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

Journal Article · · Nano Letters
DOI:https://doi.org/10.1021/nl504676v· OSTI ID:1211201

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.

Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
DOE Contract Number:
DE-AR0000065
OSTI ID:
1211201
Journal Information:
Nano Letters, Vol. 15, Issue 5; ISSN 1530-6984
Country of Publication:
United States
Language:
English