| Autor: |
Ya Song, Xiang Long, Zhihong Luo, Chong Guo, Chuan-Nan Geng, Quan-Sheng Ouyang, Zhiyuan Han, Guangmin Zhou, Jiao-Jing Shao |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
ACS applied materialsinterfaces. 14(28) |
| ISSN: |
1944-8252 |
| Popis: |
Hollow carbon spheres or core-sheath porous carbon spheres have been widely used in the S cathode of lithium-sulfur batteries. However, the sphere shells or the pore walls may block the free transport of active species to a certain extent and may have a negative influence on the effective accommodation of elemental sulfur. Herein, solid but porous carbon spheres (PNCS) with large porosity and high specific surface area are developed, which enable high sulfur loading and ample cathode/electrolyte contact area, and the interconnected open pore channels significantly shorten the ion/electron transport pathways. Together with high-conducting nitrogen-doped graphene (NG), facilitated polysulfide conversion kinetics is realized in the as-assembled Li-S batteries, which deliver a high initial discharge capacity of 1445 mAh g |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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