Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 15, Pages 7870-7876Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta07101h
Keywords
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Funding
- NSFC [51362009, 51162006]
- Hainan University's key discipline construction fund [ZXBJH-XK009, 201410589002]
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In order to enhance the long-term stability of sulfur cathodes used in rechargeable high energy lithium-sulfur (Li-S) batteries, layered Ti3C2 (L-Ti3C2) with an accordion-like structure was prepared by exfoliating Ti3AlC2 in 40% hydrofluoric acid. The L-Ti3C2 was then loaded with sulfur (57.6 wt%) to form a S/L-Ti3C2 composite. The composite was then used as a cathode material for Li-S batteries, which showed a high initial discharge capacity of 1291 mA h g(-1) and an excellent capacity retention of 970 mA h g(-1) after 100 cycles. The results suggest that two-dimensional carbides, similar to graphene and/or graphite, are a promising material for a wide range of applications in Li-S batteries and other electrochemical energy storage devices.
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