Micro-scale Li2S-C composite preparation from Li2SO4 for cathode of lithium ion battery

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

doi:10.1016/j.electacta.2015.07.116

Micro-scale Li₂S-C composite preparation from Li₂SO₄ for cathode of lithium ion battery

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

^*この研究の対応する著者

研究成果: Article › 査読

22 被引用数 (Scopus)

抄録

A facile and scalable method is proposed to prepare microscale Li₂S-C composite from Li₂SO₄ through carbon-thermal reduction, followed by a carbon coating process. Multi-solvent recrystallization was utilized to reduce the particle size of Li₂SO₄ to 2 μm. This fine-grain Li₂SO₄ helps to shorten the particle size of reduction product from 10 μm to 3 μm. Using fine Li₂SO₄ also brings the benefit of greatly reducing the over potential during the initial charge process and increasing the kinetics for Li₂S materials. Finally, the microscale Li₂S-C composite prepared from fine Li₂SO₄ enables a stable capacity of 350 mAh g^-1 at 0.2 C, higher than that obtained using a cathode prepared from commercial Li₂SO₄.

本文言語	English
ページ（範囲）	70-77
ページ数	8
ジャーナル	Electrochimica Acta
巻	183
DOI	https://doi.org/10.1016/j.electacta.2015.07.116
出版ステータス	Published - 2015 11月 20

ASJC Scopus subject areas

化学工学（全般）
電気化学

UN SDG

この成果は、次の持続可能な開発目標に貢献しています

文献へのアクセス

10.1016/j.electacta.2015.07.116

他のファイルとリンク

引用スタイル

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title = "Micro-scale Li2S-C composite preparation from Li2SO4 for cathode of lithium ion battery",

abstract = "A facile and scalable method is proposed to prepare microscale Li2S-C composite from Li2SO4 through carbon-thermal reduction, followed by a carbon coating process. Multi-solvent recrystallization was utilized to reduce the particle size of Li2SO4 to 2 μm. This fine-grain Li2SO4 helps to shorten the particle size of reduction product from 10 μm to 3 μm. Using fine Li2SO4 also brings the benefit of greatly reducing the over potential during the initial charge process and increasing the kinetics for Li2S materials. Finally, the microscale Li2S-C composite prepared from fine Li2SO4 enables a stable capacity of 350 mAh g-1 at 0.2 C, higher than that obtained using a cathode prepared from commercial Li2SO4.",

keywords = "LiS-C, LiSO, carbon-thermal reduction, lithium sulfide",

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) , Special Priority Research Area “Next-generation Rechargeable Battery”. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd. All rights reserved.",

year = "2015",

month = nov,

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doi = "10.1016/j.electacta.2015.07.116",

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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) , Special Priority Research Area “Next-generation Rechargeable Battery”. Publisher Copyright: © 2015 Elsevier Ltd. All rights reserved.

PY - 2015/11/20

Y1 - 2015/11/20

N2 - A facile and scalable method is proposed to prepare microscale Li2S-C composite from Li2SO4 through carbon-thermal reduction, followed by a carbon coating process. Multi-solvent recrystallization was utilized to reduce the particle size of Li2SO4 to 2 μm. This fine-grain Li2SO4 helps to shorten the particle size of reduction product from 10 μm to 3 μm. Using fine Li2SO4 also brings the benefit of greatly reducing the over potential during the initial charge process and increasing the kinetics for Li2S materials. Finally, the microscale Li2S-C composite prepared from fine Li2SO4 enables a stable capacity of 350 mAh g-1 at 0.2 C, higher than that obtained using a cathode prepared from commercial Li2SO4.

AB - A facile and scalable method is proposed to prepare microscale Li2S-C composite from Li2SO4 through carbon-thermal reduction, followed by a carbon coating process. Multi-solvent recrystallization was utilized to reduce the particle size of Li2SO4 to 2 μm. This fine-grain Li2SO4 helps to shorten the particle size of reduction product from 10 μm to 3 μm. Using fine Li2SO4 also brings the benefit of greatly reducing the over potential during the initial charge process and increasing the kinetics for Li2S materials. Finally, the microscale Li2S-C composite prepared from fine Li2SO4 enables a stable capacity of 350 mAh g-1 at 0.2 C, higher than that obtained using a cathode prepared from commercial Li2SO4.

KW - LiS-C

KW - LiSO

KW - carbon-thermal reduction

KW - lithium sulfide

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JO - Electrochimica Acta

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