Silver vanadium phosphorous oxide, Ag2VO2PO4: Chimie douce preparation and resulting lithium cell electrochemistry

Recently, we have shown silver vanadium phosphorous oxide (Ag 2 VO 2 PO 4 , SVPO) to be a promising cathode material for lithium based batteries. Whereas the first reported preparation of SVPO employed an elevated pressure, hydrothermal approach, we report herein a novel ambient pressure synthesis m...

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Bibliographic Details
Published in:Journal of power sources 2011-08, Vol.196 (16), p.6781-6787
Main Authors: YOUNG JIN KIM, MARSCHILOK, Amy C, TAKEUCHI, Kenneth J, TAKEUCHI, Esther S
Format: Article
Language:English
Subjects:
Applied sciences
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
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Summary:Recently, we have shown silver vanadium phosphorous oxide (Ag 2 VO 2 PO 4 , SVPO) to be a promising cathode material for lithium based batteries. Whereas the first reported preparation of SVPO employed an elevated pressure, hydrothermal approach, we report herein a novel ambient pressure synthesis method to prepare SVPO, where our chimie douce preparation is readily scalable and provides material with a smaller, more consistent particle size and higher surface area relative to SVPO prepared via the hydrothermal method. Lithium electrochemical cells utilizing SVPO cathodes made by our new process show improved power capability under constant current and pulse conditions over cells containing cathode from SVPO prepared via the hydrothermal method.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2010.10.054