Inverse Vulcanization of Sulfur using Natural Dienes as Sustainable Materials for Lithium-Sulfur Batteries
| Autor: | David Mecerreyes, Iñaki Gomez, J. Alberto Blázquez, Olatz Leonet |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Battery (electricity)
Thermogravimetric analysis Materials science Polymers General Chemical Engineering Inorganic chemistry chemistry.chemical_element 02 engineering and technology Alkenes Lithium 010402 general chemistry Electrochemistry 01 natural sciences law.invention Electric Power Supplies Differential scanning calorimetry law Environmental Chemistry General Materials Science Electrodes chemistry.chemical_classification Vulcanization Polymer 021001 nanoscience & nanotechnology Sulfur 0104 chemical sciences General Energy chemistry 0210 nano-technology |
| Zdroj: | ChemSusChem. 9:3419-3425 |
| ISSN: | 1864-5631 |
| Popis: | Lithium-sulfur batteries are among the most promising next-generation battery systems due to the high capacity of sulfur as cathodic material. Beyond its interesting intrinsic properties, sulfur possesses a very low conductivity and complex electrochemistry, which involves the high solubility of the lithium sulfides in the electrolyte. These two characteristics are at the core of a series of limitations of its performance as active cathode material, which leads to batteries with low cyclability. Recently, inverse vulcanized sulfur was shown to retain capacity far better than elemental sulfur, leading to batteries with excellent cyclability. Nevertheless, the diene co-monomers used so far in the inverse vulcanization process are man-made molecules. Herein, a tentative work on exploring inverse vulcanization using two naturally available monomers, diallyl sulfide and myrcene, is presented. The inverse vulcanization of sulfur was successfully completed, and the resulting polymers were characterized by FTIR, NMR spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. Afterwards these polymers were tested as cathodic materials in lithium-sulfur cells. The sulfur-natural dienes materials exhibited high capacity at different C rates and high lifetime over 200 cycles with very high capacity retention at a moderate C rate of C/5. Altogether, these materials made from inexpensive and abundant chemicals are an excellent option as sustainable materials for electrochemical energy storage. |
| Databáze: | OpenAIRE |
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