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Stibnite in carbon sheets stores sodium better
Natural Sb2S3 anchored on sulfur-doped carbon sheets delivers much higher reversible sodium-storage capacity and cycle retention than raw stibnite.
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What ore was used as the Sb2S3 source?
Natural stibnite (Sb2S3).
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified
What is the theoretical specific capacity of Sb2S3 for Na storage?
946 mA h g−1 (12 Na per formula unit).
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified
What volume change accompanies sodiation of Sb2S3?
About 390%.
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified
What reversible capacity did Sb2S3/SCS keep after 100 cycles?
455.8 mA h g−1.
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified
What was capacity retention versus raw stibnite after 100 cycles?
70.8% vs 30.7%.
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified
How were the carbon sheets carbonized?
Precursor + SDS annealed at 800 °C for 2 h under Ar.
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified
What voltage window was used for CV and cycling?
0.01 to 2.5 V vs Na.
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified
What crystal phase did XRD assign?
Orthorhombic Sb2S3 (PDF 65-2432).
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified
How was stibnite deposited onto SCS?
Dissolve ore in Na2S, mix with SCS, precipitate with H2SO4, anneal 300 °C.
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified
What synthesis class do the authors emphasize?
A facile wet chemical approach using natural ore.
Source: Natural stibnite ore (Sb<sub>2</sub>S<sub>3</sub>) embedded in sulfur-doped carbon sheets: enhanced electrochemical properties as anode for sodium ions storage · DOI · quote verified