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ReportsVirus-Enabled Synthesis and Assembly of Nanowires for Lithium Ion Battery Electrodes![]()
The selection and assembly of materials are central issues in the development of smaller, more flexible batteries. Cobalt oxide has shown excellent electrochemical cycling properties and is thus under consideration as an electrode for advanced lithium batteries. We used viruses to synthesize and assemble nanowires of cobalt oxide at room temperature. By incorporating gold-binding peptides into the filament coat, we formed hybrid gold–cobalt oxide wires that improved battery capacity. Combining virus-templated synthesis at the peptide level and methods for controlling two-dimensional assembly of viruses on polyelectrolyte multilayers provides a systematic platform for integrating these nanomaterials to form thin, flexible lithium ion batteries.
1 Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
2 Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. 3 Biological Engineering Division, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. 4 Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. 5 Institute of Collaborative Biotechnology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. * Present address: Materials Science and Technology Division, Korea Institute of Science and Technology, Seoul 136-791, Korea.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)