Rational design of MXene@TiO2 nanoarray enabling dual lithium polysulfide chemisorption towards high-performance lithium–sulfur batteries
| العنوان: | Rational design of MXene@TiO2 nanoarray enabling dual lithium polysulfide chemisorption towards high-performance lithium–sulfur batteries |
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| المؤلفون: | Liang-Liang Gu, Sheng-You Qiu, Xiao-Dong Zhu, Jian Gao, Zaixing Jiang, Gang Wu, Chuang Wang, Li-Su Zhang, Ke-Xin Wang |
| المصدر: | Nanoscale. 12:16678-16684 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Rational design, chemistry.chemical_element, Heterojunction, Conductivity, Electrochemistry, Sulfur, Metal, chemistry.chemical_compound, chemistry, Chemical engineering, Chemisorption, visual_art, visual_art.visual_art_medium, General Materials Science, Polysulfide |
| الوصف: | Lithium–sulfur (Li–S) batteries face a few vital issues, including poor conductivity, severe volume expansion/contraction, and especially the detrimental shuttle effect during the long-term electrochemical process. Herein, we designed a hierarchical MXene@TiO2 nanoarray via in situ solvothermal strategies followed by heat treatment. The MXene@TiO2 heterostructure achieves superior charge transfer and sulfur encapsulation. Based on the polar–polar and Lewis acid–base mechanism, the robust dual chemisorption capability to trap polysulfides can be synergistically realized through the intense polarity of TiO2 and the abundant acid metal sites of MXene. Hence, the MXene@TiO2 nanoarray as a sulfur host retains a substantially stable discharge capacity of 612.7 mA h g−1 after 500 cycles at a rate of 2 C, which represents a low fading rate of 0.058% per cycle. |
| تدمد: | 2040-3372 2040-3364 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::e43cce0c7b602e40703bb2171c5489da https://doi.org/10.1039/d0nr03528a |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........e43cce0c7b602e40703bb2171c5489da |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20403372 20403364 |
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