title: Improving the capacity of sodium ion battery using a virus-templated nanostructured composite cathode.
abstract: In this work we investigated an energy-efficient biotemplated route to synthesize nanostructured FePO4 for sodium-based batteries. Self-assembled M13 viruses and single wall carbon nanotubes (SWCNTs) have been used as a template to grow amorphous FePO4 nanoparticles at room temperature (the active composite is denoted as Bio-FePO4-CNT) to enhance the electronic conductivity of the active material. Preliminary tests demonstrate a discharge capacity as high as 166 mAh/g at C/10 rate, corresponding to composition Na0.9FePO4, which along with higher C-rate tests show this material to have the highest capacity and power performance reported for amorphous FePO4 electrodes to date.
authors: †Department of Materials Science and Engineering, ‡The David H. Koch Institute for Integrative Cancer Research, and §Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
authors: Maryam
authors: M
authors: Moradi
authors: †Department of Materials Science and Engineering, ‡The David H. Koch Institute for Integrative Cancer Research, and §Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
authors: Zheng
authors: Z
authors: Li
authors: †Department of Materials Science and Engineering, ‡The David H. Koch Institute for Integrative Cancer Research, and §Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
authors: Jifa
authors: J
authors: Qi
authors: †Department of Materials Science and Engineering, ‡The David H. Koch Institute for Integrative Cancer Research, and §Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
authors: Wenting
authors: W
authors: Xing
authors: †Department of Materials Science and Engineering, ‡The David H. Koch Institute for Integrative Cancer Research, and §Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
authors: Kai
authors: K
authors: Xiang
authors: †Department of Materials Science and Engineering, ‡The David H. Koch Institute for Integrative Cancer Research, and §Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
authors: Yet-Ming
authors: YM
authors: Chiang
authors: †Department of Materials Science and Engineering, ‡The David H. Koch Institute for Integrative Cancer Research, and §Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
authors: Angela M
authors: AM
authors: Belcher
keywords: SWCNT; Sodium ion battery; amorphous FePO4; biotemplated active material; high-power rechargeable battery