Electrocatalytic Assisted Performance Enhancement for the Na-S Battery in Nitrogen-Doped Carbon Nanospheres Loaded with Fe
| Autor: | Libo Deng, Peixin Zhang, Yanyi Wang, Tingshu He, Licong Huang, Denisa Demko, Jianhui Zhu, Amr M. Abdelkader |
|---|---|
| Přispěvatelé: | Abdelkader, Amr [0000-0002-8103-2420], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Battery (electricity)
inorganic chemicals Materials science Nitrogen Iron Pharmaceutical Science chemistry.chemical_element catalytic activity hollow N-doped carbon nanospheres Energy storage Sodium–sulfur battery Article Catalysis Analytical Chemistry lcsh:QD241-441 sodium-sulfur battery Electric Power Supplies lcsh:Organic chemistry Drug Discovery Physical and Theoretical Chemistry Organic Chemistry Sodium Sulfur Carbon chemistry Chemical engineering Chemistry (miscellaneous) chemical absorption Molecular Medicine polysulfides Current density Nanospheres |
| Zdroj: | Molecules Volume 25 Issue 7 Molecules, Vol 25, Iss 1585, p 1585 (2020) |
| ISSN: | 1420-3049 |
| DOI: | 10.3390/molecules25071585 |
| Popis: | Room temperature sodium-sulfur batteries have been considered to be potential candidates for future energy storage devices because of their low cost, abundance, and high performance. The sluggish sulfur reaction and the &ldquo shuttle effect&rdquo are among the main problems that hinder the commercial utilization of room temperature sodium-sulfur batteries. In this study, the performance of a hybrid that was based on nitrogen (N)-doped carbon nanospheres loaded with a meagre amount of Fe ions (0.14 at.%) was investigated in the sodium-sulfur battery. The Fe ions accelerated the conversion of polysulfides and provided a stronger interaction with soluble polysulfides. The Fe-carbon nanospheres hybrid delivered a reversible capacity of 359 mAh· g&minus 1 at a current density of 0.1 A· 1 and retained a capacity of 180 mAh· 1 at 1 A· 1, after 200 cycles. These results, combined with the excellent rate performance, suggest that Fe ions, even at low loading, are able to improve the electrocatalytic effect of carbon nanostructures significantly. In addition to Na-S batteries, the new hybrid is anticipated to be a strong candidate for other energy storage and conversion applications such as other metal-sulfur batteries and metal-air batteries. |
| Databáze: | OpenAIRE |
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