Comparison of LiFePO4 from different sources

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The lithium iron phosphate chemistry is plagued by the poor conductivity and slow diffusion in the solid phase. In order to alleviate these problems, various research groups have adopted different strategies including decreasing the particle sizes, increasing the carbon content, and adding dopants. In this study, we obtained LiFePO{sub 4} powders and/or electrodes from six different sources and used a combined model-experimental approach to compare the performance. Samples ranged from 0.4% to 15% ''in-situ'' carbon. In addition, particle sizes varied by as much as an order of magnitude between samples. The study detailed in this manuscript allows us to provide ... continued below

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Striebel, Kathryn; Shim, Joongpyo; Srinivasan, Venkat & Newman, John June 21, 2004.

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The lithium iron phosphate chemistry is plagued by the poor conductivity and slow diffusion in the solid phase. In order to alleviate these problems, various research groups have adopted different strategies including decreasing the particle sizes, increasing the carbon content, and adding dopants. In this study, we obtained LiFePO{sub 4} powders and/or electrodes from six different sources and used a combined model-experimental approach to compare the performance. Samples ranged from 0.4% to 15% ''in-situ'' carbon. In addition, particle sizes varied by as much as an order of magnitude between samples. The study detailed in this manuscript allows us to provide insight into the relative importance of the conductivity of the samples compared to the particle size, the impact of having a distribution in particle sizes, and ideas for making materials in order to maximize the power capability of this chemistry.

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  • Journal Name: Journal of the Electrochemical Society; Journal Volume: 152; Journal Issue: 4; Related Information: Journal Publication Date: 2005

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  • Report No.: LBNL--55781
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 860896
  • Archival Resource Key: ark:/67531/metadc781701

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 21, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • April 1, 2016, 7:20 p.m.

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Striebel, Kathryn; Shim, Joongpyo; Srinivasan, Venkat & Newman, John. Comparison of LiFePO4 from different sources, article, June 21, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc781701/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.