Self-diffusion coefficients of lithium, anion, polymer, and solvent in polymer gel electrolytes measured using7Li, 19F, and1H pulsed-gradient spin-echo NMR

Kikuko Hayamizu; Yuichi Aihara; Shigemasa Arai; William S. Price

doi:10.1016/S0013-4686(99)00338-2

Self-diffusion coefficients of lithium, anion, polymer, and solvent in polymer gel electrolytes measured using⁷Li, ¹⁹F, and¹H pulsed-gradient spin-echo NMR

Kikuko Hayamizu, Yuichi Aihara, Shigemasa Arai, William S. Price

Research output: Contribution to journal › Conference article › peer-review

63 Citations (Scopus)

Abstract

Four series of solution and corresponding polymer gel electrolyte systems were studied. The systems were composed of a solvent (γ-butyrolactone (GBL) or propylene carbonate (PC)), (three different concentrations of) a lithium salt (LiBF₄ or lithium bis(trifluromethanesulfonyl)-imide (LiTFSI, LiN(SO₂CF₃)₂)), and poly(ethylene glycol diacrylate) of molecular weight 4000 (PEO), which was cross-linked to form the polymer gels. The self-diffusion coefficients of the lithium, the anions, the solvents and the polymer were obtained independently using ⁷Li, ¹⁹F and ¹H pulsed-gradient spin-echo NMR measurements. From the individual diffusion coefficients of each component of the GBL-LiBF₄, GBL-LiTFSI, PC-LiBF₄, and PC-LiTFSI solutions and the corresponding polymer gel electrolytes, the solvation and the solvent-dependent behaviour of the lithium and the anions are clearly shown. Especially in the gels, the lithium binding with the PEO matrix were found to be quite different depending on whether the solvent was PC or GBL.

Original language	English
Pages (from-to)	1313-1319
Number of pages	7
Journal	Electrochimica Acta
Volume	45
Issue number	8-9
DOIs	https://doi.org/10.1016/S0013-4686(99)00338-2
Publication status	Published - 3 Jan 2000
Externally published	Yes
Event	Proceedings of the 1998 6th International Symposium on Polymer Electrolytes (ISPE-6) - Hayama, Kanagawa, Japan Duration: 1 Nov 1998 → 6 Nov 1998

Keywords

Ion-association
PGSE NMR
Polymer electrolyte
Self-diffusion
Solvation

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title = "Self-diffusion coefficients of lithium, anion, polymer, and solvent in polymer gel electrolytes measured using7Li, 19F, and1H pulsed-gradient spin-echo NMR",

abstract = "Four series of solution and corresponding polymer gel electrolyte systems were studied. The systems were composed of a solvent (γ-butyrolactone (GBL) or propylene carbonate (PC)), (three different concentrations of) a lithium salt (LiBF4 or lithium bis(trifluromethanesulfonyl)-imide (LiTFSI, LiN(SO2CF3)2)), and poly(ethylene glycol diacrylate) of molecular weight 4000 (PEO), which was cross-linked to form the polymer gels. The self-diffusion coefficients of the lithium, the anions, the solvents and the polymer were obtained independently using 7Li, 19F and 1H pulsed-gradient spin-echo NMR measurements. From the individual diffusion coefficients of each component of the GBL-LiBF4, GBL-LiTFSI, PC-LiBF4, and PC-LiTFSI solutions and the corresponding polymer gel electrolytes, the solvation and the solvent-dependent behaviour of the lithium and the anions are clearly shown. Especially in the gels, the lithium binding with the PEO matrix were found to be quite different depending on whether the solvent was PC or GBL.",

keywords = "Ion-association, PGSE NMR, Polymer electrolyte, Self-diffusion, Solvation",

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T1 - Self-diffusion coefficients of lithium, anion, polymer, and solvent in polymer gel electrolytes measured using7Li, 19F, and1H pulsed-gradient spin-echo NMR

AU - Hayamizu, Kikuko

AU - Aihara, Yuichi

AU - Arai, Shigemasa

AU - Price, William S.

PY - 2000/1/3

Y1 - 2000/1/3

N2 - Four series of solution and corresponding polymer gel electrolyte systems were studied. The systems were composed of a solvent (γ-butyrolactone (GBL) or propylene carbonate (PC)), (three different concentrations of) a lithium salt (LiBF4 or lithium bis(trifluromethanesulfonyl)-imide (LiTFSI, LiN(SO2CF3)2)), and poly(ethylene glycol diacrylate) of molecular weight 4000 (PEO), which was cross-linked to form the polymer gels. The self-diffusion coefficients of the lithium, the anions, the solvents and the polymer were obtained independently using 7Li, 19F and 1H pulsed-gradient spin-echo NMR measurements. From the individual diffusion coefficients of each component of the GBL-LiBF4, GBL-LiTFSI, PC-LiBF4, and PC-LiTFSI solutions and the corresponding polymer gel electrolytes, the solvation and the solvent-dependent behaviour of the lithium and the anions are clearly shown. Especially in the gels, the lithium binding with the PEO matrix were found to be quite different depending on whether the solvent was PC or GBL.

AB - Four series of solution and corresponding polymer gel electrolyte systems were studied. The systems were composed of a solvent (γ-butyrolactone (GBL) or propylene carbonate (PC)), (three different concentrations of) a lithium salt (LiBF4 or lithium bis(trifluromethanesulfonyl)-imide (LiTFSI, LiN(SO2CF3)2)), and poly(ethylene glycol diacrylate) of molecular weight 4000 (PEO), which was cross-linked to form the polymer gels. The self-diffusion coefficients of the lithium, the anions, the solvents and the polymer were obtained independently using 7Li, 19F and 1H pulsed-gradient spin-echo NMR measurements. From the individual diffusion coefficients of each component of the GBL-LiBF4, GBL-LiTFSI, PC-LiBF4, and PC-LiTFSI solutions and the corresponding polymer gel electrolytes, the solvation and the solvent-dependent behaviour of the lithium and the anions are clearly shown. Especially in the gels, the lithium binding with the PEO matrix were found to be quite different depending on whether the solvent was PC or GBL.

KW - Ion-association

KW - PGSE NMR

KW - Polymer electrolyte

KW - Self-diffusion

KW - Solvation

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DO - 10.1016/S0013-4686(99)00338-2

M3 - Conference article

AN - SCOPUS:0033898299

SN - 0013-4686

VL - 45

SP - 1313

EP - 1319

JO - Electrochimica Acta

JF - Electrochimica Acta

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T2 - Proceedings of the 1998 6th International Symposium on Polymer Electrolytes (ISPE-6)

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ER -

Self-diffusion coefficients of lithium, anion, polymer, and solvent in polymer gel electrolytes measured using⁷Li, ¹⁹F, and¹H pulsed-gradient spin-echo NMR

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Keywords

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