Title:
METHOD FOR PREPARING CARBON NANOSTRUCTURE COMPRISING MOLYBDENUM DISULFIDE, LITHIUM SECONDARY BATTERY CATHODE COMPRISING CARBON NANOSTRUCTURE COMPRISING MOLYBDENUM DISULFIDE, PREPARED THEREBY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2020/045854
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing a carbon nanostructure comprising molybdenum disulfide and, more specifically, provides a method for preparing a carbon nanostructure having molybdenum disulfide located on the surface thereof, by melt-diffusing and heat treating a mixture of a molybdenum precursor, a carbon nanostructure and sulfur. In addition, the present invention relates to: a lithium secondary battery cathode comprising, as an additive, a carbon nanostructure comprising molybdenum disulfide; and a lithium secondary battery comprising same, and in the lithium secondary battery comprising the cathode in which the carbon nanostructure comprising molybdenum disulfide is applied, the carbon nanostructure comprising molybdenum disulfide adsorbs lithium polysulfide (LiPS) to be generated during charging/discharging of the lithium secondary battery, thereby increasing the charging/discharging efficiency of a battery and improving lifespan characteristics.
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Inventors:
YE SEONGJI (KR)
SOHN KWONNAM (KR)
SOHN KWONNAM (KR)
Application Number:
PCT/KR2019/010191
Publication Date:
March 05, 2020
Filing Date:
August 12, 2019
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/13; C01B32/178; C01G39/06; H01M4/36; H01M4/38; H01M4/58; H01M4/62; H01M10/052
Foreign References:
| CN104409703A | 2015-03-11 | |||
| CN104051735A | 2014-09-17 | |||
| KR20180102690A | 2018-09-17 | |||
| KR20180102699A | 2018-09-17 |
Other References:
REN, JUAN ET AL.: "Rational design of a multidimensional N-doped porous carbon/MoS2/CNT nano-architecture hybrid for high performance lithium-sulfur batteries", JOURNAL OF MATERIALS CHEMISTRY A., vol. 6, no. 28, 22 June 2018 (2018-06-22), pages 13835 - 13847, XP055695518, ISSN: 2050-7488, DOI: 10.1039/C8TA04675A
CHEN, LIANG ET AL.: "Chemical modification of pristine carbon nanotubes and their exploitation as the carbon hosts for lithium-sulfur batteries", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 41, no. 47, 21 December 2016 (2016-12-21), pages 21850 - 21860, XP055695523, ISSN: 0360-3199, DOI: 10.1016/j.ijhydene.2016.08.004
YAN, LINGJIAET ET AL.: "Enhanced performance of lithium-sulfur batteries with an ultrathin and lightweight MoS2/carbon nanotube interlayer", JOURNAL OF POWER SOURCES, vol. 389, 15 June 2018 (2018-06-15), pages 169 - 177, XP055695524, ISSN: 0378-7753, DOI: 10.1016/j.jpowsour.2018.04.015
CHEN, LIANG ET AL.: "Chemical modification of pristine carbon nanotubes and their exploitation as the carbon hosts for lithium-sulfur batteries", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 41, no. 47, 21 December 2016 (2016-12-21), pages 21850 - 21860, XP055695523, ISSN: 0360-3199, DOI: 10.1016/j.ijhydene.2016.08.004
YAN, LINGJIAET ET AL.: "Enhanced performance of lithium-sulfur batteries with an ultrathin and lightweight MoS2/carbon nanotube interlayer", JOURNAL OF POWER SOURCES, vol. 389, 15 June 2018 (2018-06-15), pages 169 - 177, XP055695524, ISSN: 0378-7753, DOI: 10.1016/j.jpowsour.2018.04.015
Attorney, Agent or Firm:
KIM, Sung Ho (KR)
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