Impact of Sulfur Infiltration Time and Its Content in an N-doped Mesoporous Carbon for Application in Li-S Batteries
Abstract
:1. Introduction
2. Results and Discussion
2.1. Sulfur Infiltration Time Effect
2.2. Sulfur Content Effect
2.3. Electrochemical Properties
3. Materials and Methods
3.1. Preparation of S/C Composites
3.2. Characterization
3.3. Electrochemical Tests
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Elemental Analysis | XPS | ||||||
---|---|---|---|---|---|---|---|
C (wt.%) | N (wt.%) | H (wt.%) | O (wt.%) | Nitrogen | |||
Graphitic-N | Pyrrolic-N | Pyridinic-N | N-o- | ||||
74.6 | 7.34 | 1.14 | 16.9 | 39.6 | 10.1 | 24.3 | 26 |
Samples | MC | S/C 10:90 | S/C 20:80 | S/C 40:60 |
---|---|---|---|---|
Sulfur content by TGA (%) | - | 9.80 | 21.5 | 41.0 |
Specific surface area (m2/g) | 872.8 | 479.0 | 352.3 | 177.6 |
Pore volume (cm3/g) | 1.04 | 0.70 | 0.60 | 0.40 |
Lattice crystal parameter, a0 (Å) | 99.0 | 100 | 100 | 97.0 |
Pore diameter Dp,1 (Å) | 42 | 38 | 37 | 38 |
Pore diameter Dp,2 (Å) | 89 | 87 | 87 | 82 |
Wall thickness variation, Wt1 (Å) | 57 | 63 | 63 | 59 |
Sample | Resistances | Warburg Factor Ωs−1/2 | Diffusivity (cm2/s) | |
---|---|---|---|---|
Rs (Ω) | Rc (Ω) | |||
S/C 10:90 | 2.91 | 35.0 | 3.41 | 7.05 × 10−22 |
S/C 20:80 | 2.30 | 44.4 | 2.83 | 2.73 × 10−22 |
S/C 40:70 | 2.24 | 77.1 | 4.01 | 3.67 × 10−23 |
S/C 70:30 | 4.01 | 216 | − | − |
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Laverde, J.; Rosero-Navarro, N.C.; Miura, A.; Buitrago-Sierra, R.; Tadanaga, K.; López, D. Impact of Sulfur Infiltration Time and Its Content in an N-doped Mesoporous Carbon for Application in Li-S Batteries. Batteries 2022, 8, 58. https://doi.org/10.3390/batteries8060058
Laverde J, Rosero-Navarro NC, Miura A, Buitrago-Sierra R, Tadanaga K, López D. Impact of Sulfur Infiltration Time and Its Content in an N-doped Mesoporous Carbon for Application in Li-S Batteries. Batteries. 2022; 8(6):58. https://doi.org/10.3390/batteries8060058
Chicago/Turabian StyleLaverde, Jennifer, Nataly C. Rosero-Navarro, Akira Miura, Robison Buitrago-Sierra, Kiyoharu Tadanaga, and Diana López. 2022. "Impact of Sulfur Infiltration Time and Its Content in an N-doped Mesoporous Carbon for Application in Li-S Batteries" Batteries 8, no. 6: 58. https://doi.org/10.3390/batteries8060058