skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A mesoporous carbon–sulfur composite as cathode material for high rate lithium sulfur batteries

Abstract

Highlights: • CMK-3 mesoporous carbon was synthesized as conducting reservoir for housing sulfur. • Sulfur/CMK-3 composites were prepared by two-stage thermal treatment. • The composite at 300 °C for 20 h shows improved electrochemical properties. - Abstract: Sulfur composite was prepared by encapsulating sulfur into CMK-3 mesoporous carbon with different heating times and then used as the cathode material for lithium sulfur batteries. Thermal treatment at 300 °C plays an important role in the sulfur encapsulation process. With 20 h of heating time, a portion of sulfur remained on the surface of carbon, whereas with 60 h of heating time, sulfur is confined deeply in the small pores of carbon that cannot be fully exploited in the redox reaction, thus causing low capacity. The S/CMK-3 composite with thermal treatment for 40 h at 300 °C contained 51.3 wt.% sulfur and delivered a high initial capacity of 1375 mA h g{sup −1} at 0.1 C. Moreover, it showed good capacity retention of 704 mA h g{sup −1} at 0.1 C and 578 mA h g{sup −1} at 2 C even after 100 cycles, which proves its potential as a cathode material for high capability lithium sulfur batteries.

Authors:
; ;  [1]; ;  [2];  [2];  [1]
  1. Department of Chemical and Biological Engineering and Research Institute for Green Energy Convergence Technology, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701 (Korea, Republic of)
  2. Department of Materials Engineering and Convergence Technology, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22420593
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 58; Conference: IFFM2013: International forum on functional materials, Jeju City (Korea, Republic of), 27-29 Jun 2013; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CAPACITY; CARBON; CATHODES; ELECTROCHEMISTRY; ENCAPSULATION; ENERGY STORAGE; HEAT TREATMENTS; HEATING; LITHIUM-SULFUR BATTERIES; NANOSTRUCTURES; POTENTIALS; REDOX REACTIONS; RETENTION; SULFUR; SURFACES; SYNTHESIS

Citation Formats

Choi, Hyunji, Zhao, Xiaohui, Kim, Dul-Sun, Ahn, Hyo-Jun, Kim, Ki-Won, Cho, Kwon-Koo, Ahn, Jou-Hyeon, and Department of Materials Engineering and Convergence Technology, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701. A mesoporous carbon–sulfur composite as cathode material for high rate lithium sulfur batteries. United States: N. p., 2014. Web. doi:10.1016/J.MATERRESBULL.2014.03.023.
Choi, Hyunji, Zhao, Xiaohui, Kim, Dul-Sun, Ahn, Hyo-Jun, Kim, Ki-Won, Cho, Kwon-Koo, Ahn, Jou-Hyeon, & Department of Materials Engineering and Convergence Technology, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701. A mesoporous carbon–sulfur composite as cathode material for high rate lithium sulfur batteries. United States. doi:10.1016/J.MATERRESBULL.2014.03.023.
Choi, Hyunji, Zhao, Xiaohui, Kim, Dul-Sun, Ahn, Hyo-Jun, Kim, Ki-Won, Cho, Kwon-Koo, Ahn, Jou-Hyeon, and Department of Materials Engineering and Convergence Technology, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701. Wed . "A mesoporous carbon–sulfur composite as cathode material for high rate lithium sulfur batteries". United States. doi:10.1016/J.MATERRESBULL.2014.03.023.
@article{osti_22420593,
title = {A mesoporous carbon–sulfur composite as cathode material for high rate lithium sulfur batteries},
author = {Choi, Hyunji and Zhao, Xiaohui and Kim, Dul-Sun and Ahn, Hyo-Jun and Kim, Ki-Won and Cho, Kwon-Koo and Ahn, Jou-Hyeon and Department of Materials Engineering and Convergence Technology, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701},
abstractNote = {Highlights: • CMK-3 mesoporous carbon was synthesized as conducting reservoir for housing sulfur. • Sulfur/CMK-3 composites were prepared by two-stage thermal treatment. • The composite at 300 °C for 20 h shows improved electrochemical properties. - Abstract: Sulfur composite was prepared by encapsulating sulfur into CMK-3 mesoporous carbon with different heating times and then used as the cathode material for lithium sulfur batteries. Thermal treatment at 300 °C plays an important role in the sulfur encapsulation process. With 20 h of heating time, a portion of sulfur remained on the surface of carbon, whereas with 60 h of heating time, sulfur is confined deeply in the small pores of carbon that cannot be fully exploited in the redox reaction, thus causing low capacity. The S/CMK-3 composite with thermal treatment for 40 h at 300 °C contained 51.3 wt.% sulfur and delivered a high initial capacity of 1375 mA h g{sup −1} at 0.1 C. Moreover, it showed good capacity retention of 704 mA h g{sup −1} at 0.1 C and 578 mA h g{sup −1} at 2 C even after 100 cycles, which proves its potential as a cathode material for high capability lithium sulfur batteries.},
doi = {10.1016/J.MATERRESBULL.2014.03.023},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 58,
place = {United States},
year = {2014},
month = {10}
}