A novel sulfur-coated multi-walled carbon nanotubes composite material (S-coated-MWCNTs) was prepared through capillarity between the sulfur and multi-walled carbon nanotubes. The results of the TEM and XRD measurements reveal that S-coated-MWCNTs have a typical core-shell structure, and the MWCNTs serve as the cores and are dispersed individually into the sulfur matrices. The charge-discharge experiments of the lithium/sulfur cells demonstrated that the S-coated-MWCNTs cathode could maintain a reversible capacity of 670 mAh g(-1) after 60 cycles, showing a greatly enhanced cycle ability as compared with the sulfur cathode with simple MWCNTs addition (S/MWCNTs) and the cathode using sulfur-coated carbon black composite (S-coated-CB). The EIS and SEM techniques were used to define and understand the impact of the rnicrostructure of the composite electrode on its electrochemical performance. Derived from these studies, the main key factors to the improvement in the cycle life of the sulfur cathode were discussed. (C) 2009 Published by Elsevier B.V.
机构:
Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Cheon, SE
Choi, SS
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Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Choi, SS
Han, JS
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Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Han, JS
Choi, YS
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Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Choi, YS
Jung, BH
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Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Jung, BH
Lim, HS
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Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
机构:
Gyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Jinju 660701, Gyeongnam, South KoreaGyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Jinju 660701, Gyeongnam, South Korea
Choi, Young-Jin
Kim, Ki-Won
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Gyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Jinju 660701, Gyeongnam, South KoreaGyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Jinju 660701, Gyeongnam, South Korea
机构:
Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South KoreaKorea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Han, SC
Song, MS
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机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Song, MS
Lee, H
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机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Lee, H
Kim, HS
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机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Kim, HS
Ahn, HJ
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机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Ahn, HJ
Lee, JY
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机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
机构:
Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
He, Xiangming
Ren, Jianguo
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Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
Ren, Jianguo
Wang, Li
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Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
Wang, Li
Pu, Weihua
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Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
Pu, Weihua
Jiang, Changyin
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Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
Jiang, Changyin
Wan, Chunrong
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Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
机构:
Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Cheon, SE
Choi, SS
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h-index: 0
机构:
Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Choi, SS
Han, JS
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Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Han, JS
Choi, YS
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Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Choi, YS
Jung, BH
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Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
Jung, BH
Lim, HS
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Samsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South KoreaSamsung SDI Co Ltd, Ctr Corp Res & Dev, Yongin 449577, Gyeonggi Do, South Korea
机构:
Gyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Jinju 660701, Gyeongnam, South KoreaGyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Jinju 660701, Gyeongnam, South Korea
Choi, Young-Jin
Kim, Ki-Won
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Gyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Jinju 660701, Gyeongnam, South KoreaGyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Jinju 660701, Gyeongnam, South Korea
机构:
Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South KoreaKorea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Han, SC
Song, MS
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h-index: 0
机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Song, MS
Lee, H
论文数: 0引用数: 0
h-index: 0
机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Lee, H
Kim, HS
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机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Kim, HS
Ahn, HJ
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机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Ahn, HJ
Lee, JY
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h-index: 0
机构:Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
机构:
Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
He, Xiangming
Ren, Jianguo
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机构:
Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
Ren, Jianguo
Wang, Li
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Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
Wang, Li
Pu, Weihua
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Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
Pu, Weihua
Jiang, Changyin
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Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
Jiang, Changyin
Wan, Chunrong
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Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R ChinaTsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China