Hybrid Sodium–Air Cell with Na[FSA–C 2 C 1 im][FSA] Ionic Liquid Electrolyte

Yao Kang, Feng Liang, Katsuro Hayashi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Na[FSA–C 2 C 1 im][FSA] (C 2 C 1 im + :1-ethyl-3-methylimidazolium and FSA :bis(fluorosulfony)amide) ionic liquid was utilized as the aprotic electrolyte in hybrid sodium–air cells for the first time. The sodium–air cells were operated at relatively high temperatures up to 70 °C to prove their excellent thermal stability. A large output power density was obtained by increasing the operation temperature because of the high Na + diffusivity and high ionic conductivity of the ionic liquid. The cells exhibited an extremely large specific capacity of 835 mAh g −1 at 50 °C; this capacity corresponds to 99% of the theoretical capacity. In addition, maximum areal output power density of 27.6 mW cm −2 was obtained at 50 °C. The Na[FSA–C 2 C 1 im][FSA] ionic liquid was proved to be a promising aprotic electrolyte to enhance the electrochemical performance of hybrid sodium–air cells.

Original languageEnglish
Pages (from-to)119-124
Number of pages6
JournalElectrochimica Acta
Volume218
DOIs
Publication statusPublished - Nov 10 2016

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Ionic Liquids
Ionic liquids
Electrolytes
Ionic conductivity
Amides
Thermodynamic stability
Temperature

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Hybrid Sodium–Air Cell with Na[FSA–C 2 C 1 im][FSA] Ionic Liquid Electrolyte . / Kang, Yao; Liang, Feng; Hayashi, Katsuro.

In: Electrochimica Acta, Vol. 218, 10.11.2016, p. 119-124.

Research output: Contribution to journalArticle

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abstract = "Na[FSA–C 2 C 1 im][FSA] (C 2 C 1 im + :1-ethyl-3-methylimidazolium and FSA − :bis(fluorosulfony)amide) ionic liquid was utilized as the aprotic electrolyte in hybrid sodium–air cells for the first time. The sodium–air cells were operated at relatively high temperatures up to 70 °C to prove their excellent thermal stability. A large output power density was obtained by increasing the operation temperature because of the high Na + diffusivity and high ionic conductivity of the ionic liquid. The cells exhibited an extremely large specific capacity of 835 mAh g −1 at 50 °C; this capacity corresponds to 99{\%} of the theoretical capacity. In addition, maximum areal output power density of 27.6 mW cm −2 was obtained at 50 °C. The Na[FSA–C 2 C 1 im][FSA] ionic liquid was proved to be a promising aprotic electrolyte to enhance the electrochemical performance of hybrid sodium–air cells.",
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AB - Na[FSA–C 2 C 1 im][FSA] (C 2 C 1 im + :1-ethyl-3-methylimidazolium and FSA − :bis(fluorosulfony)amide) ionic liquid was utilized as the aprotic electrolyte in hybrid sodium–air cells for the first time. The sodium–air cells were operated at relatively high temperatures up to 70 °C to prove their excellent thermal stability. A large output power density was obtained by increasing the operation temperature because of the high Na + diffusivity and high ionic conductivity of the ionic liquid. The cells exhibited an extremely large specific capacity of 835 mAh g −1 at 50 °C; this capacity corresponds to 99% of the theoretical capacity. In addition, maximum areal output power density of 27.6 mW cm −2 was obtained at 50 °C. The Na[FSA–C 2 C 1 im][FSA] ionic liquid was proved to be a promising aprotic electrolyte to enhance the electrochemical performance of hybrid sodium–air cells.

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