhiping cc
    Ming, Jun cc
    Li, Lain-Jong cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Engineering Program
    Chemical Science Program
    Functional Materials Design, Discovery and Development (FMD3)
    KAUST Catalysis Center (KCC)
    Material Science and Engineering Program
    Nanostructured Functional Materials (NFM) laboratory
    Physical Science and Engineering (PSE) Division
    Date
    2017-09-15
    Online Publication Date
    2017-09-15
    Print Publication Date
    2017-10-13
    Permanent link to this record
    http://hdl.handle.net/10754/625769
    
    Metadata
    Show full item record
    Abstract
    The shuttling effect of polysulfides severely hinders the cycle performance and commercialization of Li–S batteries, and significant efforts have been devoted to searching for feasible solutions to mitigate the effect in the past two decades. Recently, metal–organic frameworks (MOFs) with rich porosity, nanometer cavity sizes, and high surface areas have been claimed to be effective in suppressing polysulfide migration. However, the formation of large-scale and grain boundary-free MOFs is still very challenging, where a large number of grain boundaries of MOF particles may also allow the diffusion of polysulfides. Hence, it is still controversial whether the pores in MOFs or the grain boundaries play the critical role. In this study, we perform a comparative study for several commonly used MOFs, and our experimental results and analysis prove that a layer of MOFs on a separator did enhance the capacity stability. Our results suggest that the chemical stability and the aggregation (packing) morphology of MOF particles play more important roles than the internal cavity size in MOFs.
    Citation
    Li M, Wan Y, Huang J-K, Assen AH, Hsiung C-E, et al. (2017) Metal–Organic Framework-Based Separators for Enhancing Li–S Battery Stability: Mechanism of Mitigating Polysulfide Diffusion. ACS Energy Letters: 2362–2367. Available: http://dx.doi.org/10.1021/acsenergylett.7b00692.
    Sponsors
    The authors acknowledge the support from King Abdullah University of Science and Technology (KAUST).
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Energy Letters
    DOI
    10.1021/acsenergylett.7b00692
    Additional Links
    http://pubs.acs.org/doi/full/10.1021/acsenergylett.7b00692
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsenergylett.7b00692
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Functional Materials Design, Discovery and Development (FMD3); Chemical Science Program; Chemical Engineering Program; Material Science and Engineering Program; KAUST Catalysis Center (KCC)

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