Li2S cathode modified with polyvinylpyrrolidone and mechanical milling with carbon

Jun Liu; Hiroki Nara; Tokihiko Yokoshima; Toshiyuki Momma; Tetsuya Osaka

doi:10.1016/j.jpowsour.2014.09.179

Li₂S cathode modified with polyvinylpyrrolidone and mechanical milling with carbon

Jun Liu, Hiroki Nara, Tokihiko Yokoshima, Toshiyuki Momma, Tetsuya Osaka^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

Polyvinylpyrrolidone (PVP) is used with polyethylene oxide (PEO) as a mixed binder for mechanically milled Li₂S. PVP demonstrates its advantage in terms of increasing the capacity of Li₂S, but boosts the potential barrier at the beginning of the first charge. It is also revealed that PVP retards the charge-transfer kinetics of Li₂S. In Li₂S-C prepared by mechanical milling, carbon compensates for the electrochemical insulation of the PVP binder and improves the cycle stability. As a result, the Li₂S-C-PVP electrode with 60 wt% Li₂S content displays a low potential barrier at the onset of charge and a stable capacity of about 460 mAh g^-1 at 0.1 C.

Original language	English
Pages (from-to)	1136-1141
Number of pages	6
Journal	Journal of Power Sources
Volume	273
DOIs	https://doi.org/10.1016/j.jpowsour.2014.09.179
Publication status	Published - 2015 Jan 1

Keywords

LiS-C
Lithium sulfide
Mixed binder
Polyethylene oxide (PEO)
Polyvinylpyrrolidone (PVP)

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2014.09.179

Cite this

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title = "Li2S cathode modified with polyvinylpyrrolidone and mechanical milling with carbon",

abstract = "Polyvinylpyrrolidone (PVP) is used with polyethylene oxide (PEO) as a mixed binder for mechanically milled Li2S. PVP demonstrates its advantage in terms of increasing the capacity of Li2S, but boosts the potential barrier at the beginning of the first charge. It is also revealed that PVP retards the charge-transfer kinetics of Li2S. In Li2S-C prepared by mechanical milling, carbon compensates for the electrochemical insulation of the PVP binder and improves the cycle stability. As a result, the Li2S-C-PVP electrode with 60 wt% Li2S content displays a low potential barrier at the onset of charge and a stable capacity of about 460 mAh g-1 at 0.1 C.",

keywords = "LiS-C, Lithium sulfide, Mixed binder, Polyethylene oxide (PEO), Polyvinylpyrrolidone (PVP)",

author = "Jun Liu and Hiroki Nara and Tokihiko Yokoshima and Toshiyuki Momma and Tetsuya Osaka",

note = "Funding Information: This work was supported partially by Advanced Low Carbon Technology Research and Development Program ( JST-ALCA ), Specially Promoted Research for Innovative Next Generation Batteries, and by the Grants for Excellent Graduate Schools (Practical Chemical Wisdom), MEXT, Japan . Publisher Copyright: {\textcopyright} 2014 Elsevier B.V. All rights reserved.",

year = "2015",

month = jan,

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doi = "10.1016/j.jpowsour.2014.09.179",

language = "English",

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T1 - Li2S cathode modified with polyvinylpyrrolidone and mechanical milling with carbon

AU - Liu, Jun

AU - Nara, Hiroki

AU - Yokoshima, Tokihiko

AU - Momma, Toshiyuki

AU - Osaka, Tetsuya

N1 - Funding Information: This work was supported partially by Advanced Low Carbon Technology Research and Development Program ( JST-ALCA ), Specially Promoted Research for Innovative Next Generation Batteries, and by the Grants for Excellent Graduate Schools (Practical Chemical Wisdom), MEXT, Japan . Publisher Copyright: © 2014 Elsevier B.V. All rights reserved.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Polyvinylpyrrolidone (PVP) is used with polyethylene oxide (PEO) as a mixed binder for mechanically milled Li2S. PVP demonstrates its advantage in terms of increasing the capacity of Li2S, but boosts the potential barrier at the beginning of the first charge. It is also revealed that PVP retards the charge-transfer kinetics of Li2S. In Li2S-C prepared by mechanical milling, carbon compensates for the electrochemical insulation of the PVP binder and improves the cycle stability. As a result, the Li2S-C-PVP electrode with 60 wt% Li2S content displays a low potential barrier at the onset of charge and a stable capacity of about 460 mAh g-1 at 0.1 C.

AB - Polyvinylpyrrolidone (PVP) is used with polyethylene oxide (PEO) as a mixed binder for mechanically milled Li2S. PVP demonstrates its advantage in terms of increasing the capacity of Li2S, but boosts the potential barrier at the beginning of the first charge. It is also revealed that PVP retards the charge-transfer kinetics of Li2S. In Li2S-C prepared by mechanical milling, carbon compensates for the electrochemical insulation of the PVP binder and improves the cycle stability. As a result, the Li2S-C-PVP electrode with 60 wt% Li2S content displays a low potential barrier at the onset of charge and a stable capacity of about 460 mAh g-1 at 0.1 C.

KW - LiS-C

KW - Lithium sulfide

KW - Mixed binder

KW - Polyethylene oxide (PEO)

KW - Polyvinylpyrrolidone (PVP)

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