Journal
RSC ADVANCES
Volume 8, Issue 1, Pages 429-434Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra10858c
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Funding
- National Natural Science Foundation of China [21474049, 51673034, 21574063, 21404055, 21272260, 21271160]
- Shenzhen Science and Technology Innovation Committee [JCYJ20160531151102203, JCYJ20160608140827794]
- Scientific Research Foundation of Graduate School of Nanjing University
- Zhengzhou University of Light Industry
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Lithium-sulfur batteries hold great promise for serving as next generation high energy density batteries. However, the shuttle of polysulfide induces rapid poor cycling stability of lithium-sulfur cells. Using an interlayer inserted between the sulfur cathode and the separator to capture these soluble intermediates can diminish this effect effectively. Herein, a ultrathin TiO2 nanotubes/graphene oxide (TiO2 NTs/GO) hybrid membrane (the thickness is less than 10 mm) used as an interlayer in lithium sulfur battery can effectively improve the cycle performance by trapping the soluble polysulfides. As a result, the sulfur cathode with TiO2 NTs/GO hybrid membrane as interlayer exhibits an initial discharge capacity of 1431.5 mA h g(-1) and maintains the reversible capacity of 845.8 mA h g(-1) at 0.1C after 100 cycles.
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