| Titre : |
Carbon nanofiber nonwovens as electrode materials for the energy transition |
| Type de document : |
texte imprimé |
| Auteurs : |
Eui-Young Shin, Auteur ; Alexander PreuBner, Auteur ; Jochen S. Gutmann, Auteur ; Thomas Mayer-Gall, Auteur ; Muhammad Saif Maqsood, Auteur ; Andreas Wego, Auteur ; Sebastian Daniel Hirt, Auteur ; Pascal Sous, Auteur ; Sebastian Wennig, Auteur ; Angelika Heinzel, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 49-52 |
| Note générale : |
Bibliogr. |
| Langues : |
Multilingue (mul) |
| Catégories : |
Electrodes de carbone
Electrofilature
Fibres de carbone
Nanofibres
Nontissés
Procédés de fabrication
Transition énergétique
|
| Index. décimale : |
677.6 Tissus obtenus par des procédés spéciaux, quelle que soit leur composition : jacquard, feutres tissés et non tissés, tapisseries, tissus ajourés |
| Résumé : |
Lithium-sulphur batteries (LSB) are a promising alternative to lithium-ion batteries (LIB) due to their high theoretical energy density. However, due to the low electrical and ionic conductivity of sulfur or Lie S, the theoretical energy density has not yet been achieved in practice.
Metal foils are usually useras current collectors for LSBs. These account for approx. 15-20 % of the weight and 10-15 % of the cost of a battery. A higher active material load, higher capacity, better high-current capability and better structural integrity by absorbing the mechanical stress through the pore network and thus better long-term stability is achieved when three-dimensionally structured current collectors are used. In this context, carbon nanofibers (CNF) represent a promising and lightweight alternative to metallic current collectors. CNFs should not be confused with carbon nanotubes. |
| Note de contenu : |
- General manufacturing process for CNF nonwovens
- Modification of CNF for use as current collector in LSB
- Fig. 1a : General mode of operation of a spinning stand for electrostatic spinning of nanofibers
- Fig. 1b : Reaction process of the CNF synthesis
- Fig. 2 : SEM images of the spun PAN nonwovens at different concentrations before and after carbonization
- Fig. 3 : SEM images of the CNFs with different spinning additives and the corresponding BET surfaces
- Fig. 4 : SEM images of porous CNFs and CNFs with nanoparticles and the corresponding discharge capacities plotted against the number of cycles |
| En ligne : |
https://drive.google.com/file/d/15obm7UJskOPl7dEX_Clsnn1rirZ9nuS_/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41386 |
in TECHNICAL TEXTILES > Vol. 67, N° 3 (2024) . - p. 49-52
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