Dual-carbon battery using high concentration LiPF6 in dimethyl carbonate (DMC) electrolyte

Seiji Miyoshi; Hiroki Nagano; Taro Fukuda; Takuya Kurihara; Motonori Watanabe; Shintaro Ida; Tatsumi Ishihara

doi:10.1149/2.0381607jes

Dual-carbon battery using high concentration LiPF₆ in dimethyl carbonate (DMC) electrolyte

Seiji Miyoshi, Hiroki Nagano, Taro Fukuda, Takuya Kurihara, Motonori Watanabe, Shintaro Ida, Tatsumi Ishihara

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

111 Citations (Scopus)

Abstract

The effects of LiPF₆ concentration in ethylene carbonate (EC)-dimethyl carbonate (DMC) on PF₆^- intercalation into graphitic carbon were studied for a high-energy-density dual-carbon battery. The capacity as well as potential for PF₆^- intercalation decreased with increasing LiPF₆ concentration when EC-DMC was used as an electrolyte. Low-viscosity carbonate was found to be suitable as a high-concentration LiPF₆ electrolyte, and DMC is thus a promising electrolyte for high-concentration LiPF₆. The PF₆^- intercalation capacity as well as the intercalation potential in 3.7 M LiPF₆/DMC (100 mAh g^-1) were almost the same as those in 1 M LiPF₆/EC-DMC (89 mAh g^-1). Considering the anode capacity, 3.1 M LiPF₆ is suitable for the full cell. Using 3.1 M LiPF₆ in DMC, the energy density of the dual-carbon battery could be significantly increased.

Original language	English
Pages (from-to)	A1206-A1213
Journal	Journal of the Electrochemical Society
Volume	163
Issue number	7
DOIs	https://doi.org/10.1149/2.0381607jes
Publication status	Published - 2016

All Science Journal Classification (ASJC) codes

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

UN SDGs

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

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10.1149/2.0381607jes

Cite this

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title = "Dual-carbon battery using high concentration LiPF6 in dimethyl carbonate (DMC) electrolyte",

abstract = "The effects of LiPF6 concentration in ethylene carbonate (EC)-dimethyl carbonate (DMC) on PF6- intercalation into graphitic carbon were studied for a high-energy-density dual-carbon battery. The capacity as well as potential for PF6- intercalation decreased with increasing LiPF6 concentration when EC-DMC was used as an electrolyte. Low-viscosity carbonate was found to be suitable as a high-concentration LiPF6 electrolyte, and DMC is thus a promising electrolyte for high-concentration LiPF6. The PF6- intercalation capacity as well as the intercalation potential in 3.7 M LiPF6/DMC (100 mAh g-1) were almost the same as those in 1 M LiPF6/EC-DMC (89 mAh g-1). Considering the anode capacity, 3.1 M LiPF6 is suitable for the full cell. Using 3.1 M LiPF6 in DMC, the energy density of the dual-carbon battery could be significantly increased.",

author = "Seiji Miyoshi and Hiroki Nagano and Taro Fukuda and Takuya Kurihara and Motonori Watanabe and Shintaro Ida and Tatsumi Ishihara",

note = "Publisher Copyright: {\textcopyright} 2016 The Electrochemical Society.",

year = "2016",

doi = "10.1149/2.0381607jes",

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T1 - Dual-carbon battery using high concentration LiPF6 in dimethyl carbonate (DMC) electrolyte

AU - Miyoshi, Seiji

AU - Nagano, Hiroki

AU - Fukuda, Taro

AU - Kurihara, Takuya

AU - Watanabe, Motonori

AU - Ida, Shintaro

AU - Ishihara, Tatsumi

PY - 2016

Y1 - 2016

N2 - The effects of LiPF6 concentration in ethylene carbonate (EC)-dimethyl carbonate (DMC) on PF6- intercalation into graphitic carbon were studied for a high-energy-density dual-carbon battery. The capacity as well as potential for PF6- intercalation decreased with increasing LiPF6 concentration when EC-DMC was used as an electrolyte. Low-viscosity carbonate was found to be suitable as a high-concentration LiPF6 electrolyte, and DMC is thus a promising electrolyte for high-concentration LiPF6. The PF6- intercalation capacity as well as the intercalation potential in 3.7 M LiPF6/DMC (100 mAh g-1) were almost the same as those in 1 M LiPF6/EC-DMC (89 mAh g-1). Considering the anode capacity, 3.1 M LiPF6 is suitable for the full cell. Using 3.1 M LiPF6 in DMC, the energy density of the dual-carbon battery could be significantly increased.

AB - The effects of LiPF6 concentration in ethylene carbonate (EC)-dimethyl carbonate (DMC) on PF6- intercalation into graphitic carbon were studied for a high-energy-density dual-carbon battery. The capacity as well as potential for PF6- intercalation decreased with increasing LiPF6 concentration when EC-DMC was used as an electrolyte. Low-viscosity carbonate was found to be suitable as a high-concentration LiPF6 electrolyte, and DMC is thus a promising electrolyte for high-concentration LiPF6. The PF6- intercalation capacity as well as the intercalation potential in 3.7 M LiPF6/DMC (100 mAh g-1) were almost the same as those in 1 M LiPF6/EC-DMC (89 mAh g-1). Considering the anode capacity, 3.1 M LiPF6 is suitable for the full cell. Using 3.1 M LiPF6 in DMC, the energy density of the dual-carbon battery could be significantly increased.

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