Porous spherical polyacrylonitrile-carbon nanocomposite with high loading of sulfur for lithium-sulfur batteries

Hiesang Sohn; Mikhail L. Gordin; Michael Regula; Dong Hyeon Kim; Yoon Seok Jung; Jiangxuan Song; Donghai Wang

doi:10.1016/j.jpowsour.2015.10.013

Porous spherical polyacrylonitrile-carbon nanocomposite with high loading of sulfur for lithium-sulfur batteries

Hiesang Sohn
, Mikhail L. Gordin
, Michael Regula
, Dong Hyeon Kim
, Yoon Seok Jung
, Jiangxuan Song
, Donghai Wang

Pennsylvania State University
Ulsan National Institute of Science and Technology

科研成果: 期刊稿件 › 文章 › 同行评审

93 引用（Scopus）

摘要

Pyrolyzed porous spherical composites of polyacrylonitrile-Ketjenblack carbon and sulfur (pPAN-KB/S) with a high sulfur content (ca. 72%) and enhanced conductivity and porosity (pore volume: 1.42 cm³/g; BET surface area: 727 m²/g) were prepared by an aerosol-assisted process and applied as cathode for lithium-sulfur batteries. Electrochemical tests showed that the pPAN-KB/S composite exhibited a high capacity of 866 mAh/g (based on sulfur) after 100 cycles at 0.5C (1C = 1.68 A/g) and a good rate performance at high current density (431 mAh/g at 5C). In addition, a pPAN-KB/S composite electrode with high sulfur loading (ca. 4.4 mg-S/cm²) exhibited impressive electrochemical performance with a reversible capacity of 513 mAh/g and 576 mAh/cm³ (based on sulfur) and a coulombic efficiency >99% after 100 cycles at 0.5C.

源语言	英语
文章编号	21796
页（从-至）	70-78
页数	9
期刊	Journal of Power Sources
卷	302
DOI	https://doi.org/10.1016/j.jpowsour.2015.10.013
出版状态	已出版 - 20 1月 2016
已对外发布	是

联合国可持续发展目标

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可持续发展目标 7 经济适用的清洁能源

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@article{93217a49277048dab56eb8b91e232fd6,

title = "Porous spherical polyacrylonitrile-carbon nanocomposite with high loading of sulfur for lithium-sulfur batteries",

abstract = "Pyrolyzed porous spherical composites of polyacrylonitrile-Ketjenblack carbon and sulfur (pPAN-KB/S) with a high sulfur content (ca. 72\%) and enhanced conductivity and porosity (pore volume: 1.42 cm3/g; BET surface area: 727 m2/g) were prepared by an aerosol-assisted process and applied as cathode for lithium-sulfur batteries. Electrochemical tests showed that the pPAN-KB/S composite exhibited a high capacity of 866 mAh/g (based on sulfur) after 100 cycles at 0.5C (1C = 1.68 A/g) and a good rate performance at high current density (431 mAh/g at 5C). In addition, a pPAN-KB/S composite electrode with high sulfur loading (ca. 4.4 mg-S/cm2) exhibited impressive electrochemical performance with a reversible capacity of 513 mAh/g and 576 mAh/cm3 (based on sulfur) and a coulombic efficiency >99\% after 100 cycles at 0.5C.",

keywords = "Aerosol process, Chemical functionality, Conductivity, Li-S batteries, Porosity",

author = "Hiesang Sohn and Gordin, \{Mikhail L.\} and Michael Regula and Kim, \{Dong Hyeon\} and Jung, \{Yoon Seok\} and Jiangxuan Song and Donghai Wang",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2016",

month = jan,

day = "20",

doi = "10.1016/j.jpowsour.2015.10.013",

language = "英语",

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T1 - Porous spherical polyacrylonitrile-carbon nanocomposite with high loading of sulfur for lithium-sulfur batteries

AU - Sohn, Hiesang

AU - Gordin, Mikhail L.

AU - Regula, Michael

AU - Kim, Dong Hyeon

AU - Jung, Yoon Seok

AU - Song, Jiangxuan

AU - Wang, Donghai

PY - 2016/1/20

Y1 - 2016/1/20

N2 - Pyrolyzed porous spherical composites of polyacrylonitrile-Ketjenblack carbon and sulfur (pPAN-KB/S) with a high sulfur content (ca. 72%) and enhanced conductivity and porosity (pore volume: 1.42 cm3/g; BET surface area: 727 m2/g) were prepared by an aerosol-assisted process and applied as cathode for lithium-sulfur batteries. Electrochemical tests showed that the pPAN-KB/S composite exhibited a high capacity of 866 mAh/g (based on sulfur) after 100 cycles at 0.5C (1C = 1.68 A/g) and a good rate performance at high current density (431 mAh/g at 5C). In addition, a pPAN-KB/S composite electrode with high sulfur loading (ca. 4.4 mg-S/cm2) exhibited impressive electrochemical performance with a reversible capacity of 513 mAh/g and 576 mAh/cm3 (based on sulfur) and a coulombic efficiency >99% after 100 cycles at 0.5C.

AB - Pyrolyzed porous spherical composites of polyacrylonitrile-Ketjenblack carbon and sulfur (pPAN-KB/S) with a high sulfur content (ca. 72%) and enhanced conductivity and porosity (pore volume: 1.42 cm3/g; BET surface area: 727 m2/g) were prepared by an aerosol-assisted process and applied as cathode for lithium-sulfur batteries. Electrochemical tests showed that the pPAN-KB/S composite exhibited a high capacity of 866 mAh/g (based on sulfur) after 100 cycles at 0.5C (1C = 1.68 A/g) and a good rate performance at high current density (431 mAh/g at 5C). In addition, a pPAN-KB/S composite electrode with high sulfur loading (ca. 4.4 mg-S/cm2) exhibited impressive electrochemical performance with a reversible capacity of 513 mAh/g and 576 mAh/cm3 (based on sulfur) and a coulombic efficiency >99% after 100 cycles at 0.5C.

KW - Aerosol process

KW - Chemical functionality

KW - Conductivity

KW - Li-S batteries

KW - Porosity

UR - https://www.scopus.com/pages/publications/84944937711

U2 - 10.1016/j.jpowsour.2015.10.013

DO - 10.1016/j.jpowsour.2015.10.013

M3 - 文章

AN - SCOPUS:84944937711

SN - 0378-7753

VL - 302

SP - 70

EP - 78

JO - Journal of Power Sources

JF - Journal of Power Sources

M1 - 21796

ER -

Porous spherical polyacrylonitrile-carbon nanocomposite with high loading of sulfur for lithium-sulfur batteries

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