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P-doped porous carbon from camellia shell for high-performance room temperature sodium–sulfur batteries.
- Source :
- Nanotechnology; 11/19/2023, Vol. 34 Issue 47, p1-12, 12p
- Publication Year :
- 2023
-
Abstract
- Room-temperature sodium–sulfur batteries are still hampered by severe shuttle effects and sluggish kinetics. Most of the sulfur hosts require high cost and complex synthesis process. Herein, a facile method is proposed to prepare a phosphorous doped porous carbon (CSBP) with abundant defect sites from camellia shell by oxidation pretreatment combined with H<subscript>3</subscript>PO<subscript>4</subscript> activation. The pretreatment can introduce pores and adjust the structure of biochar precursor, which facilitates the further activation of H<subscript>3</subscript>PO<subscript>4</subscript> and effectively avoids the occurrence of large agglomeration. Profiting from the synergistic effects of physical confinement and doping effect, the prepared CSBP/S cathode delivers a high reversible capacity of 804 mAh g<superscript>−1</superscript> after 100 cycles at 0.1 C and still maintains an outstanding capacity of 458 mAh g<superscript>−1</superscript> after 500 cycles at 0.5 C (1 C = 1675 mA g<superscript>−1</superscript>). This work provides new insights into the rational design of the microstructures of carbon hosts for high-performance room temperature sodium–sulfur batteries. [ABSTRACT FROM AUTHOR]
- Subjects :
- SODIUM-sulfur batteries
CAMELLIAS
DOPING agents (Chemistry)
POROSITY
CARBON
BIOCHAR
Subjects
Details
- Language :
- English
- ISSN :
- 09574484
- Volume :
- 34
- Issue :
- 47
- Database :
- Complementary Index
- Journal :
- Nanotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 171808338
- Full Text :
- https://doi.org/10.1088/1361-6528/acee85