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    Redox Species-Based Electrolytes for Advanced Rechargeable Lithium Ion Batteries

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    Type
    Article
    Authors
    Ming, Jun cc
    Li, Mengliu cc
    Kumar, Pushpendra
    Lu, Ang-Yu
    Wahyudi, Wandi
    Li, Lain-Jong cc
    KAUST Department
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2016-08-16
    Online Publication Date
    2016-08-16
    Print Publication Date
    2016-09-09
    Permanent link to this record
    http://hdl.handle.net/10754/622455
    
    Metadata
    Show full item record
    Abstract
    Seeking high-capacity cathodes has become an intensive effort in lithium ion battery research; however, the low energy density still remains a major issue for sustainable handheld devices and vehicles. Herein, we present a new strategy of integrating a redox species-based electrolyte in batteries to boost their performance. Taking the olivine LiFePO4-based battery as an example, the incorporation of redox species (i.e., polysulfide of Li2S8) in the electrolyte results in much lower polarization and superior stability, where the dissociated Li+/Sx2– can significantly speed up the lithium diffusion. More importantly, the presence of the S82–/S2– redox reaction further contributes extra capacity, making a completely new LiFePO4/Li2Sx hybrid battery with a high energy density of 1124 Wh kgcathode–1 and a capacity of 442 mAh gcathode–1. The marriage of appropriate redox species in an electrolyte for a rechargeable battery is an efficient and scalable approach for obtaining higher energy density storage devices.
    Citation
    Ming J, Li M, Kumar P, Lu A-Y, Wahyudi W, et al. (2016) Redox Species-Based Electrolytes for Advanced Rechargeable Lithium Ion Batteries. ACS Energy Letters 1: 529–534. Available: http://dx.doi.org/10.1021/acsenergylett.6b00274.
    Sponsors
    The research was supported by KAUST.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Energy Letters
    DOI
    10.1021/acsenergylett.6b00274
    Additional Links
    http://pubs.acs.org/doi/abs/10.1021/acsenergylett.6b00274
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsenergylett.6b00274
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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