Improving the Capacity of Sodium Ion Battery Using a Virus-Templated Nanostructured Composite Cathode

TitleImproving the Capacity of Sodium Ion Battery Using a Virus-Templated Nanostructured Composite Cathode
Publication TypeJournal Article
Year of Publication2015
AuthorsMoradi, M, Li, Z, Qi, J, Xing, W, Xiang, K, Chiang, YM, Belcher, AM
JournalNano Letters
Volume15
Issue5
Pagination2917 - 2921
Date Published2015/05//
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.