Changes on the Surface of the SiO2/C Composite, Leading to the Formation of Conductive Carbon Structures with Complex Nature of DC Conductivity
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Preparation of Layers
2.2. Characterization
3. Results and Discussion
3.1. Raman Spectroscopy
- The first one is located at 1604, 1608, and 1602 cm−1 for samples sintered at 600, 800, and 1000 °C, respectively. It comes from nanocrystalline graphite (NG) and is upshifted in samples sintered at 600 °C and 800 °C because of the small contribution of the D’ peak. With the rising temperature, graphene planes grow mainly in the planar direction, which explains the contribution to growth of in-plane defect mode D’. Only in the sample sintered at 1000 °C was it possible to separate the D’ peak, located at 1617 cm−1.
- The third G peak is at 1526, 1543, and 1553 cm−1 for samples sintered at 600, 800, and 1000 °C, respectively, and can be assigned to a:CH. The higher the temperature, the more upshifted the G peak is. This slight upshift can be a result of larger tension in bonds [22].
3.2. FTIR Spectroscopy
3.3. SEM and EDS
3.4. XPS Analysis
3.5. Electric Measurements
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Atomic Percent (±1%) | |||
---|---|---|---|
Element | 600 °C | 800 °C | 1000 °C |
C | 19% | 43% | 0% |
O | 54% | 34% | 61% |
Si | 25% | 22% | 36% |
Fe | 3% | 2% | 3% |
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Okoczuk, P.; Łapiński, M.; Miruszewski, T.; Kupracz, P.; Wicikowski, L. Changes on the Surface of the SiO2/C Composite, Leading to the Formation of Conductive Carbon Structures with Complex Nature of DC Conductivity. Materials 2021, 14, 2158. https://doi.org/10.3390/ma14092158
Okoczuk P, Łapiński M, Miruszewski T, Kupracz P, Wicikowski L. Changes on the Surface of the SiO2/C Composite, Leading to the Formation of Conductive Carbon Structures with Complex Nature of DC Conductivity. Materials. 2021; 14(9):2158. https://doi.org/10.3390/ma14092158
Chicago/Turabian StyleOkoczuk, Piotr, Marcin Łapiński, Tadeusz Miruszewski, Piotr Kupracz, and Leszek Wicikowski. 2021. "Changes on the Surface of the SiO2/C Composite, Leading to the Formation of Conductive Carbon Structures with Complex Nature of DC Conductivity" Materials 14, no. 9: 2158. https://doi.org/10.3390/ma14092158