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Recycling rice husks for high-capacity lithium battery anodes
Cited 232 time in
Web of Science
Cited 252 time in Scopus
- Authors
- Issue Date
- 2013-07
- Publisher
- National Academy of Sciences
- Citation
- Proceedings of the National Academy of Sciences of the United States of America, Vol.110 No.30, pp.12229-12234
- 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 108 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.
- ISSN
- 0027-8424
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