Journal
CHEMISTRY OF MATERIALS
Volume 21, Issue 13, Pages 2895-2903Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm900698p
Keywords
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Funding
- Australian Research Council (ARC) Federation Fellowship
- CSIRO
- University of Melbourne/CSIRO Collaborative Research Grant Scheme
- Albert Shimmins Writing-up Award
- The University or Melbourne
- Australian Institute of Nuclear Science and Engineering award [AINGRA07027]
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Porous LiFePO4 has been prepared via a solution-based templating technique. Beads of poly (methyl methacrylate) were synthesized with diameters of 100, 140, and 270 nm and used to form colloidal crystal templates to produce LiFePO4, which featured pores spanning from 10 to 100 nm. The use of colloidal crystal templates allowed an examination of the effects of pore size on the electrochemical properties. The templated LiFePO4 samples were full), characterized using SEM. TEM, XRD, Rietveld analysis, and nitrogen sorption prior to electrochemical testing. The materials with the largest pores, around 100 nm diameter, gave the best discharge capacities, with 160 mA h g(-1) at 0.1 C and 115 mA h g(-1) at 5C being achieved. This compares with a theoretical discharge capacity of 170 mA h g(-1).
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