Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 5, Issue 12, Pages 5905-5911Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta00328e
Keywords
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Funding
- National Nature Science Foundation of China [21403196, 51572240, 51677170]
- Natural Science Foundation of Zhejiang Province [LY13E020002, LY15B030003, LY16E070004, LY17E020010]
- Science and Technology Department of Zhejiang Province [2016C33009, 2016C31012]
- Ford University Research Program
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We report a novel synthesis of a mesoporous carbon-sulfur composite (MCSC) by electrodeposition of sulfur into the mesopores via a self-limiting process. With the merits of a high sulfur content (77%), uniform distribution and strong C-S bonds achieved by this method, the as-prepared materials demonstrate excellent performance in lithium-sulfur batteries. The electrode delivers high specific capacities at various C-rates (e. g. about 1160 and 590 mA h g(-1) at current densities of 0.1 and 2.0 A g(-1), respectively) and remarkable capacity retention, remaining above 857 mA h g(-1) after 200 cycles at a high rate of 0.5 A g(-1). This electrochemical strategy is industrially viable and scalable, and thus may pave a new way to push the commercialization of Li-S batteries.
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