Feasibility of an interpenetrated polymer network system made of Di-block copolymer composed of polyethylene oxide and polystyrene as the gel electrolyte for lithium secondary batteries

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6 Citations (Scopus)

Abstract

The feasibility of a di-block copolymer, composed of a polyethylene oxide (PEO) chain and a polystyrene (PS) chain covalently bonded, as the gel electrolyte for lithium secondary batteries was investigated. The PEO-PS di-block copolymer gel electrolyte showed a high ionic conductivity of∼ 1 mS/cm at room temperature. Moreover, it retained good mechanical strength within a co-continuous phase separated structure, and it suppressed the dendritic deposition of Li. Indications were that the interface between the electrolyte and the Li metal was chemically stable, as a result of the PEO phase fixed to PS by covalent bonding. In addition, it was indicated that the Li/PEO-PS di-block copolymer gel electrolyte/LiFeP04 cell had a high charge-discharge efficiency of∼99% during 30 cycles, while maintaining a discharge capacity of 124 mAh/g.

Original languageEnglish
Pages (from-to)276-281
Number of pages6
JournalElectrochemistry
Volume76
Issue number4
Publication statusPublished - 2008 Apr

Fingerprint

Secondary batteries
Polystyrenes
Polyethylene oxides
Lithium
Electrolytes
Block copolymers
Polymers
Gels
Ionic conductivity
Phase structure
Strength of materials
Metals
Temperature

Keywords

  • Block copolymer
  • Gel electrolyte
  • Lithium secondary battery
  • Polyethylene oxide
  • Polystyrene

ASJC Scopus subject areas

  • Electrochemistry

Cite this

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title = "Feasibility of an interpenetrated polymer network system made of Di-block copolymer composed of polyethylene oxide and polystyrene as the gel electrolyte for lithium secondary batteries",
abstract = "The feasibility of a di-block copolymer, composed of a polyethylene oxide (PEO) chain and a polystyrene (PS) chain covalently bonded, as the gel electrolyte for lithium secondary batteries was investigated. The PEO-PS di-block copolymer gel electrolyte showed a high ionic conductivity of∼ 1 mS/cm at room temperature. Moreover, it retained good mechanical strength within a co-continuous phase separated structure, and it suppressed the dendritic deposition of Li. Indications were that the interface between the electrolyte and the Li metal was chemically stable, as a result of the PEO phase fixed to PS by covalent bonding. In addition, it was indicated that the Li/PEO-PS di-block copolymer gel electrolyte/LiFeP04 cell had a high charge-discharge efficiency of∼99{\%} during 30 cycles, while maintaining a discharge capacity of 124 mAh/g.",
keywords = "Block copolymer, Gel electrolyte, Lithium secondary battery, Polyethylene oxide, Polystyrene",
author = "Hiroki Nara and Toshiyuki Momma and Tetsuya Osaka",
year = "2008",
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language = "English",
volume = "76",
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journal = "Electrochemistry",
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publisher = "Electrochemical Society of Japan",
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TY - JOUR

T1 - Feasibility of an interpenetrated polymer network system made of Di-block copolymer composed of polyethylene oxide and polystyrene as the gel electrolyte for lithium secondary batteries

AU - Nara, Hiroki

AU - Momma, Toshiyuki

AU - Osaka, Tetsuya

PY - 2008/4

Y1 - 2008/4

N2 - The feasibility of a di-block copolymer, composed of a polyethylene oxide (PEO) chain and a polystyrene (PS) chain covalently bonded, as the gel electrolyte for lithium secondary batteries was investigated. The PEO-PS di-block copolymer gel electrolyte showed a high ionic conductivity of∼ 1 mS/cm at room temperature. Moreover, it retained good mechanical strength within a co-continuous phase separated structure, and it suppressed the dendritic deposition of Li. Indications were that the interface between the electrolyte and the Li metal was chemically stable, as a result of the PEO phase fixed to PS by covalent bonding. In addition, it was indicated that the Li/PEO-PS di-block copolymer gel electrolyte/LiFeP04 cell had a high charge-discharge efficiency of∼99% during 30 cycles, while maintaining a discharge capacity of 124 mAh/g.

AB - The feasibility of a di-block copolymer, composed of a polyethylene oxide (PEO) chain and a polystyrene (PS) chain covalently bonded, as the gel electrolyte for lithium secondary batteries was investigated. The PEO-PS di-block copolymer gel electrolyte showed a high ionic conductivity of∼ 1 mS/cm at room temperature. Moreover, it retained good mechanical strength within a co-continuous phase separated structure, and it suppressed the dendritic deposition of Li. Indications were that the interface between the electrolyte and the Li metal was chemically stable, as a result of the PEO phase fixed to PS by covalent bonding. In addition, it was indicated that the Li/PEO-PS di-block copolymer gel electrolyte/LiFeP04 cell had a high charge-discharge efficiency of∼99% during 30 cycles, while maintaining a discharge capacity of 124 mAh/g.

KW - Block copolymer

KW - Gel electrolyte

KW - Lithium secondary battery

KW - Polyethylene oxide

KW - Polystyrene

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M3 - Article

VL - 76

SP - 276

EP - 281

JO - Electrochemistry

JF - Electrochemistry

SN - 1344-3542

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