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Author Park, Jin-Woo ♦ Kim, Changhyeon ♦ Ryu, Ho-Suk ♦ Cho, Gyu-Bong ♦ Cho, Kwon-Koo ♦ Kim, Ki-Won ♦ Ahn, Jou-Hyeon ♦ Wang, Guoxiu ♦ Ahn, Jae-Pyeung ♦ Ahn, Hyo-Jun
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ ACTIVATED CARBON ♦ CAPACITY ♦ CARBON ♦ ELECTROCHEMISTRY ♦ ELECTRODES ♦ ENERGY STORAGE ♦ LITHIUM-SULFUR BATTERIES ♦ PERFORMANCE ♦ SULFUR ♦ SULFUR CONTENT ♦ SURFACES ♦ SYNTHESIS
Abstract Highlights: • The content of sulfur in activated carbon was controlled by solution process. • The sulfur electrode with low sulfur content shows the best performance. • The Li/S battery has capacity of 1360 mAh/g at 1 C and 702 mAh/g at 10 C. - Abstract: The content of sulfur in sulfur/activated carbon composite is controlled from 32.37 wt.% to 55.33 wt.% by a one-step solution-based process. When the sulfur content is limited to 41.21 wt.%, it can be loaded into the pores of an activated carbon matrix in a highly dispersed state. On the contrary, when the sulfur content is 55.33 wt.%, crystalline sulfur can be detected on the surface of the activated carbon matrix. The best electrochemical performance can be obtained for a sulfur electrode with the lowest sulfur content. The sulfur/activated carbon composite with 32.37 wt.% sulfur afforded the highest first discharge capacity of 1360 mAh g{sup −1} at 1 C rate and a large reversible capacity of 702 mAh g{sup −1} at 10 C (16.75 A/g)
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-09-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 69


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