Infiltrating sulfur into a highly porous carbon sphere as cathode material for lithium–sulfur batteries

Journal Article · Wed Oct 15 00:00:00 EDT 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.03.020· OSTI ID:22420594

Zhao, Xiaohui; Kim, Dul-Sun ^[1]; Ahn, Hyo-Jun; Kim, Ki-Won ^[2]; Cho, Kwon-Koo ^[2]; Ahn, Jou-Hyeon ^[1]

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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)

Highlights: • A highly porous carbon (HPC) with regular spherical morphology was synthesized. • Sulfur/HPC composites were prepared by melt–diffusion method. • Sulfur/HPC composites showed improved cyclablity and long-term cycle life. - Abstract: Sulfur composite material with a highly porous carbon sphere as the conducting container was prepared. The highly porous carbon sphere was easily synthesized with resorcinol–formaldehyde precursor as the carbon source. The morphology of the carbon was observed with field emission scanning electron microscope and transmission electron microscope, which showed a well-defined spherical shape. Brunauer–Emmett–Teller analysis indicated that it possesses a high specific surface area of 1563 m{sup 2} g{sup −1} and a total pore volume of 2.66 cm{sup 3} g{sup −1} with a bimodal pore size distribution, which allow high sulfur loading and easy transportation of lithium ions. Sulfur carbon composites with varied sulfur contents were prepared by melt–diffusion method and lithium sulfur cells with the sulfur composites showed improved cyclablity and long-term cycle life.

• OSTI ID: 22420594
• Journal Information: Materials Research Bulletin, Vol. 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); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON
COMPOSITE MATERIALS
DIFFUSION
ELECTROCHEMISTRY
FIELD EMISSION
FORMALDEHYDE
LITHIUM
LITHIUM IONS
MORPHOLOGY
POROUS MATERIALS
RESORCINOL
SCANNING ELECTRON MICROSCOPY
SPHERICAL CONFIGURATION
SULFUR
SULFUR CONTENT
SYNTHESIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSMISSION ELECTRON MICROSCOPY