Improved performance of dual-conducting polymer-coated sulfur composite with high sulfur utilization for lithium-sulfur batteries
| Autor: | Byung Won Cho, Yoon-Sung Lee, Tae-Gyung Jeong, Hun-Gi Jung, Kyung Yoon Chung, Yong-Tae Kim |
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| Rok vydání: | 2018 |
| Předmět: |
inorganic chemicals
Materials science Composite number chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention law Materials Chemistry chemistry.chemical_classification Conductive polymer Mechanical Engineering Metals and Alloys Polymer 021001 nanoscience & nanotechnology Sulfur Cathode 0104 chemical sciences Chemical engineering chemistry Mechanics of Materials Electrode Functional polymers 0210 nano-technology Sulfur utilization |
| Zdroj: | Journal of Alloys and Compounds. 742:868-876 |
| ISSN: | 0925-8388 |
| Popis: | This study is aimed at alleviating the inherent disadvantages of sulfur cathodes in lithium-sulfur (Li-S) batteries by encapsulating the sulfur particles with a dual (ionic and electronic)-conducting polymer via a simple, single-step procedure. Successful encapsulation by the polymer was confirmed by microscopic analyses. The encapsulated sulfur electrodes exhibit stable cycling performance and high sulfur utilization; in particular, the cell with 1 wt% dual conducting polymer-coated sulfur particles exhibit the best cycle performance with a discharge capacity of 1002 mAh g−1 after 100 cycles at 0.2 C-rate. As opposed to various sulfur-carbon composites reported previously, our 1 wt% dual conducting polymer-coated sulfur composite achieves a very high loading level of 99%. This simple strategy of encapsulating sulfur particles with functional polymers could be a potential pathway toward the commercialization of Li-S batteries. |
| Databáze: | OpenAIRE |
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