In:
Science, American Association for the Advancement of Science (AAAS), Vol. 324, No. 5930 ( 2009-05-22), p. 1051-1055
Abstract:
Development of materials that deliver more energy at high rates is important for high-power applications, including portable electronic devices and hybrid electric vehicles. For lithium-ion (Li + ) batteries, reducing material dimensions can boost Li + ion and electron transfer in nanostructured electrodes. By manipulating two genes, we equipped viruses with peptide groups having affinity for single-walled carbon nanotubes (SWNTs) on one end and peptides capable of nucleating amorphous iron phosphate(a-FePO 4 ) fused to the viral major coat protein. The virus clone with the greatest affinity toward SWNTs enabled power performance of a-FePO 4 comparable to that of crystalline lithium iron phosphate (c-LiFePO 4 ) and showed excellent capacity retention upon cycling at 1C. This environmentally benign low-temperature biological scaffold could facilitate fabrication of electrodes from materials previously excluded because of extremely low electronic conductivity.
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.1171541
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
2009
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
detail.hit.zdb_id:
2060783-0
SSG:
11
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