Film properties of electropolymerized polypyrrole for a sulfur/ketjenblack cathode in lithium secondary batteries

研究成果: Article

7 引用 (Scopus)

抄録

A novel polypyrrole (PPy) film was investigated to determine the optimal conditions for operation in a Li/S battery. The PPy film was prepared by oxidative electropolymerization to improve the Li/S battery performance, as reported in our previous paper. In such a system, the PPy film was coated directly on the S/Ketjenblack cathode to solve the problem of polysulfide dissolution. The optimum PPy film preparation conditions to prevent polysulfide dissolution and to promote Li+ permeability were determined by varying the PPy polymerization bath composition and polymerization potential. As a result, the inclusion of 1.0 M lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in the polymerization bath (0.1 M pyrrole in 1-methyl-1-butylpyrrolidinium bis(trifluoromethanesulfonyl)imide) was found to be the most important factor for producing a PPy film with a high Li+ transport number (tLi+ ≈ 1). A polymerization potential of 4.5 V versus Li/Li+ was shown to be optimum for the promotion of Li+ permeability. The mechanism by which the PPy film prevents polysulfide dissolution and increases Li+ permeability is discussed by analyzing the SEM, CV, XPS, and 13C solid-state NMR data.

元の言語English
ページ(範囲)A683-A689
ジャーナルJournal of the Electrochemical Society
163
発行部数5
DOI
出版物ステータスPublished - 2016 1 1

Fingerprint

storage batteries
Secondary batteries
lithium batteries
polypyrroles
Polypyrroles
Lithium
Sulfur
Cathodes
sulfur
cathodes
polysulfides
Polysulfides
polymerization
Polymerization
permeability
dissolving
Dissolution
imides
electric batteries
baths

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

これを引用

@article{91ed4c61c96c4b2aa961f7ff619646fb,
title = "Film properties of electropolymerized polypyrrole for a sulfur/ketjenblack cathode in lithium secondary batteries",
abstract = "A novel polypyrrole (PPy) film was investigated to determine the optimal conditions for operation in a Li/S battery. The PPy film was prepared by oxidative electropolymerization to improve the Li/S battery performance, as reported in our previous paper. In such a system, the PPy film was coated directly on the S/Ketjenblack cathode to solve the problem of polysulfide dissolution. The optimum PPy film preparation conditions to prevent polysulfide dissolution and to promote Li+ permeability were determined by varying the PPy polymerization bath composition and polymerization potential. As a result, the inclusion of 1.0 M lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in the polymerization bath (0.1 M pyrrole in 1-methyl-1-butylpyrrolidinium bis(trifluoromethanesulfonyl)imide) was found to be the most important factor for producing a PPy film with a high Li+ transport number (tLi+ ≈ 1). A polymerization potential of 4.5 V versus Li/Li+ was shown to be optimum for the promotion of Li+ permeability. The mechanism by which the PPy film prevents polysulfide dissolution and increases Li+ permeability is discussed by analyzing the SEM, CV, XPS, and 13C solid-state NMR data.",
author = "Natsuki Nakamura and Yunwen Wu and Tokihiko Yokoshima and Hiroki Nara and Toshiyuki Momma and Tetsuya Osaka",
year = "2016",
month = "1",
day = "1",
doi = "10.1149/2.0731605jes",
language = "English",
volume = "163",
pages = "A683--A689",
journal = "Journal of the Electrochemical Society",
issn = "0013-4651",
publisher = "Electrochemical Society, Inc.",
number = "5",

}

TY - JOUR

T1 - Film properties of electropolymerized polypyrrole for a sulfur/ketjenblack cathode in lithium secondary batteries

AU - Nakamura, Natsuki

AU - Wu, Yunwen

AU - Yokoshima, Tokihiko

AU - Nara, Hiroki

AU - Momma, Toshiyuki

AU - Osaka, Tetsuya

PY - 2016/1/1

Y1 - 2016/1/1

N2 - A novel polypyrrole (PPy) film was investigated to determine the optimal conditions for operation in a Li/S battery. The PPy film was prepared by oxidative electropolymerization to improve the Li/S battery performance, as reported in our previous paper. In such a system, the PPy film was coated directly on the S/Ketjenblack cathode to solve the problem of polysulfide dissolution. The optimum PPy film preparation conditions to prevent polysulfide dissolution and to promote Li+ permeability were determined by varying the PPy polymerization bath composition and polymerization potential. As a result, the inclusion of 1.0 M lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in the polymerization bath (0.1 M pyrrole in 1-methyl-1-butylpyrrolidinium bis(trifluoromethanesulfonyl)imide) was found to be the most important factor for producing a PPy film with a high Li+ transport number (tLi+ ≈ 1). A polymerization potential of 4.5 V versus Li/Li+ was shown to be optimum for the promotion of Li+ permeability. The mechanism by which the PPy film prevents polysulfide dissolution and increases Li+ permeability is discussed by analyzing the SEM, CV, XPS, and 13C solid-state NMR data.

AB - A novel polypyrrole (PPy) film was investigated to determine the optimal conditions for operation in a Li/S battery. The PPy film was prepared by oxidative electropolymerization to improve the Li/S battery performance, as reported in our previous paper. In such a system, the PPy film was coated directly on the S/Ketjenblack cathode to solve the problem of polysulfide dissolution. The optimum PPy film preparation conditions to prevent polysulfide dissolution and to promote Li+ permeability were determined by varying the PPy polymerization bath composition and polymerization potential. As a result, the inclusion of 1.0 M lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in the polymerization bath (0.1 M pyrrole in 1-methyl-1-butylpyrrolidinium bis(trifluoromethanesulfonyl)imide) was found to be the most important factor for producing a PPy film with a high Li+ transport number (tLi+ ≈ 1). A polymerization potential of 4.5 V versus Li/Li+ was shown to be optimum for the promotion of Li+ permeability. The mechanism by which the PPy film prevents polysulfide dissolution and increases Li+ permeability is discussed by analyzing the SEM, CV, XPS, and 13C solid-state NMR data.

UR - http://www.scopus.com/inward/record.url?scp=85019465779&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85019465779&partnerID=8YFLogxK

U2 - 10.1149/2.0731605jes

DO - 10.1149/2.0731605jes

M3 - Article

AN - SCOPUS:85019465779

VL - 163

SP - A683-A689

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

IS - 5

ER -