Polymethacrylate-comb-copolymer electrolyte for solid-state energy storage devices

Jae Hun Lee, Jung Yup Lim, Jung Tae Park, Jung Min Lee, Jong Hak Kim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We report a highly ion-conductive polymer electrolyte, based on a poly(2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate)-poly(oxyethylene methacrylate)-comb (PBE-comb) copolymer and the 1-ethyl-3-methylimidazolium dicyanamide (EMIM-DCA) ionic liquid, for use in a solid-state supercapacitor. Selective interactions between the poly(oxyethylene methacrylate) (POEM) chains and the EMIM-DCA induce the formation of a microphase-separated structure, as evidenced by Fourier-transform infrared spectroscopy, transmission electron microscopy, and differential scanning calorimetry. The well-defined nanostructured morphology effectively suppresses the aggregation of EMIM-DCA to provide ion-transport pathways that facilitate the fast diffusion of mobile ions. The capacitance of the solid-state supercapacitor formed with the PBE/EMIM-DCA electrolyte (125.1 F g−1) was much greater than that of the conventional poly(vinyl alcohol) (PVA)/H3PO4 electrolyte (39.5 F g−1) due to its higher ionic conductivity and superior affinity for the electrode. The fast ion-diffusion properties of the PBE/EMIM-DCA electrolyte was confirmed by its high capacitance retention (70%) at a fast scan rate, significantly higher than that observed for the PVA/H3PO4 electrolyte. Moreover, the supercapacitor composed of the PBE/EMIM-DCA electrolyte showed considerable cycling stability (91.1% after 10,000 charge-discharge cycles). The PBE/EMIM-DCA electrolyte is therefore a promising candidate for use in high-performance solid-state supercapacitors and energy-storage systems.

Original languageEnglish
Pages (from-to)25-33
Number of pages9
JournalMaterials and Design
Volume149
DOIs
Publication statusPublished - 2018 Jul 5

Fingerprint

Energy storage
Electrolytes
Copolymers
Ions
Methacrylates
Capacitance
Ionic Liquids
Ionic conductivity
polymethacrylic acid
Ionic liquids
Fourier transform infrared spectroscopy
Differential scanning calorimetry
Polymers
Alcohols
Agglomeration
Transmission electron microscopy
Electrodes
Supercapacitor

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Lee, Jae Hun ; Lim, Jung Yup ; Park, Jung Tae ; Lee, Jung Min ; Kim, Jong Hak. / Polymethacrylate-comb-copolymer electrolyte for solid-state energy storage devices. In: Materials and Design. 2018 ; Vol. 149. pp. 25-33.
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abstract = "We report a highly ion-conductive polymer electrolyte, based on a poly(2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate)-poly(oxyethylene methacrylate)-comb (PBE-comb) copolymer and the 1-ethyl-3-methylimidazolium dicyanamide (EMIM-DCA) ionic liquid, for use in a solid-state supercapacitor. Selective interactions between the poly(oxyethylene methacrylate) (POEM) chains and the EMIM-DCA induce the formation of a microphase-separated structure, as evidenced by Fourier-transform infrared spectroscopy, transmission electron microscopy, and differential scanning calorimetry. The well-defined nanostructured morphology effectively suppresses the aggregation of EMIM-DCA to provide ion-transport pathways that facilitate the fast diffusion of mobile ions. The capacitance of the solid-state supercapacitor formed with the PBE/EMIM-DCA electrolyte (125.1 F g−1) was much greater than that of the conventional poly(vinyl alcohol) (PVA)/H3PO4 electrolyte (39.5 F g−1) due to its higher ionic conductivity and superior affinity for the electrode. The fast ion-diffusion properties of the PBE/EMIM-DCA electrolyte was confirmed by its high capacitance retention (70{\%}) at a fast scan rate, significantly higher than that observed for the PVA/H3PO4 electrolyte. Moreover, the supercapacitor composed of the PBE/EMIM-DCA electrolyte showed considerable cycling stability (91.1{\%} after 10,000 charge-discharge cycles). The PBE/EMIM-DCA electrolyte is therefore a promising candidate for use in high-performance solid-state supercapacitors and energy-storage systems.",
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Polymethacrylate-comb-copolymer electrolyte for solid-state energy storage devices. / Lee, Jae Hun; Lim, Jung Yup; Park, Jung Tae; Lee, Jung Min; Kim, Jong Hak.

In: Materials and Design, Vol. 149, 05.07.2018, p. 25-33.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Polymethacrylate-comb-copolymer electrolyte for solid-state energy storage devices

AU - Lee, Jae Hun

AU - Lim, Jung Yup

AU - Park, Jung Tae

AU - Lee, Jung Min

AU - Kim, Jong Hak

PY - 2018/7/5

Y1 - 2018/7/5

N2 - We report a highly ion-conductive polymer electrolyte, based on a poly(2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate)-poly(oxyethylene methacrylate)-comb (PBE-comb) copolymer and the 1-ethyl-3-methylimidazolium dicyanamide (EMIM-DCA) ionic liquid, for use in a solid-state supercapacitor. Selective interactions between the poly(oxyethylene methacrylate) (POEM) chains and the EMIM-DCA induce the formation of a microphase-separated structure, as evidenced by Fourier-transform infrared spectroscopy, transmission electron microscopy, and differential scanning calorimetry. The well-defined nanostructured morphology effectively suppresses the aggregation of EMIM-DCA to provide ion-transport pathways that facilitate the fast diffusion of mobile ions. The capacitance of the solid-state supercapacitor formed with the PBE/EMIM-DCA electrolyte (125.1 F g−1) was much greater than that of the conventional poly(vinyl alcohol) (PVA)/H3PO4 electrolyte (39.5 F g−1) due to its higher ionic conductivity and superior affinity for the electrode. The fast ion-diffusion properties of the PBE/EMIM-DCA electrolyte was confirmed by its high capacitance retention (70%) at a fast scan rate, significantly higher than that observed for the PVA/H3PO4 electrolyte. Moreover, the supercapacitor composed of the PBE/EMIM-DCA electrolyte showed considerable cycling stability (91.1% after 10,000 charge-discharge cycles). The PBE/EMIM-DCA electrolyte is therefore a promising candidate for use in high-performance solid-state supercapacitors and energy-storage systems.

AB - We report a highly ion-conductive polymer electrolyte, based on a poly(2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate)-poly(oxyethylene methacrylate)-comb (PBE-comb) copolymer and the 1-ethyl-3-methylimidazolium dicyanamide (EMIM-DCA) ionic liquid, for use in a solid-state supercapacitor. Selective interactions between the poly(oxyethylene methacrylate) (POEM) chains and the EMIM-DCA induce the formation of a microphase-separated structure, as evidenced by Fourier-transform infrared spectroscopy, transmission electron microscopy, and differential scanning calorimetry. The well-defined nanostructured morphology effectively suppresses the aggregation of EMIM-DCA to provide ion-transport pathways that facilitate the fast diffusion of mobile ions. The capacitance of the solid-state supercapacitor formed with the PBE/EMIM-DCA electrolyte (125.1 F g−1) was much greater than that of the conventional poly(vinyl alcohol) (PVA)/H3PO4 electrolyte (39.5 F g−1) due to its higher ionic conductivity and superior affinity for the electrode. The fast ion-diffusion properties of the PBE/EMIM-DCA electrolyte was confirmed by its high capacitance retention (70%) at a fast scan rate, significantly higher than that observed for the PVA/H3PO4 electrolyte. Moreover, the supercapacitor composed of the PBE/EMIM-DCA electrolyte showed considerable cycling stability (91.1% after 10,000 charge-discharge cycles). The PBE/EMIM-DCA electrolyte is therefore a promising candidate for use in high-performance solid-state supercapacitors and energy-storage systems.

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SN - 0264-1275

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