Details

Autor(en) / Beteiligte

• Lee, Yun Jung
• Yi, Hyunjung
• Kim, Woo-Jae
• Kang, Kisuk
• Yun, Dong Soo
• Strano, Michael S
• Ceder, Gerbrand
• Belcher, Angela M

Titel

Fabricating Genetically Engineered High-Power Lithium-Ion Batteries Using Multiple Virus Genes

Ist Teil von

• Science (American Association for the Advancement of Science), 2009-05, Vol.324 (5930), p.1051-1055

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2009

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• 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-FePO₄) fused to the viral major coat protein. The virus clone with the greatest affinity toward SWNTs enabled power performance of a-FePO₄ comparable to that of crystalline lithium iron phosphate (c-LiFePO₄) 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.