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Single-Ion Polymer Electrolyte Membranes Enable Lithium-Ion Batteries with a Broad Operating Temperature Range

Authors

  • Dr. Weiwei Cai,

    1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 (Singapore)
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  • Dr. Yunfeng Zhang,

    1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 (Singapore)
    2. Sustainable Energy Laboratory, China University of Geosciences Wuhan, 388 Lumo RD, Wuhan, 430074 (PR China)
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  • Dr. Jing Li,

    1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 (Singapore)
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  • Dr. Yubao Sun,

    1. Sustainable Energy Laboratory, China University of Geosciences Wuhan, 388 Lumo RD, Wuhan, 430074 (PR China)
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  • Dr. Hansong Cheng

    Corresponding author
    1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 (Singapore)
    2. Sustainable Energy Laboratory, China University of Geosciences Wuhan, 388 Lumo RD, Wuhan, 430074 (PR China)
    • Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 (Singapore)===

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Abstract

Conductive processes involving lithium ions are analyzed in detail from a mechanistic perspective, and demonstrate that single ion polymeric electrolyte (SIPE) membranes can be used in lithium-ion batteries with a wide operating temperature range (25–80 °C) through systematic optimization of electrodes and electrode/electrolyte interfaces, in sharp contrast to other batteries equipped with SIPE membranes that display appreciable operability only at elevated temperatures (>60 °C). The performance is comparable to that of batteries using liquid electrolyte of inorganic salt, and the batteries exhibit excellent cycle life and rate performance. This significant widening of battery operation temperatures coupled with the inherent flexibility and robustness of the SIPE membranes makes it possible to develop thin and flexible Li-ion batteries for a broad range of applications.

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