Journal
ACS ENERGY LETTERS
Volume 1, Issue 2, Pages 431-437Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.6b00213
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Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-SC0005397]
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Magnesium-sulfur cells based on abundant, safe Mg and S are demonstrated with a cathode containing a preactivated carbon nanofiber (CNF) electrode matrix filled with sulfur active material and a CNF-coated separator. The CNF coating on the separator serves as a polysulfide trapper and an upper current collector for facilitating high sulfur utilization and enhancing the cycle life. Mechanisms regarding the performance enhancement and the charge-discharge processes of the Mg-S cells are investigated with spectroscopic, microscopic, and electrochemical analyses.
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