Poly-vinylidene-fluoride/p-benzoquinone gel polymer electrolyte with good performance by redox mediator effect for Li-Air battery

Young Bok Kim, Il To Kim, Myeong Jun Song, Moo Whan Shin

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this study, the poly-vinylidene fluoride (PVDF)/p-benzoquinone (pBQ) gel polymer electrolyte (GPE) is synthesized well with LiTFSI/TEGDME for Li-Air battery (LAB) applications. The PVDF/pBQ GPEs are characterized by electrochemical analysis and compared to the PVDF GPE. We confirm that pBQ molecule in PVDF GPE shows redox mediate behavior during charge-discharge process. Employing PVDF/pBQ GPE for LAB leads to an improved cycleability from 2 to over 30. In addition it results in a charge voltage decrease from around 4.2 V to around 3.3 V. The energy cycle efficiency (ECE) is improved about 15%. The pBQ accelerates to the formation of an amorphous phase on synthesized PVDF GPE matrix by acting inhibitor for polymerization. It leads to ionic conductivity improvement of synthesized GPE from 2.83 mScm-1 to 4.98 mScm-1.

Original languageEnglish
Pages (from-to)821-828
Number of pages8
JournalElectrochimica Acta
Volume210
DOIs
Publication statusPublished - 2016 Aug 20

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Electrolytes
Polymers
Gels
Air
Ionic conductivity
Discharge (fluid mechanics)
polyvinylidene fluoride
benzoquinone
Oxidation-Reduction
Polymerization
Molecules
Electric potential

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

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title = "Poly-vinylidene-fluoride/p-benzoquinone gel polymer electrolyte with good performance by redox mediator effect for Li-Air battery",
abstract = "In this study, the poly-vinylidene fluoride (PVDF)/p-benzoquinone (pBQ) gel polymer electrolyte (GPE) is synthesized well with LiTFSI/TEGDME for Li-Air battery (LAB) applications. The PVDF/pBQ GPEs are characterized by electrochemical analysis and compared to the PVDF GPE. We confirm that pBQ molecule in PVDF GPE shows redox mediate behavior during charge-discharge process. Employing PVDF/pBQ GPE for LAB leads to an improved cycleability from 2 to over 30. In addition it results in a charge voltage decrease from around 4.2 V to around 3.3 V. The energy cycle efficiency (ECE) is improved about 15{\%}. The pBQ accelerates to the formation of an amorphous phase on synthesized PVDF GPE matrix by acting inhibitor for polymerization. It leads to ionic conductivity improvement of synthesized GPE from 2.83 mScm-1 to 4.98 mScm-1.",
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Poly-vinylidene-fluoride/p-benzoquinone gel polymer electrolyte with good performance by redox mediator effect for Li-Air battery. / Kim, Young Bok; Kim, Il To; Song, Myeong Jun; Shin, Moo Whan.

In: Electrochimica Acta, Vol. 210, 20.08.2016, p. 821-828.

Research output: Contribution to journalArticle

TY - JOUR

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N2 - In this study, the poly-vinylidene fluoride (PVDF)/p-benzoquinone (pBQ) gel polymer electrolyte (GPE) is synthesized well with LiTFSI/TEGDME for Li-Air battery (LAB) applications. The PVDF/pBQ GPEs are characterized by electrochemical analysis and compared to the PVDF GPE. We confirm that pBQ molecule in PVDF GPE shows redox mediate behavior during charge-discharge process. Employing PVDF/pBQ GPE for LAB leads to an improved cycleability from 2 to over 30. In addition it results in a charge voltage decrease from around 4.2 V to around 3.3 V. The energy cycle efficiency (ECE) is improved about 15%. The pBQ accelerates to the formation of an amorphous phase on synthesized PVDF GPE matrix by acting inhibitor for polymerization. It leads to ionic conductivity improvement of synthesized GPE from 2.83 mScm-1 to 4.98 mScm-1.

AB - In this study, the poly-vinylidene fluoride (PVDF)/p-benzoquinone (pBQ) gel polymer electrolyte (GPE) is synthesized well with LiTFSI/TEGDME for Li-Air battery (LAB) applications. The PVDF/pBQ GPEs are characterized by electrochemical analysis and compared to the PVDF GPE. We confirm that pBQ molecule in PVDF GPE shows redox mediate behavior during charge-discharge process. Employing PVDF/pBQ GPE for LAB leads to an improved cycleability from 2 to over 30. In addition it results in a charge voltage decrease from around 4.2 V to around 3.3 V. The energy cycle efficiency (ECE) is improved about 15%. The pBQ accelerates to the formation of an amorphous phase on synthesized PVDF GPE matrix by acting inhibitor for polymerization. It leads to ionic conductivity improvement of synthesized GPE from 2.83 mScm-1 to 4.98 mScm-1.

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