Journal
RSC ADVANCES
Volume 5, Issue 50, Pages 40310-40315Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra03685b
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Funding
- National Natural Science Foundation of China [51271012]
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Nano-sulfur anchored on flat graphene (Nano-S/FG) was achieved by a facile hydrothermal method as high performance cathode materials for lithium-sulfur battery. The obtained Nano-S/FG shows flat morphologies dispersed with numerous nano-sized sulfur particles. Remarkably, nanocrystalline sulfur was anchored on the surfaces of graphene with the help of S-O bonds. The resulted Nano-S/FG with sulfur content as high as 75.4% exhibited excellent lithium storage performance with a high specific reversible capacity of 1268 mA h g(-1) at the current of 200 mA g(-1), and a specific reversible capacity of 536 mA h g(-1) even at the high current of 3200 mA g(-1). Additionally, the reversible capacity can remain as high as 900 mA h g(-1) after 200 cycles. It can be believed that this work supplied a considerable choice for lithium-sulfur battery.
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