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Organic Solvent Free Process to Fabricate High Performance Silicon/Graphite Composite Anode
- Source :
- Journal of Composites Science, Volume 5, Issue 7, Journal of Composites Science, Vol 5, Iss 188, p 188 (2021)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- Cycling stability is a key challenge for application of silicon (Si)-based composite anodes as the severe volume fluctuation of Si readily leads to fast capacity fading. The binder is a crucial component of the composite electrodes. Although only occupying a small amount of the total composite mass, the binder has major impact on the long-term electrochemical performance of Si-based anodes. In recent years, water-based binders including styrene-butadiene rubber (SBR) and carboxymethyl cellulose (CMC) have attracted wide research interest as eco-friendly and low-cost alternatives for the conventional poly(vinylidene difluoride) (PVDF) binder in Si anodes. In this study, Si-based composite anodes are fabricated by simple solid mixing of the active materials with subsequent addition of SBR and CMC binders. This approach bypasses the use of toxic and expansive organic solvents. The factors of binder, silicon, and graphite materials have been systematically investigated. It is found that the retained capacities of the anodes are more than 440 mAh/g after 400 cycles. These results indicate that organic solvent free process is a facile strategy for producing high performance silicon/graphite composite anodes.
- Subjects :
- Technology
Materials science
anode
Silicon
Science
020209 energy
Composite number
lithium-ion batteries
chemistry.chemical_element
02 engineering and technology
Electrochemistry
water-based binders
Natural rubber
0202 electrical engineering, electronic engineering, information engineering
medicine
carboxymethyl cellulose (CMC)
Graphite
Engineering (miscellaneous)
graphite
silicon
021001 nanoscience & nanotechnology
Anode
Carboxymethyl cellulose
chemistry
Chemical engineering
visual_art
Electrode
Ceramics and Composites
visual_art.visual_art_medium
styrene-butadiene rubber (SBR)
0210 nano-technology
medicine.drug
Subjects
Details
- Language :
- English
- ISSN :
- 2504477X
- Database :
- OpenAIRE
- Journal :
- Journal of Composites Science
- Accession number :
- edsair.doi.dedup.....68fad38e4b80c17ffee9f5b1c2d4e8ca
- Full Text :
- https://doi.org/10.3390/jcs5070188