A thin TiO2 NTs/GO hybrid membrane applied as an interlayer for lithium–sulfur batteries
| Autor: | Dongshan Zhou, Lijie Wang, Chen Zuo, Xiaoqian Xu, Yuanxin Wan, Zhijun Chen, Haimei Song |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Graphene General Chemical Engineering Oxide chemistry.chemical_element Lithium–sulfur battery 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Sulfur Cathode 0104 chemical sciences law.invention chemistry.chemical_compound Membrane Chemical engineering chemistry law 0210 nano-technology Polysulfide Separator (electricity) |
| Zdroj: | RSC Advances. 8:429-434 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c7ra10858c |
| Popis: | 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 μm) 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. |
| Databáze: | OpenAIRE |
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