dc.contributor.author | Blanco, Maria Valeria | |
dc.contributor.author | Renman, Viktor | |
dc.contributor.author | Zhu, Jiefang | |
dc.contributor.author | Vullum-Bruer, Fride | |
dc.contributor.author | Svensson, Ann Mari | |
dc.date.accessioned | 2021-03-08T12:29:41Z | |
dc.date.available | 2021-03-08T12:29:41Z | |
dc.date.created | 2021-03-04T09:11:00Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 1432-8488 | |
dc.identifier.uri | https://hdl.handle.net/11250/2732169 | |
dc.description.abstract | In this work, we present a comprehensive and systematic study on the use of low-cost and highly abundant carbon precursors to obtain SiO2/C anodes with superior electrochemical performance towards Li-ions. Different SiO2/C composites are prepared by soaking silica nanoparticles in solutions containing 20 wt%, 40 wt%, or 60 wt% of glucose, sucrose, or cornstarch, followed by thermal decomposition of the carbohydrates at 850 °C or 1200 °C. Structural, microstructural, and textural differences on the composites derived from the different carbon coating treatments are related to the electrochemical performance of the anodes. Composites containing final carbon contents close to 15 wt% show a complete coverage of the SiO2 particles with a nanometric carbon layer and exhibit the best electrochemical results. The increase in the annealing temperature from 850 to 1200 °C reduces the porosity of the carbon layer and increases its level of ordering, both having positive effects on the overall electrochemical performance of the electrodes. SiO2/C composites coated with 40 wt% sucrose and heat treated at 1200 °C display the best electrochemical performance, delivering a reversible specific capacity of 723 mAhg−1 at 50 mAg−1 after 100 cycles, which is considerably higher than the reversible capacity of 233 mAhg−1 obtained with the uncoated material cycled under the same conditions | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Optimizing carbon coating parameters for obtaining SiO2/C anodes with improved electrochemical performance | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.journal | Journal of Solid State Electrochemistry | en_US |
dc.identifier.doi | 10.1007/s10008-021-04912-2 | |
dc.identifier.cristin | 1895521 | |
dc.relation.project | EC/H2020/730872 | en_US |
dc.relation.project | Norges forskningsråd: 274969 | en_US |
dc.description.localcode | Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |