High-Efficiency Polysulfide Trapping with g-C3N4/CNT Hybrids for Superior Lithium-Sulfur Batteries
I tiakina i:
| I whakaputaina i: | Energies vol. 18, no. 17 (2025), p. 4462-4476 |
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| Kaituhi matua: | |
| Ētahi atu kaituhi: | , , , , |
| I whakaputaina: |
MDPI AG
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| Ngā marau: | |
| Urunga tuihono: | Citation/Abstract Full Text + Graphics Full Text - PDF |
| Ngā Tūtohu: |
Kāore He Tūtohu, Me noho koe te mea tuatahi ki te tūtohu i tēnei pūkete!
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| Whakarāpopotonga: | Commercialization of lithium-sulfur (Li-S) batteries is critically hampered by the severe lithium polysulfide shuttle effect. Hence, designing multifunctional materials that synergistically provide physical confinement of polysulfides, chemical entrapment, and catalytic promotion is a viable route for improving Li-S battery performance. Herein, graphitic carbon nitride (g-C3N4) with abundant nitrogen atoms was used as the chemical adsorption material to realize a “physical-chemical” dual confinement for polysulfides. Furthermore, the integration of CNTs with g-C3N4 is intended to substantially enhance the conductivity of the cathode material. Consequently, the synthesized g-C3N4/CNT composite, which functions as an effective polysulfide immobilizer, significantly improved the cycling stability and discharge capacity of Li-S batteries. This enhancement can be attributed to its potent adsorption and catalytic activities. Li-S cells utilizing g-C3N4/CNT cathodes exhibit exceptional discharge capacity and notable rate capability. Specifically, after 100 cycles at 0.2 C, the discharge capacity was 701 mAh g−1. Furthermore, even at a high rate of 2 C, a substantial capacity of 457 mAh g−1 was retained. |
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| ISSN: | 1996-1073 |
| DOI: | 10.3390/en18174462 |
| Puna: | Publicly Available Content Database |