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Recycling rice husks for high-capacity lithium battery anodes
- Source :
- Proceedings of the National Academy of Sciences. 110:12229-12234
- Publication Year :
- 2013
- Publisher :
- Proceedings of the National Academy of Sciences, 2013.
-
Abstract
- The rice husk is the outer covering of a rice kernel and protects the inner ingredients from external attack by insects and bacteria. To perform this function while ventilating air and moisture, rice plants have developed unique nanoporous silica layers in their husks through years of natural evolution. Despite the massive amount of annual production near 10 8 tons worldwide, so far rice husks have been recycled only for low-value agricultural items. In an effort to recycle rice husks for high-value applications, we convert the silica to silicon and use it for high-capacity lithium battery anodes. Taking advantage of the interconnected nanoporous structure naturally existing in rice husks, the converted silicon exhibits excellent electrochemical performance as a lithium battery anode, suggesting that rice husks can be a massive resource for use in high-capacity lithium battery negative electrodes.
- Subjects :
- Microscopy, Electron, Scanning Transmission
Conservation of Natural Resources
Multidisciplinary
Materials science
Moisture
biology
Waste management
Silicon
Nanoporous
chemistry.chemical_element
Oryza
Lithium
biology.organism_classification
Husk
Lithium battery
Anode
chemistry
Physical Sciences
Electrodes
Subjects
Details
- ISSN :
- 10916490 and 00278424
- Volume :
- 110
- Database :
- OpenAIRE
- Journal :
- Proceedings of the National Academy of Sciences
- Accession number :
- edsair.doi.dedup.....4cd1b6a14af4662349dfe45620c8dd42