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Pitch-based carbon/nano-silicon composite, an efficient anode for Li-ion batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Escamilla-Pérez, Angel Manuel Roland, Aude Giraud, Sophie Guiraud, Céline Virieux, Héloïse Demoulin, Kévin Oudart, Yohan Louvain, Nicolas Monconduit, Laure |
| Copyright Year | 2019 |
| Abstract | As silicon–carbon electrodes with low silicon ratio are the negative electrode foreseen by battery manufacturers for the next generation of Li-ion batteries, a great effort has to be made to improve their efficiency and decrease their cost. Pitch-based carbon/nano-silicon composites are proposed as a high performance and realistic electrode material of Li-ion battery anodes. Composites are prepared in a simple way by the pyrolysis under argon atmosphere of silicon nanoparticles, obtained by a laser pyrolysis technique, and a low cost carbon source: petroleum pitch. The effect of the size and the carbon coating of the silicon nanoparticles on the electrochemical performance in Li-ion batteries is highlighted, proving that the carbon coating enhances cycling stability. Helped by a homogeneous dispersion of silicon nanoparticles into the amorphous carbon matrix, a high coulombic efficiency (especially in the first cycle) and a high stability over cycling is observed (over 1100 mA h g−1 after 100 cycles at relatively high current density 716 mA g−1 for Si based electrodes), which are superior to pitch-based carbon/silicon composites found in literature. This simple synthesis method may be extrapolated to other electrode active materials. |
| Starting Page | 10546 |
| Ending Page | 10553 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C9RA00437H |
| Volume Number | 9 |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/articlepdf/2019/ra/c9ra00437h |
| Alternate Webpage(s) | https://doi.org/10.1039/C9RA00437H |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
