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The electronic properties of chemically delithiated Li_xFePO_4

Dodd, J. and Ait Salah, A. and Mauger, A. and Gendron, F. and Fultz, B. and Yazami, R. and Julien, C. M. (2006) The electronic properties of chemically delithiated Li_xFePO_4. ECS Transactions, 1 (26). pp. 39-45. ISSN 1938-6737.

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We report on the structure and the electronic features of LiFePO4 and the delithiated mixture (1-x)Li_1FePO_4 + x Li_0FePO_4 powder obtained by chemical delithiation. X-ray diffraction, Fourier transform infrared spectroscopy, and magnetic experiments are analyzed for x = 0.0, 0.5, and 1.0. The magnetic properties give evidence of a super-paramagnetism associated to iron-based ferromagnetic nanoparticles, superposed to the intrinsic magnetic contribution of LiFePO_4 which undergoes an antiferromagnetic ordering at T_N(x=1)=50 K and T_N(x=0)=125 K. Magnetization curves show superparamagnetism due to nanometer- sized magnetic particles. The magnetic clustering (amount of iron in the ferromagnetic nanoparticles, mean size distribution) is independent of the lithium concentration.

Item Type:Article
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Fultz, B.0000-0002-6364-8782
Yazami, R.0000-0002-0085-5012
Alternate Title:The electronic properties of chemically delithiated LixFePO4
Additional Information:© 2006 ECS - The Electrochemical Society. We would like to thank M. Selmane for his assistance in XRD experiments. A.A.S.'s work is supported by a Ph.D. grant from the Morocco-French cooperation program under contract No. MA/03/71. US-DOE support through Basic Energy Sciences Grant DE-FG03-00ER15035 is acknowledged.
Funding AgencyGrant Number
Morocco-French cooperation programMA/03/71
Department of Energy (DOE)DE-FG03-00ER15035
Record Number:CaltechAUTHORS:20180913-133203597
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Official Citation:C. M. Julien, Joanna L. Dodd, Atmane Ait Salah, Alain Mauger, Francois Gendron, Bret Fultz, and Rachid Yazami The Electronic Properties of Chemically Delithiated LiFePO4 ECS Trans. 2006 1(26): 39-45; doi:10.1149/1.2209355
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89621
Deposited By: George Porter
Deposited On:14 Sep 2018 16:06
Last Modified:14 Sep 2018 16:06

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